| abstract |
PURPOSE:To improve the charge/discharge cycle characteristic by using a positive electrode having a mixture of manganese dioxide containing Li2MnO3 and a specific manganese oxide as an active material. CONSTITUTION:A mixture of manganese dioxide containing Li2MnO3 and manganese oxide containing Li and having peaks near 2theta=22 deg., 31.5 deg., 42 deg. and 55 deg. in the X-ray refraction diagram by the CuKa line is used for a positive electrode active material. A nonaqueous secondary battery with the excellent charge/ discharge cycle characteristic at either the shallow depth or the deep depth can be obtained. It is applicable not only to the nonaqueous electrolyte secondary battery but also to a solid electrolyte secondary battery. |