| 摘要 |
A secondary battery including: a positive electrode which comprises an oxide which absorbs and releases lithium ions; a negative electrode which comprises a material which absorbs and releases the lithium ions; and a first electrolyte solution which transports charge carriers between the positive electrode and the negative electrode; wherein the positive electrode comprises a compound, which is represented by the composition formula LiaM1bOd or LiaM1bM2cOd, and the positive electrode is formed by electrically combining lithium metal and a lithium-containing transition metal oxide in a second electrolyte solution which includes lithium ions. In the formulae, a, b, c and d represent a composition ratio of the above composition formulae, and are numbers in ranges of: 1.2≦̸a≦̸2, 0<b, c≦̸2, and 2≦̸d≦̸4, M1 and M2 in the above formulae represent any one kind of elements selected from the group consisting of Co, Ni, Mn, Fe, Al, Sn, Mg, Ge, Si and P, and M1 and M2 are different from each other. |
