| 摘要 |
PURPOSE:To improve discharge voltage in a final stage by adding a specified amount of silver sulfide to a positive electrode in a nonaqueous electrolyte battery using lithium as negative active material and iron disulfide as positive active material. CONSTITUTION:1-20wt% silver sulfide is mixed to iron disulfide, and conductive material comprising acetylene black and graphite and binder comprising fluorine resin powder are mixed thereto. The mixture is press-molded and baked to prepare a positive electrode 1. The positive electrode is combined with a negative electrode 2 comprising lithium or lithium alloy and a separator 6 to form a nonaqueous electrolyte battery. Thereby, reaction of silver sulfide with lithium progressed in parallel with reaction of iron difulfide with lithium, and highly conductive silver is produced in the positive electrode 2. Therefore, flat discharge voltage is obtained even in the final discharge stage. |
