NONAQUEOUS ELECTROLYTE SOLUTION, ELECTROCHEMICAL ELEMENT USING SAME, AND 1,2-DIOXYPROPANE COMPOUND USED IN SAME
申请人:Miyoshi Kazuhiro
公开号:US20130004862A1
公开(公告)日:2013-01-03
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 R
1
and R
2
each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms;
X
1
represents a group selected from —S(═O)—, —S(═O)
2
—, —C(═O)—, —CR
3
R
4
—, —P(═O)(OR
5
)— and —SiR
6
R
7
—; R
3
and R
4
each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; R
5
to R
7
each represent an alkyl group having from 1 to 6 carbon atoms.
Y
1
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;
Z
1
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 X
1
, Y
1
and Z
1
may be substituted with a halogen atom).
本发明的目的是提供一种非水电解质溶液,能够在高温充电储存后改善低温负载特性,以及使用它的电化学元件和用于它的1,2-二氧丙烷化合物。本发明的非水电解质溶液包括溶解在非水溶剂中的电解质盐,并含有由上述通式(I)所表示的1,2-二氧丙烷化合物。(其中,R1和R2各代表氢原子或具有1至6个碳原子的烷基;X1代表从—S(═O)—、—S(═O)2—、—C(═O)—、—CR3R4—、—P(═O)(OR5)—和—SiR6R7—中选择的一组基团;R3和R4各代表氢原子或具有1至6个碳原子的烷基;R5至R7各代表具有1至6个碳原子的烷基。Y1代表烷基亚磺酰基、烯基亚磺酰基、炔基亚磺酰基、芳基亚磺酰基、烷基磺酰基、烯基磺酰基、炔基磺酰基或芳基磺酰基;Z1代表氢原子、烷基、烷基亚磺酰甲基、烯基亚磺酰甲基、炔基亚磺酰甲基、芳基亚磺酰甲基、烷基磺酰甲基、烯基磺酰甲基、炔基磺酰甲基或芳基磺酰甲基;但至少在X1、Y1和Z1的碳原子上的一个氢原子可以被卤素原子取代。)