NON-ACQUEOUS ELECTROLYTE LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a non-acqueous electrolyte lithium secondary battery having high safety and excellent battery performance. SOLUTION: In this non-acqueous electrolyte lithium secondary battery, non-acqueous electrolyte contains salt melting at a room temperature as a main constituent component, a negative electrode contains a negative electrode active substance in which operation potential of the negative electrode becomes nobler than 1 V for potential of metallic lithium, and a positive electrode contains a positive electrode active substance in which operation potential of the positive electrode becomes nobler than 4.5 V for the potential of metallic lithium.