| 摘要 |
PURPOSE:To obtain good charge-discharge cycle performance by constituting a solid electrolyte secondary battery with a negative electrode mainly comprising Cu, and Cu<+> ion conductive solid electrolyte, and a positive electrode obtained by replacing a part of NbS2 with In. CONSTITUTION:An all solid state solid electrolyte secondary battery is formed with a negative electrode 3 mainly comprising Cu, Cu<+> ion conductive solid electrolyte 2, and a positive electrode 1 comprising CuxNb1-yInyS2+1.5y (X=0.05-0.15, Y=0.01-0.10) which has layer crystal structure obtained by replacing a part of NbS2 which can dope and undoping Cu<+> ion between its layers with In and in which Cu is previously doped. Crystal distortion caused by doping and undoping of Cu<+> ions between S-S layers is reduced and the amount of doping between layers is increased. The drop in battery voltage during discharge is decreased and charge-discharge performance is increased. |
