Non-aqueous electrolytic solution
AssigneeDaikin Industries, Ltd.
InventorsMeiten Koh, Hideo Sakata, Hitomi Nakazawa, Michiru Tanaka, Akiyoshi Yamauchi
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Abstract
There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.
Claims8
A non-aqueous electrolytic solution comprising:
- (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing cyclic carbonate represented by the formula (A1):
- wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3;
- at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and
- (B) at least one fluorine-containing solvent selected from the group consisting of (B1) a fluorine-containing chain ether, (B2) a fluorine-containing chain ester and (B3) a fluorine-containing chain carbonate, and
- (II) an electrolyte salt.
Dependencies are inferred from the claim text.