Patent ID: 8535833
Filing Date: 2013-09-17
Classification: H01M,Y02E

Abstract:
1. A non-aqueous electrolyte solution for a lithium secondary battery, comprising a lithium salt and an organic solvent, wherein the non-aqueous electrolyte solution further comprises: a compound of the following chemistry figure 1; and a sulfonate compound the following chemistry figure 2: wherein R1 to R6 are alkyl, alkenyl or alkylene group having 1 to 4 carbons, independently, and R1 to R6 may be identical to or different from each other, wherein R1 and R2 are identical to or different from each other and are alkylene group having 1 to 6 carbons, which may be unsubstituted or substituted with alkyl or alkenyl group having 1 to 6 carbons, independently, and R3 is any one selected from the group consisting of hydrogen, linear alkyl group having 1 to 20 carbons, cyclic alkyl group having 3 to 8 carbons, linear alkenyl group having 2 to 20 carbons, cyclic alkenyl group having 3 to 8 carbons, haloalkyl group, halophenyl group, phenyl group and benzyl group.