| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery excellent in battery properties such as safety against overcharging or the like of the battery, cycle property, electric capacity and a shelf life. SOLUTION: This lithium secondary battery comprises a positive electrode comprising a double oxide with lithium containing cobalt or nickel; a negative electrode formed of lithium metal, a lithium alloy or a material that can store and release lithium; and a nonaqueous electrolyte with an electrolyte dissolved in a nonaqueous solvent. The lithium secondary battery contains 0.1 wt.%-10 wt.% of tert-alkylbenze derivative and 1 wt.%-1.5 wt.% of biphenyl derivative in the nonaqueous electrolyte. |
