Electrolyte for lithium ion batteries

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United States of America Patent

PATENT NO 8334404
APP PUB NO 20100062346A1
SERIAL NO

12553366

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Abstract

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A non-aqueous electrolyte usable in rechargeable lithium-ion batteries including a solution of LiPF6/carbonate based electrolytes with low concentrations of LiFOP such that the thermal stability is increased compared to a standard lithium battery. A method of making lithium tetrafluorophospahte (LiF4C2O4, LiFOP) including, reacting PF5 with lithium oxalate, recrystallizing DMC/dichloromethane from a 1:1 mixture of to separate LiF4OP from LiPF6 to form a lithium salt. An electric current producing rechargeable Li-ion cell. The rechargeable lithium ion cell includes an anode, a cathode, and a non-aqueous electrolyte comprising a solution of a lithium salt in a non-aqueous organic solvent containing lithium tetrafluorooxalatophosphate (LiPF4(C2O4), LiF4OP).

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Patent Owner(s)

  • RHODE ISLAND BOARD OF EDUCATION, STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS;BOARD OF GOVERNORS FOR HIGHER EDUCATION, STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lucht, Brett Wakefield, US 12 64
Xiao, Ang Kingston, US 61 359
Xu, Mengqing Kingston, US 5 36
Yang, Li Kingston, US 394 2345

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