A process for the preparation of a silver containing positive electrode for alkaline accumulators

摘要

746,578. Batteries. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. July 26, 1954 [July 24, 1953], No. 21774/54. Class 53. A porous electrode consists of a sintered mixture of finely-divided nickel or other metal not affected by the electrolyte and finely divided silver or a silver compound such as the oxide which is reduced to silver by sintering. The mixture of the two powders is deposited on both sides of a perforated nickel-plated sheet or on a grid of nickel-plated steel or copper wires welded to a nickel-plated steel frame and the whole heated at 800‹ C. in a reducing atmosphere. The mixture may be slightly compressed before or during the sintering process. The electrode may be used in a battery having an alkaline hydroxide electrolyte and a negative electrode of iron, cadmium, zinc, magnesium or other metal.