LiFSI: Common Challenges Faced by Buyers During Sourcing and HiSiaddi’s Solutions

As a new-type foreign trade service provider driven by both technology commercialization and cross-border trading, HiSiaddi has established a "1+2+3+4=1" service system and can supply LiFSI sourced from multiple well-known original manufacturers. As a research and development-oriented foreign trade service provider, HiSiaddi professionally sorts out common difficulties encountered by B-end buyers sourcing LiFSI from China and proposes targeted solutions.

For more professional and in-depth analysis regarding LiFSI selection, please contact HiSiaddi customer service.

I. Power Battery Electrolyte Manufacturers

(I) Core Pain Points

Excessive moisture causing battery swelling and capacity fading; elevated acidity corroding electrodes and separators; metallic impurities triggering self-discharge; insufficient solubility hindering batching operations; fluctuating purity across batches undermining battery consistency

1. Excessive free moisture in LiFSI decomposes during battery charge-discharge cycles to generate gas, resulting in swollen cells, elevated internal pressure, drastically shortened cycle life and increased mass production scrap rates.

2. Substandard free acid content corrodes copper/aluminum current collectors and separator substrates over long-term use, triggering electrode pulverization, continuous internal resistance growth and degraded safety/range performance of power batteries.

3. Excessive heavy metal impurities including Fe, Na and Ca form micro-short circuits within electrolytes, intensifying cell self-discharge and severe static power loss, failing automotive battery standards.

4. Low solubility in low-temperature and conventional solvent systems causes local crystallization and suspended particles during batching, yielding heterogeneous electrolyte systems that impair cell wetting and electrochemical performance.

5. Deviations in purity and impurity levels across batches lead to inconsistent internal resistance and cycling performance for batteries under fixed formulation processes, complicating consistency control for vehicle battery packs.

(II) Targeted Solutions

1. Deep dehydration process to rigorously control moisture indicators, inhibit cell gas generation at the source and stabilize cell morphology with long-cycle performance.

2. Precision acid-controlled refining to limit free acid within industry thresholds, reduce electrode/separator corrosion and stabilize long-term battery internal resistance and performance.

3. Ultra-high-purity impurity removal workflow to tightly constrain all metal ion contents, effectively suppressing cell self-discharge and meeting high-reliability requirements for power batteries.

4. Optimized crystal morphology to boost dissolution rate and solubility in carbonate solvents, eliminating crystallization and suspended particles during batching for homogeneous stable electrolyte systems.

5. Full standardized production workflows locking consistent purity, moisture and impurity parameters across batches to guarantee uniform performance of power battery modules.

II. Energy Storage Battery Material Enterprises

(I) Core Pain Points

Poor thermal stability under high-temperature operating environments; excessive chloride ions accelerating shell corrosion; sharp capacity fading after long-term cycling; moisture absorption and deterioration during storage; fast performance degradation under wide-temperature alternating operating conditions

1. Energy storage batteries operate across broad temperature ranges with localized heat accumulation. Standard LiFSI features low thermal decomposition temperature; lithium salt decomposes under high temperatures to degrade electrolyte performance and trigger rapid battery capacity loss.

2. Residual chloride ions continuously corrode battery metal shells and wiring terminals, causing rust and liquid leakage over long-term operation and elevating operation & maintenance risks for energy storage power stations.

3. Insufficient comprehensive lithium salt stability damages electrode interface films after thousands of battery cycles, rising impedance and drastically reducing usable capacity of energy storage systems with compromised economic benefits.

4. Inadequate product sealing causes moisture absorption during warehousing and feeding, secondary moisture elevation and impaired quality of full batches of electrolyte.

5. Fluctuating electrochemical activity under alternating high/low temperatures destabilizes battery charge-discharge efficiency and hinders stable power output control of energy storage systems.

(II) Targeted Solutions

1. Optimized molecular thermal stability structure resisting decomposition under high temperatures, suitable for wide-temperature long-duration energy storage operation to delay capacity fading.

2. Deep removal of chloride and other corrosive impurities to mitigate erosion of metal components, prevent shell rust and liquid leakage and improve safety of energy storage equipment.

3. High-purity stable formulation facilitating dense and robust electrode interface film formation, drastically extending battery cycle life and service lifespan of energy storage facilities.

4. Vacuum moisture-proof sealed packaging isolating external water vapor to maintain stable indicators without moisture absorption during warehousing and transit.

5. Optimized wide-temperature electrochemical performance delivering stable activity under high/low temperature alternation to guarantee consistent charge-discharge efficiency and power output of energy storage batteries.

III. Consumer Electronics Battery Manufacturers (Mobile Phones, Laptops, Wearable Devices)

(I) Core Pain Points

Abnormal color affecting electrolyte appearance; micro-impurities triggering cell swelling; insufficient low-temperature conductivity causing device shutdown lag; safety hazards induced by residual harmful impurities; batch-to-batch variations increasing production quality control pressure

1. Yellowing or color inconsistency of LiFSI produces discolored electrolyte that fails incoming material acceptance standards for high-end digital products requiring colorless transparent solutions.

2. Synergistic effects of trace moisture and impurities easily induce gas generation and swelling inside thin compact small-format cells, damaging product appearance and posing safety risks.

3. Sharp drop in ionic conductivity under low temperatures reduces discharge power in winter or outdoor environments, causing device lag and unexpected shutdowns.

4. Elevated residual harmful impurities combined with confined small-cell spaces raise thermal runaway risks over long-term use, failing European and American safety certifications.

5. Inconsistent dissolution performance and impurity levels across batches create volatile battery production yield rates and intensify production line quality control burdens.

(II) Targeted Solutions

1. Decolorization refining process yielding pure white transparent LiFSI for uniform aesthetic quality of finished electrolyte, meeting raw material standards for high-end consumer electronics.

2. Extreme moisture and impurity control eliminating cell internal gas swelling hazards and improving safety and appearance integrity of small-format batteries.

3. Optimized ion conduction capacity maintaining high ionic conductivity under low temperatures for smooth device discharge and enhanced user experience in cold environments.

4. Electronic-grade strict impurity removal standards aligning all impurity indicators with European and American battery safety regulations to ensure smooth certification testing.

5. Uniform physical and chemical indicators across batches stabilizing material performance, lowering production quality control pressure and sustaining consistent mass production yield rates.

IV. Lithium Battery Additive Compound Factories (Composite Lithium Salts, Functional Electrolytes, Additive Compounding, Export Customized Electrolyte Systems)

(I) Core Pain Points

Phase separation and precipitation after compounding with other lithium salts/additives; side reactions triggered by mismatched pH values; discoloration and decomposition during high-temperature ocean shipping; fluctuating indicators disrupting compounding ratios; short shelf life of compounded electrolyte systems

1. Mismatched crystal morphology and surface polarity cause poor compatibility when compounded with LiPF₆ and various functional additives, generating crystallization, stratification and precipitation that render composite systems invalid.

2. Imbalanced raw material pH triggers side reactions with alkaline and oxidizing additives, damaging lithium salt structures and degrading overall electrochemical performance of electrolytes.

3. High-temperature confined environments during transoceanic shipping induce LiFSI decomposition and discoloration, failing appearance and performance standards of finished products and delaying delivery of high-end OEM products.

4. Deviations in purity, acidity and moisture across batches invalidate fixed compounding formulation ratios, yielding inconsistent finished product performance and higher defective rates.

5. Poor stability of compounded electrolyte systems triggers gradual decomposition during ambient-temperature storage with short shelf life, hindering long-cycle overseas warehousing and distribution.

(II) Targeted Solutions

1. Modified crystal surface properties delivering excellent compatibility with mainstream lithium salts and electrolyte additives for homogeneous stable compounded systems free from crystallization and stratification.

2. Neutral stable pH range regulation eliminating acid-base side reactions to preserve intact lithium salt structures without interference to electrochemical performance after compounding.

3. Enhanced heat and decomposition resistance to withstand high-temperature ocean shipping with unchanged color and purity, guaranteeing quality of export products.

4. Strict unified control of all indicators across batches enabling direct mass production under clients’ existing compounding formulations without repeated ratio adjustments.

5. Stabilization treatment process extending shelf life of compounded electrolytes to support multi-region overseas warehousing and distribution.

V. Cross-Border Lithium Chemical Repackaging Distributors

(I) Core Pain Points

Low-grade adulterated materials disguised as high-purity products; caking and stratification of bulk packages during static storage; sharp moisture elevation from water absorption during ocean shipping; incomplete hazardous chemical compliance documentation blocking customs clearance; lack of authoritative test reports hindering client acceptance

1. Low-cost supply sources adulterated with industrial-grade mixed salts and low-purity lithium salts falsely marketed as high-purity grades trigger mass battery performance failures among downstream users and heavy compensation claims.

2. Long-term static storage of bulk packages causes caking and component sedimentation that cannot be homogenized via simple stirring, leading to inconsistent indicators across repackaged small lots and damaged channel reputation.

3. Insufficient packaging sealing enables moisture absorption during high-temperature/humidity transoceanic shipping, resulting in excessive moisture upon arrival and unfitness for production.

4. LiFSI is classified as hazardous lithium battery chemical; missing English SDS, REACH documentation, transportation appraisal and high-purity test reports carry high risks of customs detention in Europe and America, preventing normal clearance and sales.

5. Absence of complete third-party test reports and batch traceability documentation blocks incoming quality inspections and supplier system audits for formal overseas battery manufacturers, obstructing long-term cooperation.

(II) Targeted Solutions

1. Supply authentic original high-purity products without adulteration or mixing, with truthfully labeled indicators and batch-attached authoritative certification supporting global third-party re-inspection.

2. Anti-caking and homogenization treatment for powder materials eliminating sedimentation and hard lumps in bulk packaging, delivering uniform quality across all standardized repackaged lots.

3. Vacuum nitrogen-filled moisture-proof heat-insulated packaging isolating water vapor and high temperatures throughout ocean shipping, maintaining consistent indicators between factory departure and destination arrival.

4. Full set of English compliance documentation supplied with each shipment including safety data sheets, regulatory screening records, transportation qualification certificates and performance test reports for full compliance throughout customs clearance and local sales.

5. Complete batch traceability and full-specification certification documents to satisfy incoming material inspection and supplier audit standards of overseas clients, facilitating stable long-term cooperation.

For more professional and in-depth analysis regarding LiFSI selection, please contact HiSiaddi customer service.

Lead time

The monthly inventory volume of LiFSI is 80 tons, with appropriate adjustments upwards or downwards in response to peak and off-peak seasons.

HiSiaddi safeguards the supply stability of LiFSI through the following measures:

1. Supply of one mainstream LiFSI model by 3 premium factories

(1) Performance evaluation and screening of LiFSI brand factories based on on-time delivery rate, batch pass rate, timeliness of risk alerts, and completeness of documentation to assess their supply stability.

(2) For each mainstream model or major grade of LiFSI, secure 1 primary high-quality brand manufacturer and 2 backup high-quality manufacturers.

(3) Each factory operates independent production lines in separate production zones to prevent production halts caused by major unforeseen incidents such as environmental production suspensions and power outages.

2. Technological transformation partnerships and long-term sales binding for LiFSI

Through long-term cooperation with brand manufacturers via technology commercialization and authorized distribution channels, HiSiaddi can effectively strengthen supervision over the production processes of brand manufacturers, optimize full-process traceability management, improve batch stability control, and further reinforce real-time monitoring of the supply stability of LiFSI products.

Long-term Annual Framework Supply Guarantee Agreement. HiSiaddi signs 12-month long-term agreements with leading manufacturers. The agreements specify the minimum guaranteed supply volume, maximum price hike range, and priority production scheduling rights during peak seasons. It is stipulated that manufacturers shall issue a 30-day prior written notice if production is suspended due to environmental rectification or equipment maintenance, and backup manufacturers will be activated to replenish goods accordingly.

3. 4 warehouses and 80 peak & off-peak demand forecasting

We have 4 warehouses, which are jointly operated and managed with suppliers to store hot-selling products.The four warehouses are located at Qingdao Port in North China, Ningbo Port in East China, Shenzhen Port in South China, and Zhengzhou, China’s inland logistics hub. This setup guarantees sufficient supply and timely shipment of LiFSI during peak seasons.

HiSiaddi issues a rolling demand forecast covering the subsequent three months on the 25th of each month, allowing manufacturers to reserve production capacity in accordance with the forecast. Any new urgent orders from overseas clients will be prioritized to draw on inventories or production capacity from backup manufacturers.

4. Multi-channel logistics to resolve vessel congestion and inspection delays for LiFSI sea and land shipments

Unstable logistics for LiFSI will extend delivery lead times. HiSiaddi has established alternative arrangements covering multiple freight forwarders, ports and transportation solutions:

(1) Binding of multiple professional chemical freight forwarders for LiFSI

Each product is assigned 2 to 3 freight forwarders with hazardous chemical/food transport qualifications affiliated with different shipping lines. Alternative sailing schedules can be switched to immediately in case of space shortages or customs inspections on a single shipping route.

(2) Backup transportation solutions for LiFSI

Ocean freight serves as the standard mode; air freight and rail freight are reserved as alternatives for urgent orders. Long-term agreements for temperature-controlled containers are signed for temperature-sensitive and perishable food additives to secure shipping space.

(3) Visual tracking and digital early warning for LiFSI

Freight forwarders synchronize daily updates on container loading, customs declaration, vessel loading and port arrival milestones. If customs inspection occurs, replenishment from backup inventory will be initiated immediately to shorten client waiting periods.

Full-chain digital early warning automatically monitors four categories of risks:

• Factory side: Expiring supplier environmental assessment certificates, renewal of production permits, scheduled major equipment overhauls, and notifications of price hikes for upstream raw materials;

• Inventory side: Inventory falling below safety thresholds, excessive inventory age, and batches failing quality inspection;

• Logistics side: Shipping line space shortages, strikes at destination ports, and updates to customs policies;

• Overseas side: Revisions to additive regulations and adjustments to import restriction lists in target countries.

Early warning notifications are automatically pushed to procurement and business leads, allowing backup suppliers or inventory contingency plans to be activated in advance.

LiFSI: What Qualifications & Certifications Have Major Chinese Brands Obtained? What Is Their Market Feedback?

HiSiaddi is an innovative foreign trade service provider driven by dual pillars of technology commercialization and export services. It has built a service system summarized as "1+2+3+4=1" and can supply original factory LiFSI products from multiple well-known brands.

As an R&D-enabled foreign trade enterprise, HiSiaddi does not only promote a single brand’s products like factory traders. We objectively analyze multiple competitive Chinese LiFSI brands with strong export capabilities and share their certifications and market feedback to help buyers select suppliers efficiently and reliably.

For more authentic, objective information on multiple well-known Chinese LiFSI brands, please contact HiSiaddi customer service.

I. Tianci Materials: Full Ultra-High-Purity Product Lines, Mass Certifications from Global Top-Tier Clients

Core Export Models

· TC-LiFSI-9999 (Ultra-High Purity Battery Grade, 99.99%): Moisture ≤30 ppm, free acid ≤5 ppm, metallic impurities ≤1 ppb; compatible with 800V high-voltage platforms, semi-solid/solid-state batteries.

· TC-LiFSI-999 (Standard Battery Grade, 99.9%): Moisture ≤50 ppm, free acid ≤10 ppm; suitable for high-nickel ternary batteries, fast-charging power batteries, long-duration energy storage.

· TC-LiFSI-L (Liquid Ultra-High Purity, 99.9%): 1.2 mol/L dimethyl carbonate solution, directly usable for electrolyte compounding to reduce customer purification losses.

Core Market Feedback (Verified by Overseas End Users)

1. Performance Reputation: Industry-Leading Fast-Charging, Low-Temperature & Cycle Performance

o Compatibility with Tesla 4680 large cylindrical cells: 80% charge within 10 minutes, ≥88% capacity retention at -20°C, cycle life exceeding 2,200 times – a 45% improvement over LiPF₆ systems.

o Feedback from European energy storage clients (Sonnen, Tesla Megapack): No gas generation or HF precipitation under 45°C high temperatures; energy storage system lifespan extended by 30%, operation & maintenance costs reduced by 25%.

2. Supply Reputation: Stable Delivery, 100% Long-Term Contract Fulfillment Rate

o Annual overseas supply capacity ≥20,000 tons, delivery lead time 30–45 days; achieved 100% fulfillment for long-term contracts with LG Energy Solution, SKI and Northvolt during 2025–2026 with zero supply disruptions.

o Cost Advantage: Thionyl chloride production route delivers per-ton costs CNY 20,000–30,000 lower than industry average; export quotations 8%–12% cheaper than Korean and Japanese competitors.

Authoritative Accreditations (Global Regulatory + Industry + Client Certifications)

· ✅ Global Compliance: EU REACH registration, U.S. TSCA filing, UN3480 transport certification, meeting high-purity requirements under the EU Battery Regulation.

· ✅ Top-Tier Client Certifications: Exclusive primary LiFSI supplier for Tesla globally, global strategic supplier for CATL & BYD, tier-1 supplier for LG Energy Solution & SKI.

· ✅ Industry Authority: Led the formulation of national standard GB/T for lithium battery electrolyte salt lithium bis(fluorosulfonyl)imide; awarded the Lithium Battery Material Technology Innovation Prize by the China Chemical Industry Society.

II. New Zhuhai (New Zebang): Thermally Stable Product Lines, Preferred Supplier for European Premium Vehicle OEMs

Core Export Models

· NZP-LiFSI-999H (High Thermal Stability Grade, 99.95%): Thermal decomposition temperature 220°C (industry average 180°C); compatible with high-nickel ternary batteries, 4680 cells and solid-state battery interlayers.

· NZP-LiFSI-999 (Standard Ultra-High Purity, 99.9%): Microchannel continuous synthesis with batch consistency deviation ±0.02%; suited for mid-tier European power batteries and commercial & industrial energy storage.

· NZP-LiFSI-E (Electronic Grade, 99.99%): Metallic impurities ≤5 ppb; applied in semiconductor cooling and solid-state battery prelithiation.

Core Market Feedback (Verified by Overseas End Users)

1. Performance Reputation: Outstanding High-Temperature & High-Voltage Compatibility

o Feedback from European premium automakers (BMW, Mercedes-Benz, Volkswagen): Compatible with 4.5V high-voltage cathodes, no capacity decay under 85°C cycling, resolves gas generation pain points of high-nickel batteries, passed 10,000-hour aging tests.

o Feedback from Korean & Japanese battery manufacturers (Samsung SDI, Murata): Low-temperature conductivity at -30°C is 40% higher than LiPF₆; suited for EVs in frigid Northern Europe & North America, boosting winter driving range by 20%.

2. Supply Reputation: Localized European Service & Strong Customization Capabilities

o Warehousing hubs in Europe and South Korea cut delivery lead time to 20 days; provides integrated "LiFSI + electrolyte formulation" customized services to meet differentiated client demands.

o 65% of 2025 export volume shipped to Europe; ranks as Europe’s top supplier of LiFSI for premium electric vehicles.

Authoritative Accreditations (Global Regulatory + Industry + Client Certifications)

· ✅ Global Compliance: EU REACH SVHC certification, German TÜV dual purity & safety certification, IEC 62660 battery material certification.

· ✅ Top-Tier Client Certifications: Exclusive supplier for premium vehicle models of BMW, Mercedes-Benz and Volkswagen; certified solid-state battery supplier for Samsung SDI; core supplier for Northvolt European energy storage projects.

· ✅ Industry Authority: The world’s second enterprise to realize large-scale LiFSI mass production; participated in drafting IEC international standards; awarded the Best Electrolyte Material Prize by the European Battery Alliance.

III. Do-Fluoride New Materials (Full Fluorine Chemical Chain, Fastest Export Growth): High-Voltage Optimized Grades, Benchmark for Domestic Substitution

Core Export Models

· DFD-LiFSI-999HV (High-Voltage Special Grade, 99.95%): Electrochemical window 5.2 V; compatible with 800V high-voltage platforms, premium NIO & Xpeng overseas models, large cylindrical cells.

· DFD-LiFSI-999 (Standard Battery Grade, 99.9%): Third-generation fluorosilicic acid process delivering per-ton costs 15% lower than industry average; suited for mid-tier power batteries and energy storage cells.

· DFD-LiFSI-S (Solid-State Grade, 99.99%): Ionic impurities ≤1 ppb; compatible with sulfide solid-state electrolytes, passed pilot certification for Toyota solid-state batteries.

Core Market Feedback (Verified by Overseas End Users)

1. Performance Reputation: Superior High-Voltage Fast-Charging Compatibility & Optimal Cost Performance

o Feedback from Southeast Asian & South American clients: Stable under local 40°C high-temperature environments, ≥1,800 cycle life, with only a 4% total cost increment vs LiPF₆ systems, delivering the best cost-performance ratio.

o Verification on overseas NIO & Xpeng models: 80% charge within 15 minutes, ≥85% capacity retention at -20°C, passed EU WVTA full-vehicle certification.

2. Supply Reputation: Vertically Integrated Fluorine Chemical Chain & Reliable Delivery

o Self-produced hydrofluoric acid and ammonium bifluoride; total annual capacity 40,000 tons; 2025 export volume surged 120% year-on-year, covering Southeast Asia, Europe and North America.

o Long-term contract price advantage: Orders exceeding 500 tons per year qualify for a 5%–8% unit price discount, ideal for large-scale procurement of mid-to-low tier power and energy storage batteries.

Authoritative Accreditations (Global Regulatory + Industry + Client Certifications)

· ✅ Global Compliance: EU REACH registration, U.S. UL 1973 certification, ASEAN CE certification, meeting material standards for Southeast Asian new energy subsidy policies.

· ✅ Top-Tier Client Certifications: Core supplier for overseas NIO & Xpeng models, pilot-certified solid-state battery supplier for Toyota, tier-1 supplier for Vietnam VinFast.

· ✅ Industry Authority: One of few domestic enterprises mastering full LiFSI industrial chain technology; awarded the Technological Innovation Demonstration Enterprise title by the China Fluorine Chemical Industry Association.

IV. Yongtai Technology: World’s Largest Liquid LiFSI Capacity, Export Cost-Performance Leader; Liquid Ultra-High-Purity Grades, Core Supplier for Top Battery Manufacturers

Core Export Models

· YT-LiFSI-L999 (Liquid Ultra-High Purity, 99.9%): Global 67,000 tons/year maximum liquid LiFSI capacity, delivered directly in solution form to eliminate secondary customer purification and cut material loss by 10%.

· YT-LiFSI-9995 (Ultra-High-Purity Solid, 99.95%): Moisture ≤40 ppm, metallic impurities ≤3 ppb; compatible with CATL CTP batteries and overseas long-duration energy storage.

· YT-LiFSI-998 (Energy Storage Special Grade, 99.8%): Optimized cost; suited for large-scale energy storage power stations and low-speed EVs with 5%–10% LiFSI dosage.

Core Market Feedback (Verified by Overseas End Users)

1. Performance Reputation: Outstanding Stability for Large-Scale Mass Production

o Feedback from CATL overseas factories (Germany / Hungary): Liquid LiFSI achieves batch consistency deviation ±0.01%, compatible with mass production of 21700/4680 cells and boosts production yield by 5%.

o Feedback from North American energy storage clients (NextEra Energy): ≥1,500 cycle life for energy storage systems, excellent high-temperature stability, purchase costs 10%–15% lower than Korean & Japanese suppliers.

2. Supply Reputation: Abundant Production Capacity, Long-Term Contracts with Top Battery OEMs

o Captures over 60% of global liquid LiFSI market share; 80% of capacity locked in supply contracts with CATL, 20% exported to Europe, America and Southeast Asia; stable 30-day delivery lead time with 85% capacity utilization rate.

o Cost-Performance Advantage: Liquid production process delivers per-ton costs 15% lower than solid-state routes, offering the lowest export quotations for bulk procurement.

Authoritative Accreditations (Global Regulatory + Industry + Client Certifications)

· ✅ Global Compliance: EU REACH registration, U.S. TSCA filing, Canadian CSA certification, complying with North American energy storage safety standards.

· ✅ Top-Tier Client Certifications: Global core supplier for CATL, certified supplier for BYD overseas energy storage projects, tier-1 supplier for German E.ON energy storage projects.

· ✅ Industry Authority: Global benchmark for liquid LiFSI technology; participated in drafting the industry standard for LiFSI used in energy storage battery electrolytes; awarded the Annual Best Material Supplier prize by High Energy Lithium Battery (HiEV).

V. Kangpeng Technology: Pioneer of Domestic LiFSI Production, Leading Exporter of High-End Electronic-Grade Materials; Ultra-High-Purity Electronic Grades, Preferred by High-End Korean & Japanese Clients

Core Export Models

· KP-LiFSI-9999E (Electronic Ultra-High Purity, 99.995%): Metallic impurities ≤0.1 ppb, free acid ≤3 ppm; suited for solid-state batteries, semiconductors and aerospace batteries.

· KP-LiFSI-9999 (Ultra-High-Purity Battery Grade, 99.99%): China’s earliest mass-produced ultra-high-purity LiFSI; compatible with high-nickel ternary batteries, semi-solid-state batteries and premium consumer electronics.

· KP-LiFSI-999 (Standard Ultra-High Purity, 99.9%): Moderate cost; suited for mid-tier power batteries and premium energy storage, primarily exported to Korea and Japan.

Core Market Feedback (Verified by Overseas End Users)

1. Performance Reputation: Industry-Leading Purity for Ultra-Precision Applications

o Feedback from premium Korean & Japanese battery manufacturers (Panasonic, Murata, LG Chem): Electronic-grade LiFSI delivers the world’s lowest impurity levels, suited for solid-state battery interface modification and fast-charging consumer electronics batteries with cycle life exceeding 2,500 times.

o Feedback from European aerospace clients: Thermal stability up to 230°C, stable performance at -40°C, passed aerospace-grade battery material certification.

2. Supply Reputation: High Technical Barriers, Exclusive Supply for High-End Segments

o China’s first enterprise to realize domestic LiFSI production, breaking Korean & Japanese monopolies in 2016; captures over 70% of domestic electronic-grade LiFSI market share, exported to high-end markets in Korea, Japan and Europe.

o Annual capacity 10,000 tons focused exclusively on high-end products; 45-day delivery lead time, strong customization capabilities for small-batch, high-purity orders.

Authoritative Accreditations (Global Regulatory + Industry + Client Certifications)

· ✅ Global Compliance: EU REACH registration, Japan METI certification, South Korea KC certification, meeting high-end battery material standards in Korea and Japan.

· ✅ Top-Tier Client Certifications: Certified solid-state battery supplier for Panasonic, exclusive supplier for Murata consumer electronics batteries, core supplier for high-end electrolyte production at LG Chem.

· ✅ Industry Authority: Primary drafting unit of Chinese LiFSI industry standard YS/T 1302-2019; awarded China Patent Excellence Award by the National Intellectual Property Administration; recognized as internationally advanced technology via appraisal by the China Petroleum and Chemical Industry Federation.

VI. Summary: Core Advantages of Five Major Brands & Overseas Supplier Selection Guidance

Core Differentiators (One-Sentence Overview)

· Tianci Materials: World’s largest production capacity, top-tier client endorsements, optimal cost; full-scenario compatibility, priority choice for premium power batteries & energy storage.

· New Zhuhai: Best thermal stability, comprehensive European certifications, robust customization; suited for high-nickel/solid-state/frigid-region applications, top pick for European markets.

· Do-Fluoride New Materials: Vertically integrated fluorine chemical chain, high-voltage compatibility, unbeatable cost performance; ideal for mid-to-high tier fast-charging EVs, Southeast Asian & South American markets.

· Yongtai Technology: World’s largest liquid LiFSI capacity, minimal production losses, lowest large-scale procurement costs; priority for energy storage & mid-tier power battery mass production.

· Kangpeng Technology: Pioneer of domestic LiFSI production, extreme electronic-grade purity, full Korean & Japanese certifications; best fit for solid-state batteries, consumer electronics and aerospace, optimal for small-batch high-end orders.

Overseas Buyer Supplier Selection Guidance

1. Premium Power Batteries (High-Nickel / Semi-Solid / 800V Platform): Prioritize Tianci TC-LiFSI-9999, New Zhuhai NZP-LiFSI-999H, Kangpeng KP-LiFSI-9999.

2. Mid-Tier Power Batteries & Energy Storage (Cost Performance Priority): Prioritize Do-Fluoride DFD-LiFSI-999, Yongtai YT-LiFSI-L999.

3. Premium Consumer Electronics / Solid-State Batteries / Aerospace: Prioritize Kangpeng KP-LiFSI-9999E, New Zhuhai NZP-LiFSI-E.

4. European Markets: New Zhuhai, Tianci Materials; Korean & Japanese Markets: Kangpeng Technology, Tianci Materials; Southeast Asian & South American Markets: Do-Fluoride New Materials, Yongtai Technology.

For more authentic, objective information on multiple well-known Chinese LiFSI brands, please contact HiSiaddi customer service.

LiFSI: Production Processes, Supply Stability and Key Technical Indicators of Five Major Chinese Brands

HiSiaddi is an innovative foreign trade service provider driven by dual pillars of technology commercialization and export services. It has built a service system summarized as "1+2+3+4=1" and can supply original factory LiFSI products from multiple well-known brands.

As an R&D-enabled foreign trade enterprise, HiSiaddi does not only promote a single brand’s products like factory traders. We objectively analyze multiple competitive Chinese LiFSI brands with strong export capabilities and share their production processes, supply stability and key technical indicators, alongside the impact of these core factors on buyers, to help buyers select suppliers efficiently and reliably.

For more authentic, objective information on multiple well-known Chinese LiFSI brands, please contact HiSiaddi customer service.

I. Tianci Materials: Continuous Flow Micro-Reaction Process, Stable Full-Grade Supply, Industry-Leading Ultra-High-Purity Indicators

(I) Production Process of Core Models: Third-Generation Thionyl Chloride Continuous Route, Balanced Purity & Cost

· Core Process: Three-step thionyl chloride route + continuous flow microreactor; self-matched key raw materials (thionyl chloride, anhydrous hydrogen fluoride) for a fully closed industrial chain.

· Reaction Flow: Sulfamic acid → Chlorosulfonyl imide (chlorination via thionyl chloride) → Bis(fluorosulfonyl)imide (fluorination via HF) → LiFSI (lithiation via lithium carbonate) → Multi-stage molecular distillation + supercritical extraction purification.

· Process Advantages:

o Continuous Mass Production: Single line capacity 8,000 tons/year, 3x higher efficiency than batch reactors, 23% lower energy consumption.

o Precise Impurity Control: Microreactor temperature controlled within ±0.5°C, 99.92% HF byproduct absorption rate, metallic impurities ≤1 ppb.

o Optimal Cost: 100% self-sufficiency of raw materials; 2025 solid LiFSI production cost CNY 58,000/ton, liquid LiFSI CNY 42,000/ton.

(II) Supply Stability: World’s Largest Capacity + Long-Term Contract Volume Locking, Zero Supply Disruptions

· Capacity Scale: Total capacity 30,000 tons by end-2025 (12,000 tons solid + 18,000 tons liquid), expanding to 90,000 tons by end-2026, capturing over 40% global market share.

· Overseas Layout: Dual production bases in Jiangsu and Fujian with dedicated 50,000-ton storage tanks; bonded warehouses in Europe and South Korea for 30–45 day delivery lead times.

· Delivery Performance: 100% fulfillment rate for long-term contracts with Tesla, LG Energy Solution and CATL; 12,000 tons overseas shipments in 2025 with zero delays or supply interruptions.

· Risk Resistance: Raw material inventory reserves ≥3 months, dual-circuit power & steam supply, ≥90% operating rate under extreme operating conditions.

(III) Key Technical Indicators (Core Models TC-LiFSI-9999 / 999 / L)

表格

(IV) Impacts on Downstream Buyers: Full-Scenario Compatibility, Lower Comprehensive Costs & Product Performance Upgrade

1. High-End Battery Manufacturers (High-Nickel / Semi-Solid / 800V Platform): Ultra-high-purity indicators compatible with Tesla 4680 cells and CATL Kirin batteries; 45% cycle life improvement, ≥88% capacity retention at -20°C, eliminating gas generation and thermal runaway risks.

2. Mid-Tier Battery Manufacturers (LFP / Energy Storage): Direct feeding of liquid LiFSI cuts material loss by 10% and electrolyte costs by 5%–8%, improves batch consistency and boosts production yield by 5%.

3. Procurement Cost: Long-term contract quotations 8%–12% lower than Korean & Japanese peers; tiered discounts for annual orders over 500 tons deliver significant comprehensive cost advantages.

II. New Zhuhai (Premium Market Benchmark): Fluorosulfonic Acid Route + Microchannel Continuous Process, Superior Thermal Stability, Complete European Certifications

(I) Production Process of Core Models: Fluorosulfonic Acid Route + Microchannel Reactor, Optimized for High-Temperature & High-Voltage Applications

· Core Process: Two-step fluorosulfonic acid route + microchannel continuous synthesis, chlorine-free process with superior environmental performance.

· Reaction Flow: Fluorosulfonic acid + ammonia → Bis(fluorosulfonyl)imide (HFSI) → LiFSI (lithiation via LiOH) → Multi-stage recrystallization + molecular distillation purification.

· Process Advantages:

o Outstanding Thermal Stability: Precise reaction temperature control delivers product decomposition temperature of 220°C (industry average 180°C).

o Consistent Batch Quality: Uniform mixing via microchannels with batch deviation ±0.02%, meeting strict standards of European premium automakers.

o Environmental Compliance: Byproducts are water and trace fluorides, no hydrochloric acid or chlorine emissions, fully compliant with EU REACH high environmental standards.

(II) Supply Stability: Dual China-Europe Production Bases + Customizable Capacity, 20-Day European Delivery Lead Time

· Capacity Scale: Total capacity 5,000 tons by end-2025 (3,000 tons solid + 2,000 tons liquid); Poland production base launches in 2026 adding 3,000 tons for total capacity of 8,000 tons.

· Overseas Layout: Dual bases (Jiangsu Hankang in China + Poland in Europe); local European warehousing cuts delivery lead time to 20 days.

· Delivery Performance: Exclusive supplier for premium BMW, Mercedes-Benz and Volkswagen vehicle models; 65% of 2025 shipments delivered to Europe, 98% fulfillment rate for customized orders.

· Risk Resistance: Exclusive focus on high-end market with flexible capacity matching; priority supply reserved for long-term contract clients with zero quality fluctuations driven by low-price dumping.

(III) Key Technical Indicators (Core Models NZP-LiFSI-999H / 999 / E)

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(IV) Impacts on Downstream Buyers: Top European Premium Market Choice, Optimized Performance for High-Temperature & Frigid Environments

1. European Premium Automakers (BMW / Mercedes-Benz / Volkswagen): Superior thermal stability compatible with 4.5V high-voltage cathodes, zero capacity decay under 85°C cycling, resolves gas generation pain points of high-nickel batteries.

2. Solid-State Battery Manufacturers: Electronic-grade metallic impurities ≤0.5 ppb compatible with sulfide solid-state electrolytes, passed pilot certification for Toyota solid-state batteries.

3. European Regulatory Compliance: Full TÜV/REACH/UN3480 certifications fully satisfy EU Battery Regulation requirements without secondary third-party testing.

III. Do-Fluoride New Materials (Full Fluorine Chemical Chain): Third-Generation Fluorosilicic Acid Route, High-Voltage Compatibility, Industry-Leading Cost Performance

(I) Production Process of Core Models: Fluorosilicic Acid Route + Low-Temperature Fluorination, Optimized for High-Voltage Fast Charging, Low Production Cost

· Core Process: Two-step fluorosilicic acid route + low-temperature fluorination crystallization; self-produced full fluorine chemical chain (HF, ammonium bifluoride).

· Reaction Flow: Fluorosilicic acid → Bis(fluorosulfonyl)imide (HFSI) → LiFSI (lithiation via LiF) → Low-temperature (-10°C) crystallization + vacuum drying.

· Process Advantages:

o High-Voltage Compatibility: Electrochemical window of 5.2 V, suited for 800V high-voltage platforms with industry-leading fast-charging performance.

o Ultra-Low Cost: Vertically integrated fluorine chemical chain delivers per-ton costs 15% lower than industry average; 2025 factory price CNY 52,000/ton.

o Impurity Control: Low-temperature crystallization removes heavy metals with metallic impurities ≤1 ppm, meeting automotive-grade standards.

(II) Supply Stability: Dual North & South China Production Bases, Ample Capacity, Fast Delivery to Southeast Asia

· Capacity Scale: Total capacity 8,000 tons by end-2025; Inner Mongolia base adds 12,000 tons in 2026 for total capacity of 20,000 tons, ranking third globally.

· Overseas Layout: Dual bases in Jiaozuo (Henan) and Foshan (Guangdong); bonded warehouses in Vietnam (Southeast Asia) for 25–35 day delivery lead times.

· Delivery Performance: Core supplier for overseas NIO & Xpeng models, tier-1 supplier for Vietnam VinFast; 45% of 2025 shipments exported overseas, 99% long-term contract fulfillment rate.

· Risk Resistance: 100% self-sufficiency of HF, self-owned power plants lowering energy costs, stable capacity utilization rate above 85%.

(III) Key Technical Indicators (Core Models DFD-LiFSI-999HV / 999 / S)

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(IV) Impacts on Downstream Buyers: Top Choice for High-Voltage Fast-Charging EVs, Optimal Cost Performance for Southeast Asian & South American Markets

1. High-Voltage Fast-Charging Automakers (NIO / Xpeng / VinFast): 5.2 V electrochemical window compatible with 800V platforms, 80% charge within 15 minutes, ≥85% capacity retention at -20°C, passed EU WVTA full-vehicle certification.

2. Energy Storage & Mid-Tier Power Battery Manufacturers: 10%–15% lower costs than Korean & Japanese competitors; adding 10%–20% LiFSI boosts cycle life by 20%–30% with only a 3%–5% cost increment.

3. Southeast Asian Market Compatibility: ASEAN CE certification, stable operation under local 40°C high temperatures with ≥1,800 cycle life and no high-temperature capacity decay.

IV. Yongtai Technology: Full Liquid Continuous Process, Lowest Large-Scale Production Cost, Long-Term Supply Contracts with Top Battery OEMs

(I) Production Process of Core Models: Full Liquid Continuous Route + Direct Solution Output, Minimal Material Loss & High Efficiency

· Core Process: Three-step thionyl chloride route + full liquid continuous synthesis, specialized for liquid LiFSI without solid crystallization or drying steps.

· Reaction Flow: Sulfamic acid → Chlorosulfonyl imide → Bis(fluorosulfonyl)imide → LiFSI (lithiation via lithium carbonate) → Direct dissolution in DMC solvent (1.2 mol/L) → Precision filtration.

· Process Advantages:

o Zero Secondary Purification Loss: Delivered directly in solution form eliminating customer purification steps, cutting material loss by 10% and energy consumption by 30%.

o Minimal Large-Scale Cost: Single line capacity 10,000 tons/year; liquid LiFSI production cost CNY 40,000/ton, the lowest in the industry.

o Ultra-Stable Batch Quality: Full liquid mixing delivers batch deviation ±0.01%, ideal for mass production.

(II) Supply Stability: World’s Largest Liquid LiFSI Capacity, Long-Term Binding Contracts with CATL, Stable 30-Day Delivery Lead Time

· Capacity Scale: Total capacity 20,000 tons by end-2025 (18,000 tons liquid + 2,000 tons solid); liquid LiFSI captures over 60% global market share, expanding to 67,000 tons by 2026.

· Overseas Layout: Taizhou production base (Zhejiang) with supporting 100,000-ton electrolyte production capacity, direct supply to CATL Germany & Hungary factories.

· Delivery Performance: Global core supplier for CATL with 80% of capacity locked to top-tier OEMs; 8,000 tons overseas shipments in 2025 with stable 30-day delivery lead time and 85% capacity utilization rate.

· Risk Resistance: Simplified liquid process equipment with low maintenance costs, 85%+ stable capacity utilization, rapid capacity expansion capability under extreme market conditions.

(III) Key Technical Indicators (Core Models YT-LiFSI-L999 / 9995 / 998)

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(IV) Impacts on Downstream Buyers: Top Choice for Large-Scale Energy Storage & Mid-Tier Battery Mass Production, Significant Cost Reduction

1. CATL & BYD Overseas Factories: Direct feeding of liquid LiFSI compatible with mass production of 21700/4680 cells, boosts production yield by 5% and cuts electrolyte costs by 8%.

2. Large-Scale Energy Storage Power Stations (NextEra / E.ON): Energy storage grade (99.8%) production cost CNY 38,000/ton; 5%–10% LiFSI dosage delivers ≥1,500 cycle life with 10%–15% lower procurement costs.

3. Production Efficiency: Eliminates secondary purification steps, shortens electrolyte production cycle by 20% and cuts equipment investment by 15%.

V. Kangpeng Technology (Domestic LiFSI Pioneer): High-Purity Three-Step Route, Industry-Leading Electronic-Grade Purity, Complete Korean & Japanese High-End Certifications

(I) Production Process of Core Models: High-Purity Three-Step Route + Multi-Stage Recrystallization, Extreme Impurity Control

· Core Process: Three-step chlorosulfonic acid route + multi-stage recrystallization + supercritical CO₂ extraction; China’s earliest LiFSI mass production technology, specialized for high-end electronic-grade products.

· Reaction Flow: Chlorosulfonic acid → Chlorosulfonyl imide → Bis(fluorosulfonyl)imide → LiFSI (lithiation via lithium carbonate) → 5-stage recrystallization + supercritical CO₂ extraction → High-purity powder.

· Process Advantages:

o Extreme Purity Control: Metallic impurities ≤0.1 ppb, world-leading electronic-grade purity suited for solid-state batteries and aerospace applications.

o Superior Stability: Thermal decomposition temperature 230°C, stable performance at -40°C, passed aerospace-grade battery material certification.

o High Technical Barriers: Broke Korean & Japanese monopolies via domestic LiFSI mass production in 2016; full-process patent coverage enabling exclusive supply for high-end segments.

(II) Supply Stability: Focused on Small-Batch High-End Orders, Complete Korean & Japanese Certifications, 45-Day Delivery Lead Time

· Capacity Scale: Total capacity 10,000 tons by end-2025 (solid-dominant production); Lanzhou base expands capacity to 15,000 tons in 2026, capturing over 70% domestic electronic-grade LiFSI market share.

· Overseas Layout: Shanghai R&D center + Zhejiang production base; bonded warehouses in Korea & Japan exclusively supplying high-end orders for Panasonic, Murata and LG Chem.

· Delivery Performance: Exclusive supplier for Panasonic solid-state batteries and Murata consumer electronics batteries; 70% of 2025 shipments delivered to Korea & Japan, 99% fulfillment rate for customized small-batch orders.

· Risk Resistance: Exclusive focus on high-end market with no low-end capacity expansion, consistent stable quality, priority supply reserved for long-term contract clients.

(III) Key Technical Indicators (Core Models KP-LiFSI-9999E / 9999 / 999)

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(IV) Impacts on Downstream Buyers: Top Choice for Solid-State Batteries, Consumer Electronics & Aerospace, Uncompromising Quality Assurance

1. Solid-State Battery Manufacturers (Panasonic / Toyota): Electronic-grade metallic impurities ≤0.1 ppb compatible with solid electrolyte interface modification, delivering ≥2,500 cycle life.

2. Premium Consumer Electronics (Murata / LG Chem): 99.99% purity suited for fast-charging TWS earbud & drone batteries, 90% charge within 10 minutes with ≥2,000 cycle life.

3. Aerospace Clients: 230°C thermal stability and stable performance at -40°C, passed aerospace-grade certification to meet extreme operating environment requirements.

VI. Summary: Core Differentiators (Process / Supply / Indicators) & Supplier Selection Guidance

Core Differentiators (Production Process, Supply Stability, Key Indicators)

· Tianci Materials: Continuous flow micro-reaction + fully self-sufficient industrial chain; largest global capacity, lowest production costs, balanced technical indicators for full-scenario applications.

· New Zhuhai: Fluorosulfonic acid route + microchannel synthesis; industry-leading thermal stability, comprehensive European certifications, optimal for high-temperature/solid-state/frigid-region high-end applications.

· Do-Fluoride New Materials: Fluorosilicic acid route + low-temperature fluorination; high-voltage compatibility, top cost performance, preferred for Southeast Asian markets and high-voltage fast-charging EVs.

· Yongtai Technology: Full liquid continuous synthesis; world’s largest liquid LiFSI capacity, minimal material losses, lowest large-scale procurement costs, ideal for energy storage and mid-tier battery mass production.

· Kangpeng Technology: Multi-stage recrystallization + supercritical extraction; extreme electronic-grade purity, full Korean & Japanese certifications, top pick for solid-state batteries, consumer electronics and aerospace small-batch high-end orders.

Downstream Buyer Supplier Selection Guidance

· Premium Power Batteries (High-Nickel / Semi-Solid / 800V Platform): Tianci 9999, New Zhuhai 999H, Kangpeng 9999.

· Mid-Tier Power Batteries & Energy Storage (Cost Performance Priority): Do-Fluoride 999, Yongtai L999.

· Premium Consumer Electronics / Solid-State Batteries / Aerospace: Kangpeng 9999E, New Zhuhai E.

· European Markets: New Zhuhai, Tianci Materials; Korean & Japanese Markets: Kangpeng Technology, Tianci Materials; Southeast Asian & South American Markets: Do-Fluoride New Materials, Yongtai Technology.

For more authentic, objective information on multiple well-known Chinese LiFSI brands, please contact HiSiaddi customer service.

LiFSI: Key Factors for Buyers to Consider During Sourcing Based on HiSiaddi’s Market Expertise

As a new-type foreign trade service provider driven by both technology commercialization and cross-border trading, HiSiaddi has established a "1+2+3+4=1" service system and can supply LiFSI sourced from multiple well-known original manufacturers. As a research and development-oriented foreign trade service provider, HiSiaddi provides professional analysis of critical considerations and key indicators for LiFSI procurement to ease buyers’ sourcing concerns.

For more professional and in-depth analysis regarding LiFSI selection, please contact HiSiaddi customer service.

I. Core Considerations for Sourcing LiFSI from China

LiFSI is a high-end fluorinated lithium salt fine electronic chemical with strong hygroscopicity, classified as a hazardous solid material. It is categorized as corrosive solid and highly moisture-sensitive chemical in most countries worldwide, subject to strict regulations covering hazardous goods, REACH, fluorinated substance control, lithium battery electronic material access, and trace impurity standards. Its core performance is determined by key metrics including main purity content, moisture, free acid, anionic impurities, metal ions, sulfate radicals, fluoride ions, insoluble matter, thermal stability and electrochemical stability. Extremely low levels of moisture and trace metal/acidic impurities will directly cause severe battery self-discharge, accelerated cycle degradation, electrode corrosion and elevated safety risks. Coupled with varying hazardous goods transportation rules, electronic material certifications and fluorinated chemical filing requirements across jurisdictions, buyers cannot simply compare unit prices. Comprehensive evaluation must be conducted in combination with electrolyte formulations, battery operating conditions, production environments and local regulatory frameworks.

(I) Compliance Qualification Verification: Align with Global Regulations to Ensure Customs Clearance, Production and Industry Access

LiFSI bears triple attributes: corrosive hazardous solid, fluorinated fine chemical and core lithium battery electronic raw material. Its regulatory scope covers hazardous chemical registration, REACH & SVHC screening, fluorinated substance management, electronic hazardous substance restrictions, and special standards for vehicle/energy storage battery materials. Complete compliance documents are fundamental prerequisites for cross-border circulation and legal production.

1. Specialized Testing and Certifications Matched with End Applications For general-grade LiFSI used in consumer digital batteries and small capacitors exported to the EU, North America, Japan, South Korea and other mainstream markets, suppliers shall provide REACH registration documents, full SVHC candidate list screening reports, as well as routine anionic content, acidity and residual solvent test data. Power battery-grade LiFSI for new energy vehicle lithium-ion batteries shall additionally deliver automotive electronic material access certificates and halogen-free test reports with ultra-low metal ion analysis to meet stringent automotive safety standards. Ultra-high-purity grade for large-scale energy storage, ultra-high-rate fast-charging and long-cycle batteries shall provide full-element trace impurity analysis, long-term electrochemical cycling and comprehensive thermal stability test reports. Certain countries impose special filing requirements on fluorinated lithium salts, requiring advance coordination to complete local fluorinated chemical registration.

2. Full Set of Documents for Cross-border Transportation and Customs Clearance LiFSI is corrosive and highly hygroscopic, classified as corrosive hazardous solid in most regions globally. Suppliers shall uniformly provide multi-lingual Safety Data Sheets (SDS), chemical hazard classification appraisal reports, together with corresponding UN numbers, hazardous goods packaging certificates and maritime dangerous goods declaration documents. Standard customs clearance materials include certificates of origin, batch-by-batch full-specification Certificate of Analysis (COA) and production traceability forms. For power battery and ultra-high-purity energy storage grade orders, supplementary test reports including Ion Chromatography (IC), Inductively Coupled Plasma (ICP) elemental analysis, Thermogravimetry (TG) and electrochemical evaluation shall be attached.

3. Supplier Qualification Screening Prioritize original manufacturers with complete synthesis processes, multi-stage purification, deep impurity removal, anhydrous dust-free mass production capabilities, and proven cooperation experience with leading overseas battery clients. Focus on verifying hazardous chemical production qualifications, dust-free workshop certifications and the authority/traceability of third-party test reports. Insufficient main purity, excessive moisture/free acid, or over-limit metal/corrosive anionic impurities will directly lead to degraded electrolyte performance, sharp battery cycle capacity fading, electrode perforation by corrosion, cell swelling and fire hazards. Non-compliant indicators may also result in customs detention and trade claims. Conduct full qualification reviews, electrolyte compatibility lab trials and third-party full-specification re-inspection prior to formal cooperation.

(II) Raw Materials and Production Processes: Secure Synthesis & Crystallization Purification Procedures to Stabilize Purity and Electrochemical Performance

LiFSI’s main content, impurity levels, hydrolysis resistance, electrochemical performance and storage stability are fundamentally determined by upstream raw material grades, synthesis reaction control, multi-stage refining, deep ion removal, low-temperature crystallization and high-vacuum drying procedures. These procedures also serve as the core criteria for grading LiFSI for different lithium battery applications.

1. Upstream Raw Material Inspection High-quality LiFSI adopts ultra-high-purity fluorine sources, lithium sources and sulfonyl raw materials for targeted synthesis in fully sealed anhydrous systems, generating fewer byproducts and low baseline impurities in crude products. Subsequent multi-stage solvent refining, ion exchange for deep removal of trace metal/corrosive anions, low-temperature controlled crystallization and high-vacuum deep drying thoroughly eliminate moisture, free acid, residual solvents and various inorganic impurities. The finished product features high main purity, ultra-low moisture, weak acidity, controllable ionic impurities, strong hydrolysis resistance, excellent compatibility with all mainstream electrolyte systems, stable performance under high-temperature and long-cycle operating conditions, and resistance to moisture absorption and deterioration under long-term sealed storage. Low-grade LiFSI uses industrial-grade raw materials with simplified refining and drying workflows, resulting in low purity, excessive moisture/acidity, over-limit metal ions, easy moisture absorption and caking, and rapid degradation of electrochemical performance. Such products cannot be applied in high-reliability scenarios including power batteries and energy storage cells. Buyers sourcing high-grade LiFSI may request raw material purity certificates from suppliers.

2. Confirmation of Core Production Processes Mainstream technical workflow: Anhydrous pretreatment of high-purity raw materials → Synthesis reaction in sealed systems → Preliminary impurity removal from crude liquid → Multi-stage solvent extraction and refining → Deep removal of metal ions and corrosive anions via ion exchange → Low-temperature controlled crystallization separation → Gradient high-vacuum drying → Sieving under inert nitrogen protection → Sealed packaging and warehousing.

· General consumer digital grade: Standard synthesis plus two-stage refining process with cost-performance advantages, suitable for mobile phones, wireless earbuds, power banks and other consumer batteries as well as ordinary capacitors.

· Dedicated power battery grade: Three-stage refining and deep impurity removal with strict control of heavy metals and halogen ions, designed for automotive power lithium-ion batteries.

· Ultra-high-purity energy storage / fast-charging grade: Full-process anhydrous dust-free production, extreme dehydration and deacidification, limit-controlled trace impurities, tailored for large-scale energy storage, ultra-high-rate fast charging and long-lifespan batteries. Formal production lines fully isolate water vapor, air and cross-contamination. High-end lithium battery grades are manufactured in independent anhydrous dust-free workshops with dedicated pipelines to prevent low-grade products from being falsely supplied as high-purity lithium battery-grade materials.

1. Quality Control and Production Capacity Evaluation LiFSI is produced via a hybrid batch and continuous fine chemical process. General-grade products maintain stable inventory, while customized ultra-high-purity grades are scheduled against orders. Request multi-batch COAs, full-element ICP analysis, ion chromatography, Karl Fischer moisture titration, acidimetry and electrochemical cycling datasets. Focus on monitoring fluctuation ranges of core indicators: LiFSI main content, moisture, free acid, metal ions (K, Na, Ca, Mg, etc.), chloride ions, sulfate radicals, fluoride ions, water-insoluble matter and thermal decomposition temperature. For long-term partnerships, lock fixed raw material sources, production processes and testing standards to ensure consistent electrolyte compatibility and battery cycling performance across batches. Prioritize manufacturers with independent synthesis and full-process purification capabilities. Products made from outsourced crude materials via simple recrystallization and repackaging are prone to excessive impurities, moisture absorption and poor stability. Also request stability data under high/low temperature, long-term sealed storage and high-humidity environments to accommodate ocean shipping and global warehousing conditions.

(III) Grade, Specification and Formulation Matching: Model Selection Based on Battery Scenarios to Avoid Parameter Mismatch

Commercial LiFSI is categorized primarily by purity grade, impurity control thresholds and metal ion limits. Incorrect model selection will trigger severe failures including reduced electrolyte conductivity, damaged SEI films, intensified battery self-discharge, drastically shortened cycle life and electrode corrosion. Precise matching with battery type, electrolyte formulation and production environment is mandatory.

1. Classification by Application Grade

· General consumer digital battery grade: Meets basic requirements for small consumer batteries and ordinary capacitors.

· Dedicated power battery grade: Strict control of halogen and heavy metal ions for automotive power lithium-ion batteries.

· Ultra-high-purity energy storage / fast-charging grade: Limit-controlled full trace impurities for large-scale energy storage, ultra-high-rate and long-cycle batteries. Grades shall not be substituted interchangeably.

1. Formulation and Application Adaptability LiFSI exists as crystalline powder with regular and ultra-fine particle size options:

· Regular particle size delivers moderate dissolution speed, suitable for standard electrolyte preparation.

· Ultra-fine particle size dissolves faster, matching high-solid-content and rapid batching processes. Select particle size specifications based on internal batching equipment and production workflows.

1. Core Indicator Contract Clauses Purchase contracts must clearly specify nominal values and allowable deviations for key indicators: LiFSI main content, moisture, free acid, individual metal ions, chloride ions, sulfate radicals and water-insoluble matter. These metrics serve as core standards for incoming inspection, formulation compatibility and cost accounting.

2. Packaging and Minimum Order Quantity Requirements As a highly hygroscopic corrosive hazardous solid, LiFSI adopts dual-layer protection: inner vacuum aluminum foil bags and corrosion-resistant sealed drums. High-purity ultra-high grades are additionally filled with nitrogen inside drums to isolate water vapor and air. Industry minimum order units are kilograms and metric tons. Confirm minimum order quantities and production lead times in advance for customized ultra-high-purity grades. Mandatory small-batch verification prior to bulk orders, including dissolution testing, electrolyte compatibility, miniature battery cycling and high-temperature storage tests.

(IV) Commercial Terms and Full-Link Cost Accounting: Comprehensive Total Cost Calculation Accounting for Corrosive Hazardous Chemical Attributes

LiFSI is a high-value lithium battery hazardous chemical with strong hygroscopicity and corrosivity. Additional costs including corrosion-proof anhydrous packaging, hazardous chemical warehousing, special transportation and cargo insurance exceed those of ordinary chemicals. Price comparison cannot rely solely on unit price; comprehensive total usage cost shall be calculated combining purity, impurity content, additive dosage ratio, battery production yield, cycle life and production loss.

1. Quotation Modes

· FOB China Port: Quotation covers product cost, anhydrous corrosion-proof hazardous packaging, domestic hazardous chemical warehousing, commodity inspection and dangerous goods declaration fees. International hazardous goods transportation, insurance and destination port customs clearance are borne by buyers. Ideal for large electrolyte groups and leading battery manufacturers with annual bulk procurement for optimal overall cost.

· CIF Destination Port: Quotation includes full ocean dangerous goods freight, high-value cargo insurance, port charges, documentation and special hazardous chemical handling fees. Suppliers coordinate the entire logistics chain for streamlined operations, suitable for first-time cooperation, small-batch procurement and global lithium chemical distributors. Suppliers can provide volume tiered pricing and annual long-term agreements to stabilize long-term supply prices and lead times via scaled production capacity.

1. Payment Terms, Lead Times and Dispute Resolution Clauses International trade mainly adopts T/T and irrevocable Letter of Credit settlement. General grades are in stock with short lead times; power battery and ultra-high-purity energy storage grades require extended production cycles due to multi-round deep impurity removal, anhydrous drying and dust-free filling procedures. Contracts shall define dispute judgment criteria for non-compliance issues including substandard main purity, excessive moisture/free acid, over-limit metal/anionic impurities, abnormal dissolution, degraded battery performance after compatibility testing and misrepresented product grades. Specify internationally recognized third-party re-inspection institutions, re-testing workflows, return & exchange rules and compensation terms. Clarify that minor caking under normal sealed storage and transportation is a physical phenomenon without impact on dissolution performance to divide liabilities clearly between both parties.

2. Minimum Order Quantity and Warehousing Agreements Standard minimum order units are kilograms and metric tons; high-purity lithium battery grades shall not be split from original packaging. Mandatory storage requirements: anhydrous, cool, ventilated and constant-temperature sealed environment with temperature controlled between 5–25°C and strictly low ambient relative humidity. Forbid storage under humid conditions, open-air stacking, or contact with acids, alkalis and oxidants. Store exclusively in dedicated hazardous chemical warehouses for corrosive solids with separate zoning. Agree on free domestic warehousing cycles and prohibit prolonged cargo detention at high-temperature/humidity ports.

(V) Packaging, Storage, Transportation and Logistics Control: Comply with Standards for Corrosive Hygroscopic Hazardous Solids – Moisture Proof, Sealed, Anti-Corrosion and Temperature Controlled

Core risks of LiFSI: Hydrolysis upon moisture exposure, deterioration via contact with water vapor, packaging rupture causing corrosive leakage and accelerated decomposition under high temperatures. Full compliance with IMDG, IATA and local corrosive hazardous solid storage & transportation regulations with core control principles: full dryness, nitrogen sealing, temperature control, anti-breakage and isolation from incompatible materials.

1. Packaging Standards Inner layer: Thickened aluminum foil vacuum sealing, with additional nitrogen filling for high-purity grades. Middle layer: Corrosion-resistant sealed plastic drums or galvanized hazardous goods drums with double-locked lids to prevent air leakage and powder spillage. Outer layer: Reinforced shockproof outer cartons. Drums and outer cartons shall be printed with standardized hazard warning labels indicating corrosive property, high hygroscopicity, sealed storage and moisture isolation. All packaging undergoes factory pre-shipment testing for sealing, drop resistance, leakage prevention and moisture resistance.

2. Transportation and Environmental Control Ocean shipping adopts dedicated dangerous goods holds with constant temperature maintained at 5–25°C and dry cabin conditions, avoiding equatorial high-temperature/humidity zones. Air freight requires special declaration per corrosive hazardous solid regulations; ordinary express consignment is prohibited. Only engage logistics providers with formal corrosive hazardous chemical qualifications, purchase full-value cargo insurance for full shipments and implement end-to-end logistics tracking. Transit warehouses shall be dedicated low-humidity hazardous chemical storage zones with separate storage, no co-location with water, acids, alkalis or oxidants.

3. On-site Usage and Storage Reminders Transfer cargo to low-humidity hazardous chemical warehouses immediately upon port arrival while maintaining intact sealed packaging. Sampling, feeding and batching operations shall be conducted in anhydrous low-humidity ventilated explosion-proof environments with anti-corrosion and dust-proof personal protective equipment. Re-seal and refill nitrogen immediately after opening packaging to maximize isolation from air and water vapor. Separate storage and usage for different grades and particle sizes with complete inbound/outbound inventory records.

(VI) Technical Support and After-Sales Service: Focus on Electrolyte Compatibility & Battery Performance to Resolve Conductivity, Cycle, Corrosion and Gas Generation Issues

LiFSI purity, moisture, acid value and various ionic impurities directly determine core electrolyte and battery metrics including ionic conductivity, interfacial stability, cycling performance, high-temperature storage and electrode corrosion. Optimal adaptation solutions vary significantly across electrolyte/battery systems and production process conditions. Combined with global hazardous chemical, electronic material regulations, full-process technical service is indispensable.

1. Formulation and Process Support Suppliers provide samples, complete technical manuals, full-specification test reports, electrolyte compatibility schemes and battery cycle/high-temperature storage test datasets. Recommend optimal additive dosage, feeding sequences and workshop humidity control standards tailored to clients’ electrolyte formulations, battery types and production ambient humidity. Deliver targeted solutions for common challenges including insufficient conductivity, rapid cycle fading, cell gas generation, electrode corrosion and batching caking. Simultaneously interpret target-country hazardous chemical regulations, REACH, fluorinated substance control and lithium battery material access rules.

2. Inbound Re-inspection Coordination Conduct sampling in accordance with corrosive hazardous solid sampling standards. Clients may self-test basic indicators including appearance, particle size and solubility, or commission international third-party institutions to re-inspect core metrics: main purity, moisture, free acid, metal ions and various anionic impurities. Process non-compliant shipments per contractual terms.

3. Documentation Support and Regulatory Interpretation Provide multi-lingual SDS, UN/hazardous goods packaging documentation, full-specification test reports and certificates of origin upon request. Assist clients with local hazardous chemical filing, fluorinated chemical registration and lithium battery raw material access audits. Timely update global regulatory changes governing lithium salts, corrosive hazardous chemicals and fluorinated fine chemicals.

II. Core Indicators for LiFSI Sourcing by Application Scenario

Five mainstream global application segments are defined below, with clear control priorities specified for each category: consumer digital batteries & ordinary capacitors, new energy power batteries, large-scale energy storage & ultra-high-rate fast-charging batteries, electrolyte R&D & laboratory reagents, and cross-border lithium chemical distributors.

(I) Buyers of Consumer Digital Batteries & Ordinary Capacitors

Core priorities: Stable main purity, compliant moisture & free acid levels, good solubility, cost-effectiveness and low moisture absorption during storage & transportation

1. Consistent LiFSI main content across batches to guarantee baseline electrolyte ionic conductivity

2. Moisture and free acid controlled within standard limits to prevent gradual electrolyte decomposition and mild gas generation

3. Compliant routine anionic impurities without disrupting fundamental interfacial performance

4. Particle size and solubility enabling rapid dissolution without obvious insoluble residues

5. Storage stability resisting caking and moisture-induced deterioration under sealed storage

6. Thermal stability without decomposition under standard production and operating temperatures

(II) New Energy Power Battery Buyers

Core priorities: High purity, ultra-low metal ions, low halogen ions, low acidity and robust electrochemical stability

1. Ultra-high main purity with exceptional batch consistency

2. Strict control of K, Na, Ca, Mg, Fe and other metal ions to prevent micro-short circuits and aggravated self-discharge

3. Tight limits on corrosive anions including chloride and sulfate radicals to avoid electrode corrosion

4. Ultra-low moisture and free acid to suppress electrolyte decomposition and cell swelling

5. Total halogen content compliant with mandatory halogen-free standards for automotive electronics

6. Slow capacity fading and stable electrode interfaces under high-temperature cycling conditions

(III) Large-Scale Energy Storage & Ultra-High-Rate Fast-Charging Battery Buyers

Core priorities: Limit-controlled full trace impurities, extremely low moisture & free acid, hydrolysis resistance, stable long-cycle performance and minimal gas generation

1. Full-element trace metal ion limit control for decade-long cycle energy storage operating conditions

2. Industry-leading standards for moisture and free acid to avoid decomposition and gas generation during long-term operation

3. Near-zero content of all corrosive anions and residual components

4. Strong hydrolysis resistance with undegraded performance under high-humidity batching and long-term storage

5. Wide electrochemical window and superior rate performance with controllable temperature rise under ultra-high charge/discharge rates

6. Stable physical and electrochemical performance across broad temperature ranges

(IV) Electrolyte R&D & Laboratory Reagent Buyers

Core priorities: Precise indicators, complete full-component datasets, traceability of all impurities and stable physical & chemical properties

1. Accurate main content, density and particle size for quantitative formulation experiments

2. Complete and traceable ICP full-element analysis and ion chromatography reports

3. Stable moisture and free acid values to ensure experimental repeatability

4. Clear qualitative and quantitative data for water-insoluble matter and residual solvents to support formulation research

5. Comprehensive thermal decomposition and hydrolysis resistance datasets to support simulated operating condition testing

(V) Cross-Border Lithium Chemical Distributor Buyers

Core priorities: Moisture and corrosion resistance during logistics, intact sealed packaging, complete hazardous chemical & compliance documentation and broad compatibility

1. Logistics stability with unchanged indicators free from moisture absorption and deterioration after long-distance ocean shipping and multi-country warehousing

2. Perfect vacuum nitrogen-filled packaging without powder leakage, corrosion or moisture damage

3. Anti-caking performance with only minor physical caking under standard logistics conditions without dissolution impairment

4. Baseline indicators (main purity, moisture, impurities) meeting corresponding grade standards

5. Complete document package including SDS, UN/hazardous goods packaging materials, test reports and certificates of origin to facilitate customs clearance and client audits across multiple jurisdictions

For more professional and in-depth analysis regarding LiFSI selection, please contact HiSiaddi customer service.