| 摘要 |
PURPOSE:To stabilize the voltage of the captioned battery during discharge for a long period of time, and thereby to lengthen the repeated life during charge and discharge, by rendering the electrolytic solution of an alkaline secondary battery to be the aqueous solution of alkalie metal hydroxide and by using as the negative electrode a carbon material which is graphitization-resisting and has molecular sieving action. CONSTITUTION:A graphitization-resisting carbon material treated below 1,500 deg.C is used for the negative electrode of an alkaline secondary battery. This carbon material shall be a carbon fiber-like material of low elasticity whose specific surface area value by nitrogen absorption is preferred to be less than 1m<2>/g and whose specific surface area value by carbon dioxide absorption is preferred to be more than 100m<2>/g. And also, alkali metal hydroxides belonging to familyIsuch as aqueous potassium hydroxide solution are used for the electrolytic solution. Due to the secondary battery of this structure, the voltage during discharge is stabilized for a long period of time. And the repeated life during charge and discharge is enhanced. |
