| 摘要 |
PURPOSE:To enhance the charge and discharge reversibility of a silver-oxide secondary battery, and increase the overcharge resisting performance of the battery by adding flake graphite to granular argentous oxide with an adjusted grain diameter, and subjecting the above mixture to press molding so as to obtain a positive mixture with a given porosity. CONSTITUTION:A silver salt and an alkali metal hydroxide, after geing dissolved into water, are made to react with one another so as to produce argentous oxide grains with a mean diameter of 0.01-0.5mum. 100pts.wt. Thus produced micro granular argentous oxide is added with 0.1-1.5pts.wt. flake graphite, and the mixture is pressed and molded with a pressure of below 2t/cm<2> so as to make a positive mixture with a porosity of below 20vol%. Thus made positive mixture is used in assembling a secondary silver-oxide battery. By the means mentioned above, the argentous oxide layer can be made thin, the charging quantity of the battery is increased, and the charge and discharge reversibility of the battery is enhanced. Besides, since hydrogen gas generated during the time of overcharge is well consumed owing to a large surface activity of the argentous oxide layer, the amount of hydrogen gas accumulated in the battery is decreased, and the overcharge resisting performance of the battery is increased. |
