Abstract
AbstractDeveloping Pt‐free catalysts for hydrogen oxidation reaction (HOR) in alkaline solution is becoming a key challenge in the development of anion exchange membrane fuel cells and electrochemical reactors. Herein, we present the preparation, HOR activity, and stability of Pd‐decorated tungsten (Pd‐d‐W) catalysts. The Pd‐d‐W catalysts were prepared by the chemically activated surface of tungsten nanoparticles by Pd ions. The resultant bimetallic catalysts consisted of crystalline phases of both Pd and W nanoparticles. The CO stripping voltammograms and H‐desorption (Hdes) peak potential of hydrogen desorption in Pd suggests that the enhancement of HOR catalytic activity observed in Pd‐d‐W catalyst can be ascribed to the modification of electronic property of Pd and availability of OHad near‐surface Pd atoms.
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