| 摘要 |
PURPOSE:To facilitate high efficiency discharge and to obtain high electric capacity by coating surfaces of silver oxide, which serves as an active material, with a small amount of gold so as to form powder and compressing/molding this powder to compose a positive electrode. CONSTITUTION:A surface of silver oxide is coated with gold so as to form powder and this powder is compressed/molded to form positive electrode pellets 1. The pellets 1 are inserted into a positive electrode case 2 and they are compressed/molded together with a positive ring 3 so as to compose a positive electrode. Next, a negative electrode is composed as follows: a negative electrode case 5 is filled with negative electrode mixtures 4 which are formed by mixing 5 wt% of polyacrylic soda with zinc amalgamate powder, and alkaline electrolytic solution formed by dissolving 5 wt% of zinc oxide with 10 mol/l aqueous solution of potassium hydroxide is poured into these negative electrode mixtures, and a separator 6 made of a porous polyethylene film and an impregnated material 7 of nylon non-fabric are inserted there. The positive electrode pellets are formed by coating surfaces of silver oxide with 0.3 wt part of gold per 100 wt part of silver oxide by a chemical plating method. Thus, high efficiency discharge characteristics can be satisfied and high electric capacity can be obtained. |
