| 摘要 |
PURPOSE: To provide a lithium secondary battery having excellent charge and discharge cycle characteristics and preservation characteristics by adding an amine compound selected out of amine and diamine expressed by specific formulae into nonaqueous electrolyte CONSTITUTION: In a lithium secondary battery provided with a positive electrode, a negative electrode in which carbon material is used as lithium ion storage material, and nonaqueous electrolyte, at least one kind of an amine compound selected out of amine expressed by a formula I and diamine expressed by a formula II is added into the nonaqueous electrolyte. Thereby, a lithium secondary battery having excellent charge and discharge cycle characteristics and preservation characteristics is obtained, as the decomposition of the nonaqueous electrolyte hardly occurs on the surface of the negative electrode when changing. |
