LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a lithium secondary battery increased in the open circuit voltage between battery terminals at the finishing of charging and having little deterioration of capacity against charge and discharge cycle.

SOLUTION: A vinyl-ethylene carbonate derivative and a vinylene carbonate derivative are made to contain in a non-aqueous electrolytic solution of the lithium secondary battery having the open circuit voltage between battery terminals of 4.25 V or more at the finishing of charging at 25°C.

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