Lithium bis(trifluoromethanesulfonyl)imide

Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) s a hydrophilic salt. Its chemical formula is LiC₂F₆NO₄S₂.^[1] It is commonly used as a source of lithium ions in electrolytes for lithium-ion batteries. It is an alternative to the commonly used lithium hexafluorophosphate. It is made up of one lithium cation and a bistriflimide anion.^[2] LiTFSI is toxic if swallowed. It is toxic in contact with skin and can cause severe skin burns. Therefore, sealed batteries must not be opened.

References

1. PubChem. "Lithium bis((trifluoromethyl)sulfonyl)azanide". pubchem.ncbi.nlm.nih.gov. Retrieved 2020-09-19.
2. Kalhoff, Julian; Bresser, Dominic; Bolloli, Marco; Alloin, Fannie; Sanchez, Jean-Yves; Passerini, Stefano (2014). "Enabling LiTFSI-based Electrolytes for Safer Lithium-Ion Batteries by Using Linear Fluorinated Carbonates as (Co)Solvent". ChemSusChem. 7 (10): 2939–2946. doi:10.1002/cssc.201402502. PMID 25138922.^{[permanent dead link]}