Lithium bis(trifluoromethanesulfonyl)imide, often simply referred to as LiTFSI, is a

hydrophilic A hydrophile is a molecule or other molecular entity that is attracted to water molecules and tends to be dissolved by water.Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon'' Oxford: Clarendon Press. In contrast, hydrophobes are ...

salt with the chemical formula LiC₂F₆NO₄S₂. It is commonly used as Li-ion source in

electrolytes An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water. Upon di ...

for Li-ion batteries as a safer alternative to commonly used

lithium hexafluorophosphate Lithium hexafluorophosphate is an inorganic compound with the formula Li PF6. It is a white crystalline powder. Production LiPF6 is manufactured by reacting phosphorus pentachloride with hydrogen fluoride and lithium fluoride :PCl5 + LiF + ...

. It is made up of one Li cation and a bistriflimide anion. 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.

References

Lithium salts Lithium-ion batteries Organolithium compounds Trifluoromethyl compounds {{organic-compound-stub