Electrolytes for lithium-ion batteries operating at extreme conditions

Cao, Xia; Zhang, Ji-Guang; Xu, Wu

Electrolytes for lithium-ion batteries operating at extreme conditions

Patent · Tue Jul 18 04:00:00 EDT 2023

OSTI ID:2221987

Cao, Xia; Zhang, Ji-Guang; Xu, Wu

Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, a fluorinated phosphate, a fluorinated phosphite, or any combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent. In some electrolytes, the nonaqueous solvent comprises an ester.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830; EE0008444

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Number(s):: 11,705,580

Application Number:: 17/537,149

OSTI ID:: 2221987

Country of Publication:: United States

Language:: English

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