NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE

摘要

PROBLEM TO BE SOLVED: To improve a recyclability of a lithium secondary battery.

SOLUTION: The lithium secondary battery includes a positive electrode, negative electrode, and nonaqueous electrolyte filled in a vessel. The positive electrode contains lithium containing transition metal oxide. The nonaqueous electrolyte contains electrolyte selected from a group of LiBF4and LiPF6, and nonaqueous solvent comprising cyclic carbonate and noncyclic carbonate containing 1-50 g of cumene or cyclohexylbenzene per 1 kg of the nonaqueous electrolyte.

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