JPH061694B

PURPOSE:To obtain an alkaline-zinc battery which is reduced in the lowering of capacity, and which is improved in a cycle lift by making the active material layer of a zinc electrode as a multilayer structure, and making the inner active material layer as a constitution to be easily charged. CONSTITUTION:A zinc electrode which is formed with a zinc active material layer is provided in the surface of a current collecting body. The zinc active material layer is constituted by a plurality of layers. A charging voltage in the active material layer of the surface portion is made poorer than that in the active material layer of the inner portion. Whereby, the inclination that a charging and discharging reaction lens to the surface portion of the zinc electrode is relieved, and thus the charging and discharging reaction is uniformly processed in the inner portion and the surface portion of the zinc electrode, and it is possible to improve the cycle characteristic of a battery. Further, the difference between the charging voltage in the active material layer of the surface portion and the charging voltage in the active material layer of the inner portion is constituted to be over at least 10mV when a current of 3mAcm is applied to an appearant electrode surface, and if the thickness of the active material layer in the surface portion is made to occupy 20-60% of the thickness of the active material layer which is formed in the surface of the current collecting body, it is possible to further improve the cycle characteristic.