HIGHLY ACTIVE CATALYST AND HIGHLY ACTIVE ELECTRODE MADE OF THIS CATALYST

摘要

A highly active powder catalyst with a high concentration of platinum group elements is prepared from an amorphous alloy consisting of at least one of the valve metals, at least one of the platinum group elements and at least one element selected from Ni and Co by immersion in hydrofluoric acid. A highly active electrode is prepared by mixing the above-mentioned powder catalyst with carbon black and a hydrophobic fluorocarbon polymer, coating the mixture onto a conductive substrate and baking same.