NONAQUEOUS ELECTROLYTIC SOLUTION AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME

摘要

1. A non-aqueous electrolytic solution comprising an electrolytic salt in a non-aqueous solvent, which further contains a pentafluorophenoxy compound having the formula (I): in which R represents a substituting group such as an alkylcarbonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, and an alkanesulfonyl group, under the condition that at least one hydrogen atom contained in the substituting group can be substituted with a halogen atom or an aryl group.