Non-aqueous electrolyte and lithium secondary battery using the same
OwnerToshikazu Hamamoto, Koji Abe +2inventors
InventorsToshikazu Hamamoto, Koji Abe, Tsutomu Takai, Yasuo Matsumori
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Abstract
A non-aqueous electrolyte comprising (i) a non-aqueous solvent, especially mainly composed of a cyclic carbonate and a cyclic ester and optionally a linear carbonate, and (ii) an electrolyte salt, especially LiBF4, dissolved therein and (iii) a vinyl sulfone derivative having the formula (I): 1 wherein R indicates a C1 to C12 alkyl group, C2 to C12 alkenyl group, or C3 to C6 cycloalkyl, and also a lithium secondary battery using the same are disclosed.
Claims17
A non-aqueous electrolyte comprising (i) a non-aqueous solvent and (ii) an electrolyte salt dissolved therein and (iii) a vinyl sulfone derivative having the formula (I):
- 4
- wherein R indicates a C1 to C12 alkyl group. C2 to C12 alkenyl group, or C3 to C6 cycloalkyl group.
A lithium secondary battery comprising (a) a cathode, (b) an anode and (c) a non-aqueous electrolyte comprising (i) a non-aqueous solvent and (ii) an electrolyte salt dissolved therein, and (iii) a vinyl sulfone derivative having the formula (I):
- 5
- wherein R indicates a C1 to C12 alkyl group, C2 to C12 alkenyl group, or C3 to C6 cycloalkyl group.
Dependencies are inferred from the claim text.