| 摘要 |
PURPOSE:To obtain a positive electrode active material with excellent cycle characteristic when a carbon material is used for a negative electrode carrier by using a lithium containing composite oxide expressed by the general formula LiMO2 and doped with lithium electrochemically or chemically for a positive electrode active material. CONSTITUTION:A carbon material is used for a negative electrode carrier, and a lithium containing composite oxide expressed by the general formula LiMO2 (M is one or two or more kinds of elements selected among Co, Ni, Fe and Mn) and doped with lithium electrochemically or chemically is used for a positive electrode active material. Lithium ions remaining in the negative electrode carrier in the initial charge/discharge reaction are doped in a positive electrode in advance, the drop of the battery capacity at the initial stage is small, the cycle characteristic can be improved, and a nonaqueous solvent secondary battery with an improved capacity and a long life can be obtained. |
