NONAQUEOUS ELECTROLYTIC SOLUTION AND LITHIUM SECONDARY BATTERY USING IT

摘要

PROBLEM TO BE SOLVED: To provide a lithium secondary battery having excellent battery characteristics such as a cycle characteristic, electric capacity and a shelf life characteristic of the battery. SOLUTION: In this nonaqueous electrolytic solution wherein an electrolyte is dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution is characterized by including 0.001-0.8 wt.% of one or more kinds of heterocyclic compounds such as 3-chlorothiophene in the nonaqueous electrolytic solution. This lithium secondary battery uses the nonaqueous electrolytic solution.