| 摘要 |
PURPOSE:To increase absorption capability of the captioned electrode plate and strength thereof by providing a conductive layer make of carbon powder on the surface of a pasty active material layer mainly composed of a cadmium active material with which an electrode core body is coated, and thereafter charging said layer with quantity of electricity less than specific % of electrode plate capacity. CONSTITUTION:An electrode core body 2 is coated with paste 1 yielded by mixing cadmium oxide and a binder, etc., and dried, and thereby a paste type cadmium electrode plate is formed. The electrode plate is dipped in a conductive coating material, dried, and thereby an electrode plate including a thin carbon powder layer 3 on its surface is made, pressed and formed. The resultant elec- trode plate is forced to pass through a forming device, charged with quantity of electricity less than 60% of electrode plate capacity, washed and dried to obtain a finished electrode plate. A negative electrode plate constructed in such a way can allow metallic cadmium to exist on its surface even if the amount of charging for formation is small, improving its capability of absorbing oxigen gas for economical use thereof. |
