| 摘要 |
PURPOSE:To obtain a cadmium electrode to secure a good electron conductivity and to have almost no cycle deterioration in the gas absorption capacity, by using an active carbon fiber processed with fluorine contained resin. CONSTITUTION:This cadmium electrode is composed of an active substance layer which consists of an active carbon fiber with fluorine contained resin attached over the surface, and an active substance which consists of mainly cadmium oxide or cadmium hydroxide and a conductive core material on whose surface the active substance layer is formed. Since the water-repelling property of the fluorine contained resin is given to the surface of the active carbon fiber in such a composition, the hydrophobic property of the active carbon fiber is improved, and wetting to the alkaline solution can be controlled adequately. Moreover, since the surface of the active carbon fiber is protected from covering with the alkaline solution owing to the repeated charge and discharge, its catalystic property can be maintained for long. Cousequently, the gas absorption capacity of the cadmium electrode in which the active substance layer of dispersed active carbon fiber is formed is not deteriorated even though the charge and discharge cycle is repeated, and the original favorable condition can be maintained for a long period of time. |
