| 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, R1 represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, or a cyanoalkyl group; R2 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; R3 represents a hydrogen atom, —CH2COOR6, or an alkyl group; R4 represents a hydrogen atom or an alkyl group; R5 has the same meaning as R2, or represents a hydrogen atom, an alkyl group, or —CH2COOR7; R6 and R7 each independently represent an alkyl group, an alkenyl group, an alkynyl group, or a cycloalkyl group; X represents —OR8, -A2-C≡Y2, -A2-C(═O)O-A3-C≡Y2, -A2-C(═O)O-A4 or COOR1; R5 is the same as R1; A1 to A3 each independently represent an alkylene group; A4 represents an alkyl group; Y2 represents CH or N; m indicates an integer of from 0 to 4; n indicates 0 or 1.) |
