NON-AQUEOUS ELECTROLYTIC SOLUTION FOR SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a non-aqueous electrolytic solution for a secondary battery that is excellent in cycle characteristics, storage characteristics, gas occurrence suppression during continuous charging, and battery characteristics, and a non-aqueous electrolytic solution secondary battery using the same.

SOLUTION: The non-aqueous electrolytic solution is mainly composed of an electrolyte and a non-aqueous solvent dissolving the electrolyte. The non-aqueous electrolytic solution includes a monofluorophosphoric acid salt and/or a difluorophosphoric acid salt. The non-aqueous electrolytic solution further includes at least one kind of compound selected from a group consisting of a compound expressed by general formula (1), a nitrile compound, an isocyanate compound, a phosphazene compound, a disulfonic acid ester compound, a sulfide compound, a disulfide compound, an acid anhydride, a lactone compound having a substituent group at an α-position, and a compound having a carbon-carbon triple bond. Here, in general formula (1), R1, R2, and R3represent each independently a fluorine atom, a 1-12C alkyl group that may be replaced by a fluorine atom, or a 1-12C alkoxy group that may be replaced by a fluorine atom.

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