| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic electrolyte secondary battery in which deterioration in discharge capacity accompanying charge/discharge cycles is retarded and cycle life is lengthened by using LiMn2 O4 synthesized from lithium iodide and manganese dioxide as a positive active material. SOLUTION: LiMn2 O4 , prepared by heating lithium diode (LiI) and manganese dioxide (MnO2 ) in a nitrogen atmosphere at about 300 deg.C, is used as a positive active material of an organic electrolyte secondary battery. Metallic lithium or an lithium alloy (such as LiAl and LiPb) is used as a negative active material, and a solution prepared by dissolving LiClO4 in 1,2-dimethoxy ethane, for example, is used as an electrolyte. Lithium ions of the negative material, moved to a positive electrode by discharge reaction, are effectively deintercalated by charge reaction, and the charge/discharge cycle life in the organic electrolyte secondary battery is lengthened sharply. |
