| 摘要 |
A nonaqueous electrolyte has electrolyte salt dissolved in a nonaqueous solvent, wherein the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in all nonaqueous electrolyte solution components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1). (Here, at least one of R<SUB>1 </SUB>and R<SUB>2 </SUB>designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group). Thus, the decomposition of the halogenated solvent is suppressed.
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