| 摘要 |
PURPOSE:To make the diameter of pores larger and to increase the filling amount of an active material, by mixing and kneading a metallic fiber, the water, an organic paste material, and a pore forming agent of an organic resin to make into a slurry, then spreading the slurry to a conductive core body and sintering to make an electrode base body, and filling the active material to the base body. CONSTITUTION:To a nickel fiber of 100 pts. wt., styrene foam as a pore forming agent of an organic resin of 20 pts. wt. and some water are added, and kneaded evenly. After that, carboxymethylcellulose as an organic paste material is added to make into a slurry. The slurry is spread on a punching metal conductive core body with a nickel plating, dried and then sintered. The porousness of the resultant electrode base body is as high as 94 % including the conductive core body, and the diameter of the pores is 140 to 180 mum. To such an electrode base body, an active substance paste of a kneaded mixture of nickel hydroxide as an active substance, the water, and polyvinylalcohol as an organic paste material is spread and filled. In such a way, the porousness is further improved, the filling amount of the active substance is increased, and the mass productivity can be improved. |
