Patent ID: 9362595
Filing Date: 2016-06-07
CPC Classification: H01G,H01M,Y02E,Y02T

Claim Text:
1. A nonaqueous electrolytic solution, comprising: an electrolyte salt; and a nonaqueous solvent, wherein the nonaqueous electrolytic solution is prepared by dissolving the electrolyte salt in the nonaqueous solvent, the nonaqueous solvent comprises 0.01 to 40% by volume of an ester having two alkyl groups at an α-position carbon of a carbonyl group, and the ester is methyl 2-ethyl-3-methyl butyrate, ethyl 2-ethyl-3-methyl butyrate, 2-propenyl 2-ethyl-3-methyl butyrate, methyl 2-ethyl valerate, ethyl 2-ethyl valerate, propyl 2-ethyl valerate, butyl 2-ethyl valerate, 2-propynyl 2-ethyl valerate, methyl 2-propyl valerate, ethyl 2-propyl valerate, 2-propynyl 2-propyl valerate, methyl 2-ethyl hexanoate, ethyl 2-ethyl hexanoate, propyl 2-ethyl hexanoate, butyl 2-ethyl hexanoate, 2-propynyl 2-ethyl hexanoate, methyl di-iso-propyl acetate, ethyl di-iso-propyl acetate, or 2-propynyl di-iso-propyl acetate.