SHANGHAI HI SILICON TECHNOLOGY CO., LTD.
SHANGHAI HI SILICON TECHNOLOGY CO., LTD.

LiFSI: Major Process Improvements and Breakthroughs of High Market Share Domestic and Global Brands

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    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 does not solely promote a single brand’s products like factory vendors. We objectively analyze multiple high-market-share domestic and global mainstream brands and share their significant technical progress and breakthroughs to provide buyers with authentic, up-to-date and actionable market intelligence.

    For more comprehensive and valuable LiFSI market information, please contact HiSiaddi customer service.

    I. Top 5 Domestic Export Brands (Tianci Materials, New Zhuzhou Chemical, Yongtai Technology, Do-Fluoride, Ruita New Materials): Respective Technical Breakthroughs and Improvements

    (I) Tianci Materials: Breakthrough of Ten-Thousand-Ton Continuous Flow Microreactor Mass Production Process – Shortened Reaction Duration, Reduced Byproducts and Lower Production Costs

    1. Breakthrough Details The world’s first ten-thousand-ton continuous flow microreactor LiFSI industrial production line was commissioned in 2026, replacing traditional batch autoclave processes. Reaction residence time is compressed from 8 hours to 92 seconds, synthetic byproducts reduced by 67%, and per-ton production cost cut by 19.3%. Leveraging a fully closed-loop self-supply system of hydrogen fluoride and thionyl chloride precursors, metal impurities are stably controlled below 3 ppm (vs. industry standard 8 ppm), with mass production purity locked at 99.99% automotive-grade. In collaboration with universities, thermal runaway improvement for high-dosage LiFSI electrolytes has been completed with supplementary radical capture formulations. The cell thermal runaway temperature rises by 8.5°C, and high-addition ratio (10%~15%) electrolyte high-temperature gas generation rate drops by 42%.

    2. Benefits for Overseas Buyers ① Improved stability of automotive-grade high-purity LiFSI spot delivery eliminating repeated small-batch re-testing requirements; ② Self-sufficient raw materials mitigating volatility of bulk commodity prices with 12%~16% unit price discounts for annual long-term procurement; ③ Compatibility with overseas 800V high-voltage platforms and 4680 cylindrical battery high-dosage formulations cutting electrolyte formulation debugging cycles by 50%.

    (II) New Zhuzhou Chemical: Composite Lithium Salt Compounding Technology & Joint Process Optimization – Customized Electrolyte Solution Commercialization

    1. Breakthrough Details Jointly iterated LiFSI+LiDFP composite lithium salt compounding technology with Nippon Shokubai to overcome the low-temperature salt precipitation limitation of standalone LiFSI. The composite system achieves a 21% increase in ionic conductivity at -20°C and has obtained full power battery certifications from NIO, Hyundai and Kia. Crystallization purification technology is shared with Japanese partners, delivering automotive-grade products with batch purity fluctuation CV value ≤1.2%. The existing 2,400-ton production line operates at full capacity with an additional 3,000-ton line launched, optimizing impurity control from 7 ppm to 4 ppm.

    2. Benefits for Overseas Buyers Pre-compounded composite lithium salt raw materials available for direct procurement, eliminating downstream electrolyte manufacturers’ compounding processes and saving USD 700~900 per ton of electrolyte processing costs. Japanese and South Korean power battery buyers can source unified materials for passenger vehicle and energy storage scenarios from a single supplier, reducing multi-supplier inventory costs.

    (III) Yongtai Technology: Liquid-Phase Crystallization-Free New Process & Microchannel Synthesis – Improved Yield and Reduced Energy Consumption

    1. Breakthrough Details Introduced continuous flow microchannel technology from South Korea’s Enchem to launch the world’s largest 67,000-ton/year liquid LiFSI production line, eliminating solid-state crystallization purification procedures. Synthetic yield rises from 75% to 86%, production energy consumption decreases by 20% year-on-year, and per-ton production cost falls to RMB 95,000 – 15% lower than the average cost of industry solid-state processes. Metal impurities are tightly controlled at 5 ppm, with raw material qualification awarded by Tesla’s 4680 and CATL Kirin global projects. Liquid LiFSI can be directly blended into electrolytes without secondary dissolution and purification steps for clients.

    2. Benefits for Overseas Buyers Liquid products can be fed into production immediately upon arrival, reducing client investment in storage and dissolution equipment. Tiered pricing available for bulk volume procurement significantly cuts raw material costs for energy storage and entry-level power battery applications.

    (IV) Do-Fluoride: Improved Chlorosulfonic Acid Purification Refining – Reduced Byproducts and Mass Production of Ultra-High-Purity Grades

    1. Breakthrough Details Optimized temperature control and solvent systems for chlorosulfonic acid synthesis, cutting byproduct proportion from 3.2% to below 0.5%. Drawing on integrated fluorochemical industry chain advantages, heavy metal impurities in high-purity lithium battery-grade LiFSI are limited to ≤5 ppm, breaking the bottleneck of traditional processes where excessive impurities prevented compatibility with silicon anode batteries. The 6,000-ton Jiaozuo base operates at stable mass production with capacity expansion to 12,000 tons scheduled for 2026. Product hydrolysis resistance is enhanced by 35%, with moisture content increase below 100 ppm after 72 hours of open ambient storage.

    2. Benefits for Overseas Buyers Ocean shipping moisture-induced scrap rate drops from original 5.8% to 1.1%, drastically reducing cross-border cargo loss costs. Compatible with European and American high-energy-density silicon anode power battery projects to expand the range of end-product applications for clients.

    (V) Ruita New Materials: One-Step Synthesis Shortened Production Process – Upgraded Batch Stability Adapted to Blade Battery Systems

    1. Breakthrough Details Independently developed one-step direct synthesis technology eliminating two intermediate separation procedures and shortening production cycles by 30%. Batch indicator stability CV value ≤1.5%, resolving the longstanding challenge of significant batch-to-batch indicator variation in traditional multi-step processes. Custom low-acid LiFSI grades with free acid ≤10 ppm are specially tailored for BYD blade batteries and overseas lithium iron phosphate fast-charging battery electrolyte formulations.

    2. Benefits for Overseas Buyers Consistent indicators across small trial batches and mass production runs prevent battery yield declines caused by raw material batch fluctuations. Dedicated low-acid grades available for targeted procurement by lithium iron phosphate energy storage and passenger vehicle battery manufacturers, reducing formulation modification investment.

    II. Top 5 Global Foreign Brands by Market Share (Solvay, Nippon Shokubai, BASF, Soulbrain, Chunbo): Technical Breakthroughs and Improvements

    (I) Solvay (Belgium): Closed-Loop Low-Carbon Fluorochemical Process & Mass Production of Solid-State Battery Special LiFSI Grades

    1. Breakthrough Details The world’s first carbon-neutral LiFSI mass production plant was constructed in Belgium with 92% recycling efficiency of fluorine raw materials and 48% reduced production carbon emissions. Ultra-high-purity LiFSI (99.995%, impurities <1 ppm) exclusively for solid polymer batteries was developed, compatible with all-solid-state lithium polymer electrolytes. 30% local capacity expansion completed in Europe to comply with EU local power battery supply chain regulations.

    2. Benefits for Overseas Buyers EU regional procurement supports carbon tariff accounting to avoid import carbon tax expenses. Solid-state battery R&D enterprises can directly source specialized ultra-high-purity grades to shorten medium-scale solid-state electrolyte testing cycles.

    (II) Nippon Shokubai (Japan): Large-Scale Cost Reduction Process & Long-Cycle Modified Formulations – Significantly Extended Battery Cycle Life

    1. Breakthrough Details Optimized traditional fluorination large-scale production processes leveraging integrated domestic fluorine resource chains to cut per-ton raw material costs by 22%. Modified LiFSI electrolyte formulations were commercialized, boosting power battery cycle life to 1.6 times the original benchmark, lifting -20°C low-temperature driving range by 18% and shortening fast-charging duration by 12%~20%. A ten-thousand-ton production line was newly constructed in China to enable local supply for China and Japan.

    2. Benefits for Overseas Buyers For Japanese and European high-end automotive supply chain procurement, end-user electric vehicle warranty mileage is extended from 100,000 km to 160,000 km, reducing after-sales warranty costs for vehicle manufacturers. Low-temperature performance of power battery materials is substantially optimized for cold-region battery manufacturers.

    (III) BASF (Germany): Integrated Electrolyte Compounding Technology & Flame-Retardant Modified LiFSI New Products

    1. Breakthrough Details Integrated LiFSI + flame retardant additive synthesis process was established, launching flame-retardant modified LiFSI products that raise electrolyte flash point by 32°C and reduce battery thermal runaway fire risk by 60%. Special grades customized for European energy storage power station safety standards fully comply with IEC62619 energy storage safety certifications. Integrated lithium salt-electrolyte co-production enables customized pre-mixed lithium salt finished products on demand.

    2. Benefits for Overseas Buyers Energy storage battery manufacturers eliminate separate flame retardant additive procurement, simplifying raw material inventory lists. Higher compliance pass rates for energy storage products and reduced insurance premiums for energy storage power stations.

    (IV) Soulbrain (South Korea): Optimized Purification for Korean High-Voltage Batteries – Enhanced High-Voltage Aluminum Corrosion Resistance

    1. Breakthrough Details Purification processes optimized for Korean 800V high-voltage ternary batteries to improve anionic impurity control, boosting LiFSI aluminum foil corrosion inhibition capacity by 45%. No aluminum foil erosion observed after 500 cycles of high-voltage electrolyte operation. Mass production customized medium-to-high dosage grades (7%~12% additive ratio) are designated for LG Energy Solution and Samsung SDI high-voltage cylindrical batteries.

    2. Benefits for Overseas Buyers Improved raw material compatibility for Korean power battery supporting manufacturers, lifting high-voltage ternary battery production yield by 3.7% and reducing failure rates of end fast-charging vehicle models.

    (V) Chunbo (South Korea): Anhydrous Continuous Refining Process & Special Grades for Consumer Electronic Ultra-Thin Batteries

    1. Breakthrough Details Commercialized anhydrous continuous refining processes delivering free moisture ≤8 ppm, suitable for ultra-thin soft-pack lithium batteries including TWS earbuds and foldable screens. Precise control of trace impurities enables 89%+ capacity retention after 2,000 cycles of ultra-thin cells, resolving the longstanding electrolyte liquid separation pain point for ultra-thin batteries. Joint formulation development agreements signed with Southeast Asian battery manufacturers for localized technical support.

    2. Benefits for Overseas Buyers Consumer electronics battery buyers can replace costly imported lithium salts with domestic alternatives while simultaneously improving end digital product driving range and service life.

    III. General Benefits for All Buyers Brought by Cross-Industry Universal Technical Breakthroughs

    1. Cost Side: Iterative process upgrades of domestic and foreign leading manufacturers drove a 27% year-on-year decline in average LiFSI prices, delivering sustained raw material cost optimization for overseas electrolyte and battery buyers.

    2. Product Side: Comprehensive high-purity grade portfolio covering full application scenarios including consumer lithium batteries, 800V high-voltage fast-charging power batteries, long-duration energy storage and semi-solid state batteries, allowing buyers to source multiple product lines from a single supplier category.

    3. Supply Chain Side: Parallel development of domestic integrated manufacturers and overseas localized factories shortens delivery lead times for Europe, Southeast Asia and Japan/South Korea by 7–15 days, lowering capital occupation for inventory stockpiling.

    For more comprehensive and valuable LiFSI market information, please contact HiSiaddi customer service.


    References
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