HiSiaddi is an innovative foreign trade service provider driven by both technology commercialization and export business. We have established a service system framed as "1+2+3+4=1" and can supply lithium iodide sourced from multiple well-known original manufacturers. As a foreign trader with independent R&D capabilities, HiSiaddi has repeatedly resolved customized lithium iodide demands for clients through technological cooperation with manufacturers and precise market demand insights. Below is a case demonstrating how we delivered a tailored lithium iodide solution.
Please contact HiSiaddi customer service if you require further customized product solutions.
The client is a solid-state battery startup based in Berlin, Germany, focusing on sulfide solid electrolyte R&D for high-end consumer electronics and medical implant devices. Its products have passed ISO 13485 and USP 87 biocompatibility tests, and the core R&D team graduated from Technical University of Munich, marking it as a technology-driven mid-to-high-end European and American client. The company purchases approximately 120 kg of anhydrous lithium iodide (LiI) annually for solid electrolyte powder synthesis, with strict specifications: purity ≥99.9999% (6N), water content ≤10 ppm, sodium ion ≤0.3 ppm, customized particle size distribution (D50=15±2 μm), and vacuum packaging with oxygen-free light-proof aluminum foil. The client also requires batch traceability, CNAS-certified Certificates of Analysis (COA), and process parameter reports. Previously reliant on Japanese imports, the client encountered multiple bottlenecks during its first attempt at customized manufacturing in China.
The client demanded 6N-grade (99.9999%) anhydrous lithium iodide, with total metallic impurities (Na, K, Ca, Mg) ≤1 ppm and sodium ion capped at 0.3 ppm, alongside water content ≤10 ppm. Conventional industrial-grade lithium iodide produced domestically only reaches 3N–4N, while mainstream battery-grade material tops out at 5N. Mass production of 6N-grade lithium iodide presents extremely high technical barriers, requiring high-purity hydroiodic acid raw materials, anhydrous and oxygen-free synthesis environments, and multi-stage purification processes. Most manufacturers can only deliver 5N-grade products and fail to meet the specifications.
Lithium iodide readily absorbs moisture to form lithium iodide trihydrate (LiI·3H₂O). To remove crystal water without oxidation and discoloration, high vacuum (-0.1 MPa) dehydration above 120°C with full nitrogen blanketing is mandatory. Additionally, the client required a narrow particle size distribution of D50=15±2 μm, which calls for customized crystallization and pulverization processes. Ordinary manufacturers cannot simultaneously satisfy the dual non-standard requirements of anhydrous state and targeted particle size.
The client’s annual demand of 120 kg is split into six batches of 20 kg each, qualifying as a small-batch highly customized order. Large manufacturers are unwilling to adjust production lines for such volumes, while small manufacturers lack sufficient technical capacity. Moreover, solid-state batteries impose stringent consistency standards on raw material batches, with impurity, moisture and particle size fluctuations limited to ±5%. Most domestic suppliers fail to deliver stable batch-to-batch performance.
Lithium iodide with purity ≥99.99% falls under controlled dual-use items, requiring a dual-use item export license. The client also requested REACH registration documents, CNAS-certified COAs, full process parameter records, and batch traceability reports. Most ordinary manufacturers lack complete compliance systems and cannot provide the full set of technical documentation.
The client contacted seven domestic manufacturers in sequence, yet all rejected the order due to unmet purity standards, inability to customize particle sizes, refusal to accept small-batch orders, or incomplete supporting documents. Stalled by the customization deadlock, the client entrusted HiSiaddi with full authority to resolve the issue.
Leveraging our network of specialty lithium salt resources, HiSiaddi screened a leading factory equipped with mature 6N-grade production technology, flexible production lines and full export qualifications. We formed a dedicated cross-functional team covering R&D, production coordination, compliance documentation and quality control, completing custom development and sample delivery within 15 days, and launching mass production in 30 days.
Targeted Supplier Screening: We ruled out general lithium salt producers and selected Shandong Boyuan, China’s leading manufacturer of high-purity lithium iodide with proven 6N-grade production technology. The factory adopts a synthesis route of hydroiodic acid neutralization, anhydrous ethanol precipitation purification and high-vacuum dehydration, enabling stable output of 6N-grade material with ppb-level impurity control. It also operates flexible small-batch production lines capable of processing 20 kg per batch, supported by dual production bases to guarantee delivery timelines. Custom Production Line Modifications: We coordinated the factory to deploy a dedicated fully enclosed nitrogen-filled oxygen-free production line to eliminate cross-contamination. Crystallization temperature and stirring speed were optimized to precisely lock D50 at 15±2 μm, while enhanced high-vacuum dehydration reduced water content to ≤8 ppm, exceeding the client’s requirement.
Ultimate Raw Material Purification: We sourced high-purity hydroiodic acid (≥99.99%) from Chile’s SQM and battery-grade monohydrate lithium hydroxide, restricting raw material impurities to ≤0.1 ppm to control sodium ion contamination at the source. Multi-Stage Impurity Removal: Anhydrous ethanol precipitation eliminates metallic ions including Cu²⁺, Al³⁺ and Mg²⁺; ion exchange resin deep stripping reduces sodium ion content to ≤0.2 ppm; high-vacuum distillation removes free and crystal water to lower moisture to ≤8 ppm. Full-Process Quality Control: Three rounds of testing are implemented for every batch: raw material inspection, in-process intermediate testing and finished product final inspection. ICP-MS measures metallic impurities, Karl Fischer titration tests water content, and laser particle size analyzers characterize particle distribution. A CNAS-accredited COA is issued with fully traceable test data.
Custom Packaging Solution: Oxygen-free light-proof aluminum foil vacuum bags filled with nitrogen serve as primary packaging (2 kg per bag, matching laboratory usage specifications), housed within moisture-proof hard cartons. Each bag is labeled with batch number, purity, water content, particle size and production date, complying with EU storage standards for moisture and light resistance. End-to-End Batch Traceability: We provide raw material procurement records, production parameter reports, test certificates and packaging logs, enabling full traceability from raw material input to finished product delivery to support the client’s internal audits and EU regulatory inspections.
Dual-Use Item Export License Application: As 6N-grade lithium iodide is listed as a controlled dual-use item, HiSiaddi assisted the factory in applying to the Ministry of Commerce for an export license by submitting end-user certificates, non-military end-use declarations and technical specification sheets. Approval was secured within 7 days to cover the client’s full-year order. REACH Registration & Supporting Documents: We commissioned an EU REACH Only Representative (OR) to complete registration, supplying bilingual 16-section GHS-compliant SDS, REACH registration confirmation letters and certificates of origin. The complete document package meets EU customs clearance and audit criteria.
HiSiaddi coordinated expedited production of a 5 kg sample (2.5 kg × 2 bags) accompanied by COA, process reports and traceability documentation. Client laboratory testing yielded the following results: purity 99.99992%, water content 7.8 ppm, sodium ion 0.18 ppm, D50=14.8 μm. All indicators surpassed the client’s requirements, with crystal flowability and electrolyte synthesis compatibility fully validated.
The client placed an initial 20 kg trial order. HiSiaddi coordinated production scheduling, quality control, custom packaging and customs clearance, completing manufacturing and shipment within 30 days. Upon port arrival, 100% of the cargo passed the client’s incoming inspection. Solid electrolyte synthesis tests demonstrated stable interfacial impedance and a 15% improvement in cycle life, fully replacing the client’s prior Japanese imports.
Following successful trial validation, the client awarded HiSiaddi its full annual 120 kg lithium iodide order, signing a long-term customized supply framework agreement specifying six annual batches of 20 kg each, fixed technical parameters and quarterly technical review meetings. The client further entrusted HiSiaddi with customized sourcing of other specialty lithium salts including lithium sulfide and lithium chloride, establishing a stable long-term high-end supply chain partnership.
The client’s Chief Technology Officer stated: “Our customized 6N lithium iodide requirements required a 3-month lead time with Japanese suppliers at exorbitant pricing, while seven domestic manufacturers we contacted all turned down the project, putting our R&D roadmap at risk of stagnation. HiSiaddi not only identified a factory capable of stable 6N-grade production but also delivered samples in 15 days and mass batches within 30 days, with impurity, moisture and particle size metrics all exceeding our targets. The complete set of compliance documentation eliminated all administrative hurdles, enabling us to break Japanese supplier monopolies and slash procurement costs. HiSiaddi is a truly professional partner with deep expertise in high-end lithium battery material customization.”
1. Thorough Demand Dissection: We unpacked six core non-standard requirements – 6N ultra-high purity, ultra-low impurities, anhydrous material, targeted particle size, small-batch production and full high-end compliance – to precisely align technical capacity and production resources.
2. Premium Resource Integration: We identified a top-tier manufacturer with mature 6N technology, flexible production lines and full export qualifications, resolving three core pain points: technical feasibility, willingness to accept small orders and consistent stable output.
3. Deep Technical R&D: End-to-end customization covering raw material screening, multi-stage purification, dehydration and particle size control enabled stable mass production of 6N-grade lithium iodide with strict impurity and moisture limits.
4. Closed-Loop Full-Service Ecosystem: Our one-stop solution spans technical liaison, sample development, production quality control, custom packaging, compliance documentation and logistics delivery, resolving all client pain points holistically.
5. High-Value End-to-End Delivery: Beyond physical product supply, we deliver consistent quality, full technical traceability, comprehensive compliance support and cost optimization, aligning with the long-term value priorities of mid-to-high-end international clients.
Please contact HiSiaddi customer service for further customized product solutions.
+86-13120989737 
info@hisiaddi.com 
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