| 摘要 |
PURPOSE:To increase oxygen gas absorption capability and suppress hydrogen gas evolution by forming a paste type cadmium anode by coating a substrate obtained by covering the surface of metal base with indium with a thin layer of the mixture of active material and carbon powder. CONSTITUTION:A substrate formed by covering a metal base such as punched metal with a indium layer by plating is coated with a paste-like active material prepared by adding polyethylene fibers to a mixture of cadmium oxide powder and metallic cadmium, and dried. The coated substrate is immersed in a suspension of acetylene black for example, and dried. Thereby, a carbon powder thin layer is formed on the active material layer, and a cadmium anode used for an alkaline storage battery such as nickel-cadmium battery is formed. Since hydrogen overvoltage of indium is large, hydrogen evolution is suppressed, and since metallic cadmium is formed in an early stage by existing of the carbon powder thin layer, oxygen gas absorption capability is increased. |
