Patent ID: 8617749
Filing Date: 2013-12-31
Classification: H01M,Y02E

Abstract:
1. A non-aqueous electrolyte, comprising a chain carbonate, vinylene carbonate, a fluorinated cyclic carbonate, a phosphate ester, ethylene carbonate and a supporting electrolyte; wherein the phosphate ester comprises trimethyl phosphate and a fluorinated phosphate ester; the chain carbonate is ethyl methyl carbonate or dimethyl carbonate; the supporting electrolyte is LiPF wherein an additive amount of the phosphate ester is 1 to 15% by weight and an additive amount of the fluorinated phosphate ester is 0.5 to 6% by weight; and wherein the fluorinated phosphate ester is tris(2,2,2 -trifluoroethyl) phosphate.