NON-AQUEOUS ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a high energy-density lithium secondary battery high in charging-discharging efficiency, excellent in capacity retaining property and also excellent in both cell characteristics and safety over a wide temperature range, and a non-aqueous electrolyte used therein. SOLUTION: The electrolyte is obtained by dissolving a lithium salt in a non-aqueous solvent. The non-aqueous solvent contains a compound having a 1,2,3-oxadiazolim-5-olate skeleton.