Patent ID: 9209480
Filing Date: 2015-12-08
Classification: H01M,Y02E,Y02P

Abstract:
1. A nonaqueous electrolyte consisting of: a solvent; an electrolyte salt; at least one sulfonic anhydride in an amount of from 0.01 to 5% by mass relative to the nonaqueous electrolyte, the at least one sulfonic anhydride selected from the group consisting of compounds represented by the chemical formulae (7) and (8) an aromatic compound in an amount of from 0.01 to 2% by mass relative to the nonaqueous electrolyte and selected from the group consisting of tert-butylbenzene, tert-pentylbenzene and 2,4-difluoroanisole; and a content of water not more than 100 ppm.