| 摘要 |
PURPOSE:To retard deterioration in surface contact between a negative electrode and an electrolyte caused by the advance of discharge by forming a covering layer on the surface of a negative electrode by using a metal which is chemically stable to the negative electrode and has a melting point higher than that of the negative material. CONSTITUTION:A covering layer is formed on the surface of a negative electrode by using a metal which is chemically stable to the negative electrode and has a melting point higher than that of the negative material. The whole solid lithium battery is heated at temperature higher than the melting point of the negative material without leakage of melted lithium or reaction of lithium with atmospheric gas. Thereby, strain or voids in the negative electrode is removed and the surface contact between the solid electrolyte and the negative electrode is made good. By forming the covering layer with a metal such as Mo, Ta, W, Nb, Zr, Hf, and Ni, even when the battery is heated at temperature exceeding the melting point of the negative material, melted negative material is steadily retained within the covering layer, and reaction with atmospheric gas is retarded. |
