| 摘要 |
PURPOSE:To improve the cycle life by placing a zinc electrode on the inner bottom of a battery can and filling the space between the external side surface of the zinc electrode and the inner side surface of the battery can with calcium hydroxide. CONSTITUTION:100 weight parts of zinc oxide powder and 10 weight parts of metal zinc powder serving as active materials, 5 weight parts of mercuric oxide as an additive and 5 weight parts of fluorocarbon resin dispersion as a binding agent are mixed with water and kneaded, made into sheet shape with a roller, punched into a disk and dried to make a zinc electrode 9. The surface of the zin electrode 9 is coated (8b) with calcium hydroxide, dried and inserted into a battery can 4. The space between the inner side surface of the battery can 4 and the external side surface of the zinc electrode 9 is filled (8a) with calcium hydroxide. A positive electrode made by punching a sintered nickel electrode 3 into a disk is placed on the zinc electrode. The battery can is filled with a specified quantity of electrolytic solution and is sealed to make a battery. By this constitution, generation of dendrite from the edge of the zinc electrode external side surface and deformation of the edge of the zinc electrode 9 can be suppressed, and a battery of excellent cycle characteristic can be obtained. |
