| 摘要 |
There is provided an electrolytic solution which has excellent flame retardance, low temperature characteristics and withstand voltage, high solubility of an electrolyte salt and excellent compatibility with hydrocarbon solvents, and comprises a chain carbonate (I) and an electrolyte salt (II), and the chain carbonate (I) is represented by the formula (I): wherein Rf<SUP>1 </SUP>is a fluorine-containing alkyl group having a fluorine content of 10 to 76% by mass and having, at its end, a moiety represented by the formula (Ia): <?in-line-formulae description="In-line Formulae" end="lead"?>(HCX<SUP>1</SUP>X<SUP>2</SUP> (Ia)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein X<SUP>1 </SUP>and X<SUP>2 </SUP>are the same or different and each is H or F; Rf<SUP>2 </SUP>is a fluorine-containing alkyl group having a fluorine content of 10 to 76% by mass and having, at its end, -CF<SUB>3 </SUB>or the moiety represented by the above-mentioned formula (Ia).
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