Lithium Bis(trifluoromethanesulfonyl)imide (LiTFSI)
CAS Number: 90076-65-6
LiTFSI is a thermally and chemically stable lithium salt widely used in solid-state electrolytes, gel polymer batteries, and lithium-sulfur systems. Its large, delocalized anion provides excellent ionic conductivity across a wide temperature range and superior resistance to moisture-induced degradation.
Technical Specifications
| Cl (ppm) | ≤30 |
| Fe (ppm) | ≤1 |
| appearance | White crystalline powder |
| purity (%) | ≥99.9 |
| moisture (ppm) | ≤50 |
| free acid (ppm) | ≤80 |
Applications
- Solid-state polymer electrolyte (PEO-based) systems
- Lithium-sulfur battery electrolyte
- Gel polymer electrolyte formulation
- Ionic liquid-based electrolytes
- Supercapacitor and hybrid energy storage electrolytes
Key Features
- Outstanding thermal stability up to 360°C enables high-temperature battery applications
- Highly soluble in polar aprotic solvents and PEO matrices
- Large TFSI anion promotes lithium-ion dissociation and high conductivity
- Non-corrosive to stainless steel at concentrations used in solid-state systems
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