| 摘要 |
PURPOSE:To suppress inactivity in the vicinity of surface of zinc electrode due to shortage of electrolyte and to prevent elution of active substance by forming the active substance layer with the surface layer and internal layer, causing both layers to include the wetting agent and the surface layer to include said moistening agent in the higher rate than that of internal layer. CONSTITUTION:Water is added to mixed powder consisting of zinc oxide powder, metal zinc powder, mercury oxide, silicon oxide, for example, as the wetting agent and a binding agent and these are kneaded and is then rolled into a sheet A by a roller. In the same way, a rate of inclusion of the wetting agent is increased more than that in the sheet A and the active substance is reduced as much as increment of the wetting agent to form a sheet B. The sheet A and sheet B are stacked in both sides of a collector material and adhered. Thereafter, these are pressurized for molding and is then dried. The zinc electrode 1 may be obtained by providing the internal layer 2 consisting of the sheet A and the surface layer 3 consisting of the sheet B to the surface. Thereby, the inclusion property of electrolyte in the vicinity of the surface of zinc electrode which may easily generate shortage of electrolyte and resultant inactivity may be improved and elution of active substance due to reduction in amount of active substance within the zinc electrode and inclusion in large amount of electrolyte may be prevented. |
