Lithium bis(trifluoromethanesulfonyl)imide
Chemical compound / From Wikipedia, the free encyclopedia
Lithium bis(trifluoromethanesulfonyl)imide, often simply referred to as LiTFSI, is a hydrophilic salt with the chemical formula LiC2F6NO4S2.[2] It is commonly used as Li-ion source in electrolytes for Li-ion batteries as a safer alternative to commonly used lithium hexafluorophosphate.[3] It is made up of one Li cation and a bistriflimide anion.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Lithium bis(trifluoromethylsulfonyl)azanide | |
Other names
LiTFSI | |
Identifiers | |
3D model (JSmol) |
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ECHA InfoCard | 100.101.430 |
PubChem CID |
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RTECS number |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
LiC 2F 6NO 4S 2 | |
Molar mass | 287.075 g/mol |
Appearance | White solid |
Odor | odorless |
Density | 1.33 g/cm3 |
Melting point | 236 °C (457 °F; 509 K) |
80.65% (22 °C)[1] | |
Hazards | |
Safety data sheet (SDS) | |
Related compounds | |
Other anions |
Bistriflimide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Because of its very high solubility in water (> 21 m), LiTFSI has been used as lithium salt in water-in-salt electrolytes for aqueous lithium-ion batteries.[4][5]