| 摘要 |
An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range, an energy storage device using it. A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which comprises at least one cyclic sulfonic acid ester compound represented by the following general formula (I), and an energy storage device.
(wherein R 1 and R 2 may be the same or different, each representing a hydrogen atom, an alkyl group in which at least one hydrogen atom may be substituted with a halogen atom, or a halogen atom; L represents a divalent hydrocarbon group of an alkylene group in which at least one hydrogen atom is substituted with OR 3 , or a divalent hydrocarbon group of an alkylene group in which at least one methylene (CH 2 ) is substituted with C(=O); R 3 represents a formyl group, an alkylcarbonyl group, an alkenylcarbonyl group, an alkenylcarbonyl group, an arylcarbonyl group, an alkoxycarbonyl group, an alkenyloxycarbonyl group, an alkynyloxycarbonyl group, an aryloxycarbonyl group, a 2,2-dioxide-1,2-oxathiolan-4-yloxycarbonyl group, a 2,2-dioxide-1,2-oxathian-4-yloxycarbonyl group, an alkanesulfonyl group, an arylsulfonyl group, a dialkylphosphoryl group, an alkoxy(alkyl)phosphoryl group, a dialkoxyphosphoryl group, -S(O)-OR 4 , or -C(O)CH 2 P(O)(OR 5 ) 2 ; R 4 represents an alkyl group, a 2,2-dioxide-1,2-oxathiolan-4-yl group, or a 2,2-dioxide-1,2-oxathian-4-yl group; R 5 represents an alkyl group; further, in R 3 , at least one hydrogen atom may be substituted with a halogen atom, and L may be further substituted with any of an alkyl group, a haloalkyl group or a halogen atom). |
