| 摘要 |
PURPOSE:To improve charge-discharge performance by limiting the x value of a positive active material within a specified range during use in a secondary battery using mainly Cu as a negative electrode, mainly CuxTiS2 compound as a positive electrode, and conductive solid electrolyte. CONSTITUTION:A solid electrolyte secondary battery is formed with a negative electrode mainly comprising Cu, a positive electrode mainly comprising an intermetallic compound selected from CuxTiS2, CuxTiCryS2+1.5y, (0<=x<0.20, 0.01< y<0.2), and a Cu<+> ion conductive solid electrolyte such as RbCu4I1.25C3.75. When the battery is discharged and charged, the x value of the positive active material is limited to -0.1-0.21. By this charge-discharge method, charge-discharge performance of the battery is improved. |
