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.
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]
References
- ^ Gilbert, William J. R.; Safarov, Javid; Minnick, David L.; Rocha, M. Alejandra; Hassel, Egon P.; Shiflett, Mark B. (2017-06-05). "Density, Viscosity, and Vapor Pressure Measurements of Water + Lithium Bis(trifluoromethylsulfonyl)imide Solutions". Journal of Chemical & Engineering Data. 62 (7). American Chemical Society (ACS): 2056–2066. doi:10.1021/acs.jced.7b00135. ISSN 0021-9568.
- ^ Pubchem. "90076-65-6 | C2F6LiNO4S2 - PubChem". pubchem.ncbi.nlm.nih.gov. Retrieved 2017-03-11.
- ^ Kalhoff, Julian; Bresser, Dominic; Bolloli, Marco; Alloin, Fannie; Sanchez, Jean-Yves; Passerini, Stefano (2014-10-01). "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. ISSN 1864-564X. PMID 25138922.
- ^ Suo, Liumin; Borodin, Oleg; Gao, Tao; Olguin, Marco; Ho, Janet; Fan, Xiulin; Luo, Chao; Wang, Chunsheng; Xu, Kang (2015-11-20). ""Water-in-salt" electrolyte enables high-voltage aqueous lithium-ion chemistries". Science. 350 (6263): 938–943. doi:10.1126/science.aab1595. ISSN 0036-8075. PMID 26586759. S2CID 206637574.
- ^ Smith, Leland; Dunn, Bruce (2015-11-20). "Opening the window for aqueous electrolytes". Science. 350 (2015): 918. doi:10.1126/science.aad5575. ISSN 0036-8075. PMID 26586752. S2CID 206643843.