| 摘要 |
PURPOSE:To easily eliminate a high potential part at initial discharging time by adding a sulfide, which has a lower potential against lithium in nonaqueous electrolyte than manganese dioxide, to a positive electrode. CONSTITUTION:A battery provided with lithium active substance as the negative electrode, manganese dioxide active substance as the positive electrode, and nonaqueous electrolyte, wherein a sulfide having a lower potential against lithium in nonaqueous electrolyte than manganese dioxide is added to the positive electrode. A sulfide which has a lower potential against lithium in nonaqueous electrolyte than manganese dioxide is added to all active substance or high-order MnOx (x>2), in order to form a positive electrode. A battery is formed in combination of the positive electrode with lithium negative electrode and nonaqueous electrolyte. In existence of nonaqueous electrolyte, a kind of local battery is formed between the high-order manganese dioxide and sulfide in the positive electrode, and the high-order manganese dioxide is reduced to lower-order manganese dioxide resulting in removal of a high potential part at initial discharging time. |
