Overview
LiFSI offers high ionic conductivity, good thermal stability and insensitivity to water, significantly improving fast-charging, low-temperature and high-temperature cycling. It is often blended with LiPF6 to balance cost, film formation and aluminum passivation.
- High conductivity, wide temperature range
- H₂O ≤ 20 ppm
- Suited to fast charging and silicon anodes
Technical data
| Item | Battery grade | High-purity grade |
|---|---|---|
| LiFSI / % min | 99.9 | 99.95 |
| Moisture / ppm max | 20 | 10 |
| Cl⁻ / ppm max | 5 | 3 |
| SO₄²⁻ / ppm max | 10 | 5 |
| Free acid / ppm max | 50 | 30 |
| Insolubles / % max | 0.10 | 0.05 |
| Melting point / ℃ | 约 145 | 约 145 |
| Decomposition temperature / ℃ | > 200 | > 200 |
LiFSI is strongly hygroscopic; for long-term storage, argon filling, low temperature and protection from light are recommended.
Reference standards
Standards and values are typical references. Supply is governed by the agreed technical protocol and the batch COA.
Main applications
Packaging and storage
Packaging
5 kg / 25 kg aluminum-foil lined bags in steel drums, argon-filled.
Storage
Dry, dark and cool; use promptly after opening.
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