Materials / grade-specific review
LiFSI Electrolyte Salt
Lithium bis(fluorosulfonyl)imide at ≥99.9% — better hydrolysis stability than LiPF6, with chloride and sulfate limits that decide aluminium compatibility.
APPLICATION & GRADE
Grade / designation: SZ-M1-ST02
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
Low-temperature electrolytes
High-voltage and fast-charge formulations
LiFSI/LiPF6 blend development
Solid polymer electrolyte research
Grade & supply review
Purity and individual impurity limits
Salt form and particle size
Additive ratio and blended packages
Dangerous-goods packing and transport documentation
Representative image. Actual material appearance varies by grade and lot — request a current photograph or sample.
About this material
LiFSI does not hydrolyse to HF the way LiPF6 does, which makes it attractive for low-temperature, high-voltage and long-life cells. It also forms a more conductive, more stable SEI on graphite and a better passivation layer on aluminium.
The practical barriers are cost and corrosion. At high potential, LiFSI can attack the aluminium current collector unless a passivating additive is present, and residual chloride from synthesis accelerates that attack. The ≤10 ppm chloride limit on this grade is the specification that matters.
Documentation, controls and care
Quality controls
- Certificate of analysis per batch
- Moisture by Karl Fischer, reported per lot
- Trace metal screening
- Retained samples held for 12 months
Handling & storage
- Hygroscopic — weigh and transfer in a dry room or glove box.
- Store sealed under argon; discard if the powder cakes or discolours.
- Do not blend into an electrolyte above 60 °C; decomposition products form above that.
Grades on this page are references used to describe capability; they are not a fixed product list.
Specification values are typical windows compiled from public technical references and supplier
datasheets, and are provided for selection guidance only. The specification delivered against your
order is agreed in writing, and measured values are confirmed on the batch certificate of analysis.
Materials listed here may be hazardous; they must be handled by qualified personnel under applicable
regulations.
Material specifications
| Chemistry | Lithium bis(fluorosulfonyl)imide |
|---|---|
| Purity | ≥99.9% |
| Water content | ≤20 ppm |
| Chloride | ≤10 ppm |
| Sulfate | ≤20 ppm |
| Sodium | ≤10 ppm |
| Potassium | ≤5 ppm |
| Appearance | White crystalline powder |
| Melting point | 145–148 °C |
| Packaging | 100 g / 500 g / 1 kg, argon-sealed |
Grade & packaging options
Custom particle size or purity windows
Pilot and production quantities
Technical review call with our materials team
Supply boundaries
Reference grade, not a fixed catalogue item. Capacity, particle size, coating, purity and packaging are set to the specification your process needs — the delivered grade may differ from the values shown here.
Packaging & handling
Laboratory pack | 50 mL / 250 mL septum bottle
Pilot pack | 1 L / 5 L nitrogen-capped container
Production pack | 20 L drum, argon blanket
Information for material review
Cell chemistry, format and voltage window
Target capacity, areal loading or formulation
Process route — NMP/PVDF, aqueous, or dry
Quantity per lot, packing and delivery schedule
Training in China
Training at our China facility is available for this product. Scope, schedule and language are agreed for each project.
Related products
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