| 摘要 |
[PROBLEMS] Disclosed is a lithium secondary battery wherein both overcharge safety and cycle characteristics are improved together. [MEANS FOR SOLVING PROBLEMS] As the nonaqueous electrolyte solution for such a lithium secondar y battery, there is used a nonaqueous electrolyte solution obtained by dissolving an electrolyte in a nonaqueous solvent containing plural kinds of cyclic carbonate compounds which electrolyte solution further contains 1-10 mass% of a cyclohexylbenzene compound wherein a halogen atom is bonded to a benzene ring and 0.1-5 mass% of a fluorobenzene compound. |
