| 摘要 |
Disclosed are a nonaqueous electrolytic solution of an electrolyte dissolved in a nonaqueous solvent, which contains a carboxylate represented by the following general formula (I) in an amount of from 0.01 to 10% by mass of the nonaqueous electrolytic solution; and an electrochemical element using it.
(In the formula, R 1 represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, or a cyanoalkyl group; R 2 represents a hydrogen atom, an alkoxy group, a formyloxy group, an acyloxy group, an alkoxycarbonyloxy group, an alkanesulfonyloxy group, an arylsulfonyloxy group, an alkylsilyloxy group, a dialkylphosphoryloxy group, an alkoxy(alkyl)phosphoryloxy group, or a dialkoxyphosphoryloxy group; R 3 represents a hydrogen atom, -CH 2 COOR 6 , or an alkyl group; R 4 represents a hydrogen atom or an alkyl group; R 5 has the same meaning as R 2 , or represents a hydrogen atom, an alkyl group, or - CH 2 COOR 7 ; R 6 and R 7 each independently represent an alkyl group, an alkenyl group, an alkynyl group, or a cycloalkyl group; X represents -OR 8 , -A 2 -C‰¡Y 2 , -A 2 -C(=O)O-A 3 -C‰¡Y 2 , -A 2 -C(=O)O-A 4 or COOR 1 ; R 8 is the same as R 1 ; A 1 to A 3 each independently represent an alkylene group; A 4 represents an alkyl group; Y 2 represents CH or N; m indicates an integer of from 0 to 4; n indicates 0 or 1.) |
