| 摘要 |
PURPOSE:To obtain an alkaline manganese battery having excellent discharge characteristic and liquid-leakage resistant characteristic by pressing and granulating mixture consisting of manganese dioxide and a part of a necesary amount of flake graphite used as a condctivity-giving material, then mixing the remaining part of the conductivity-giving material into the granulated mixture so as to obtain a positive mixture. CONSTITUTION:In making a positive mixture 1, after mixture prepared by mixing manganese dioxide with a part of a necessary amount of flake graphite used as a conductivity-giving material is pressed and rolled before being crushed, the crushed mixture is sieved through meshes of around 600 microns for example and granulated. Next, after the other part of the conductivity-giving material is mixed into the granulated positive mixture, the mixture is weighed by a measure method before being pressed and molded thereby preparing a positive pellet. In constituting a battery, for example, after the positive pellet is placed in a positive case 2 made of nickel-plated iron, a positive ring 3 is inserted in the positive case 2 before pressure molding is performed with a given pressure thereby making a molded positive electrode 1. Following that, a separating layer 4 and a negative electrode 7 are installed over the positive electrode 1, then the positive case 2 is sealed by the conventional method. |
