Patent ID: 9640832
Date: 2017-05-02
CPC Classifications: H01M,Y02E

Claim:
1. A non-aqueous electrolyte secondary battery comprising: a positive electrode; a negative electrode containing graphitizable carbon; and a non-aqueous electrolyte solution comprising an electrolyte salt dissolved in a non-aqueous solvent and additives of fluoroethylenecarbonate and lithium difluorobis(oxalato)phosphate, the non-aqueous electrolyte solution containing, with respect to 100 parts by weight of the non-aqueous electrolyte solution, the fluoroethylenecarbonate at 0.5 parts by weight or more and 1.0 parts by weight or less, and the lithium difluorobis(oxalato)phosphate at 0.5 parts by weight or more and 1.0 parts by weight or less.