Patent ID: 9472813
Filing Date: 2016-10-18
CPC Classification: H01M,Y02E,Y02T

Claim Text:
1. A nonaqueous battery electrolyte solution comprising: (1) at least one lithium salt in an amount to provide at least a 0.1 M solution of the lithium salt in the battery electrolyte solution, (2) 2 methoxy-1-methylethyl acetate, 2-methoxy-2-methylethyl acetate, 2-ethoxy-1-methylethyl acetate, 2-ethoxy-2-methylethyl acetate, 2-methoxyethyl propionate, 2-ethyoxyethyl propionate, 2-methoxy-1-methylethyl propionate, 2-ethoxy-1-methylethyl propionate, 2-methoxy-2-methylethyl propionate, 2-ethoxy-2-methylethyl propionate, or a mixture of any two or more thereof and (3) from 0.5 to 5% by weight, based on the combined weight of components (2) and (3), of vinylene carbonate, 4-vinyl-1,3-dioxolan-2-one, fluoroethylenecarbonate or a mixture of any two or more thereof, which battery electrolyte solution contains from 0 to 30% by weight of an additional solvent.