| 摘要 |
PURPOSE:To obtain a simple, effective and practical manufacturing method by causing materials to be contained in a positive electrode to be oxidized at potential at which all of the materials are oxidized more easily than a positive electrode active material, i.e., the one which is lower than the charging reaction potential of the positive electrode. CONSTITUTION:In a secondary battery comprising a negative electrode, a positive electrode and a separator, all of which are composed mainly of a hydrogen storage alloy, and an electrolyte distributed over all of them, the positive electrode contains components which are oxidized at potential lower than the charging reaction potential of time positive electrode. The components contained in the positive electrode generate hydrogen during their oxidation process. The oxidation reaction product of the components contained in the positive electrode works in favor of the reaction of positive electrode active material. The components contained in the positive electrode are desirably such metals as lithium, magnesium, aluminium, manganese, iron, cobalt, zinc, cadmium and the like. |
