| 摘要 |
PURPOSE:To improve the cycling characteristic and self-discharge characteristic by using the n-doping agent made of a carbon material within a range satisfying a specific condition as a negative electrode active material and using at least one type selected among a group of specific compounds as a positive electrode active material. CONSTITUTION:A carbon material used as a negative active material has a specific surface area A (m<2>/g) by BET equation laryer than 0.l and less than 100. If the n-doping agent of the carbon material is used as a stable electrode active material, values of the crystal thickness Lc (Angstrom ) and true densityrho(g/cm<2>) by X-ray diffraction are important, and the values of the crystal thickness Lc(Angstrom ) and true density rho(g/cm<2>) are set within ranges: 1.70<rho<2.18, 10<Lc<120rho-189. The positive electrode active material is selected among a group of TiS2, Cu2V2O7, a-V2O5-P2O5, MoO3, a-MoS3, MoS2, V2O5, V6O13, LiCoO2. Thereby, the cycling characteristic and self-discharge characteristic are improved. |
