| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas diffusion electrode which is low in oxygen reduction pressure in the electrolyzing application of water or an alkali metal chloride water solution, to provide a method for producing the same, and to provide an electrolyzing method. <P>SOLUTION: The blending ratio between a silver catalyst and a conductive carrier is optimized, and the porosity in the electrode is increased. Concretely, in a gas diffusion electrode C using a conductive base material, a silver catalyst, a conductive carrier and a fluorine-containing resin, the gas diffusion electrode C in which the weight ratio of the silver catalyst/(the silver catalyst+the conductive carrier) lies in the range of 0.03 to 0.95, and also the porosity of the ones with the pore diameter of 0.01 to 10 μm is ≥55% is obtained by dispersing the silver catalyst, the conductive carrier and the fluorine-containing resin into a surfactant water solution, mixing them, and subjecting the mixture to solid-liquid separation so as to be powder, and performing molding and firing. <P>COPYRIGHT: (C)2010,JPO&INPIT |
