Publication number: 20240213540
Abstract: Described herein are lithium-metal rechargeable electrochemical cells comprising positive single-crystal nickel-manganese-cobalt (NMC)-containing structures and liquid electrolytes comprising one or more imide-containing salts, such as bis(trifluoromethanesulfonyl)imide (TFSI?)-containing salts, bis(fluorosulfonyl)imide (FSI?)-containing salts, and bis(pentafluoroethanesulfonyl)imide (BETI?)-containing salts. These salts can also include various cations, such as lithium (Li+), potassium (K+), sodium (Na+), cesium (Cs+), n-propyl-n-methylpyrrolidinium (Pyr13+), n-octyl-n-methylpyrrolidinium (Pyr18+), and 1-methyl-1-pentylpyrrolidinium (Pyr15+). For example, imide-containing salts can act as a source of lithium ions in lithium-metal salts. In some examples, the liquid electrolyte further comprises one or more of 1,2-dimethoxyethane (DME), 2,2,2-Trifluoroethyl Ether (TFEE), 1,1,2,2-Tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (TFPE), one or more phosphites, and one or more phosphates.
Type:
Application
Filed:
December 22, 2023
Publication date:
June 27, 2024
Applicant:
Cuberg, Inc.
Inventors:
Michael McEldrew, Lauren Nicole Burke, Thomas Patrick Whitehill-Nigl, Vicky Thi Huynh, Aaron R. Garg, Sanjay Nanda, Richard Wang