Sealed type nickel-hydride battery and production process thereof.

摘要

A sealed type nickel-hydride battery comprising a positive electrode made of nickel oxides as an active material, a negative electrode made of hydrogen storage alloys as main materials which may absorb and desorb hydrogen as an active material electrochemically, an alkaline electrolyte, and a separator, and prior to a sealing the electrode in a battery case, a positive electrode contains Co and/or cobalt oxides having a oxidation potential lower than that of nickel hydroxide and a negative electrode is not subjected to a sufficient precharge as required for the substantial battery capacity to be limited by the capacity of the positive electrode. And a battery is sealed at this state, and at an initial charge, said cobalt and/or cobalt oxides are charged and a precharged section absorbed hydrogen is formed in a negative electrode corresponding to the charge capacity of said cobalt and/or cobalt oxides.