Nonaqueous electrolyte solution, electrochemical element using same, and 1,2-dioxypropane compound used in same

摘要

An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving low-temperature load characteristics after high temperature charging storage, an electrochemical element using it, and a 1,2-dioxypropane compound used for it.;The nonaqueous electrolytic solution of the present invention comprises an electrolyte salt dissolved in a nonaqueous solvent, and contains a 1,2-dioxypropane compound represented by the above-mentioned general formula (I).;(wherein R1 and R2 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms;X1 represents a group selected from —S(═O)—, —S(═O)2—, —C(═O)—, —CR3R4—, —P(═O)(OR5)— and —SiR6R7—; R3 and R4 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; R5 to R7 each represent an alkyl group having from 1 to 6 carbon atoms.Y1 represents an alkylsulfinyl group, an alkenylsulfinyl group, an alkynylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an alkenylsulfonyl group, an alkynylsulfonyl group, or an arylsulfonyl group;Z1 represents a hydrogen atom, an alkyl group, an alkylsulfinylmethyl group, an alkenylsulfinylmethyl group, an alkynylsulfinylmethyl group, an arylsulfinylmethyl group, an alkylsulfonylmethyl group, an alkenylsulfonylmethyl group, an alkynylsulfonylmethyl group, or an arylsulfonylmethyl group;provided that at least one hydrogen atom on the carbon atom of X1, Y1 and Z1 may be substituted with a halogen atom).

主权项

1. A nonaqueous electrolytic comprising an electrolyte salt dissolved in a nonaqueous solvent and a 1,2-dioxypropane compound represented by formula (I) in an amount of from 0.001 to 20% by mass of the nonaqueous electrolytic solution: wherein R1 and R2 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; X1 represents a group selected from the group consisting of —S(═O)—, —S(═O)2—, —C(═O)—, —CR3R4—, —P(═O)(OR5)— and —SiR6R7—; R3 and R4 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; R5 to R7 each represent an alkyl group having from 1 to 6 carbon atoms; Y1 represents an alkylsulfinyl group having from 1 to 6 carbon atoms, an alkenylsulfinyl group having from 2 to 6 carbon atoms, an alkynylsulfinyl group having from 3 to 6 carbon atoms, an arylsulfinyl group having from 6 to 12 carbon atoms, an alkylsulfonyl group having from 1 to 6 carbon atoms, an alkenylsulfonyl group having from 2 to 6 carbon atoms, an alkynylsulfonyl group having from 3 to 6 carbon atoms, or an arylsulfonyl group having from 6 to 12 carbon atoms; Z1 represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, an alkylsulfinylmethyl group having from 2 to 7 carbon atoms, an alkenylsulfinylmethyl group having from 3 to 7 carbon atoms, an alkynylsulfinylmethyl group having from 4 to 7 carbon atoms, an arylsulfinylmethyl group having from 7 to 13 carbon atoms, an alkylsulfonylmethyl group having from 2 to 7 carbon atoms, an alkenylsulfonylmethyl group having from 3 to 7 carbon atoms, an alkynylsulfonylmethyl group having from 4 to 7 carbon atoms, or an arylsulfonylmethyl group having from 7 to 13 carbon atoms.