Lithium bis(trifluoromethanesulfonyl)imide explained

Lithium bis(trifluoromethanesulfonyl)imide, often simply referred to as LiTFSI, is a hydrophilic salt with the chemical formula LiC2F6NO4S2.[1] It is commonly used as Li-ion source in electrolytes for Li-ion batteries as a safer alternative to commonly used lithium hexafluorophosphate.[2] 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.[3] [4]

Notes and References

  1. Web site: 90076-65-6 C2F6LiNO4S2 - PubChem. Pubchem. pubchem.ncbi.nlm.nih.gov. en. 2017-03-11.
  2. 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. en. 7. 10. 2939–2946. 10.1002/cssc.201402502. 25138922. 1864-564X.
  3. 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. en. 350. 6263. 938–943. 10.1126/science.aab1595. 0036-8075. 26586759. 206637574.
  4. Smith. Leland. Dunn. Bruce. 2015-11-20. Opening the window for aqueous electrolytes. Science. en. 350. 2015. 918. 10.1126/science.aad5575. 0036-8075. 26586752. 206643843.

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