| 摘要 |
PURPOSE:To improve the cycle characteristics of a nonaqueous secondary battery having a negative electrode active material of lithium or alloy thereof by using reformed manganese oxide as a positive active material. CONSTITUTION:A battery is constituted with a negative electrode having an active material of lithium or alloy thereof, and an electrode having an active material of compound oxide expressed by LixAlyMnO2. In this case, an oxide obtained from mixing and heat treating a manganese compound, a lithium compound, an aluminum compound is used as a manganese oxide containing the compound oxide expressed as LixAlyMnO2. As a result, the crystal structure of the compound oxide is substantially distorted and, therefore, a lithium ion dispersion in a solid phase becomes easy. Also, aluminum is eluded into an electrolyte and deposited on the negative electrode, thereby generating Li-Al alloy and ensuring freedom from cycle deterioration. |
