Patent ID: 8697295
Filing Date: 2014-04-15
Classification: H01M,Y02E

Abstract:
1. A nonaqueous electrolytic solution, comprising: an electrolyte, a nonaqueous solvent, at least one compound selected from the group consisting of a halogen atom-containing cyclic carbonate in a content of from 0.001 to 70% by weight; a cyclic carbonate having a carbon-carbon unsaturated bond in a content of from 0.01 to 5% by weight; and a monofluorophosphate, difluorophosphate, or combination thereof in a content of from 0.001 to 5% by weight, and a compound of formula (2): wherein R wherein the compound of formula (2) comprises at least one nitrile compound selected from the group consisting of crotononitrile, 3-methylcrotononitrile, 3-fluorocrotononitrile, 4-fluorocrotononitrile, 4,4-difluorocrotononitrile, 4,4,4-trifluorocrotononitrile, and 3-(fluoromethyl)crotononitrile.