Effect of the Synthetic Method on the Properties of Ni-Based Hydrogen Oxidation Catalysts.

ABSTRACT: The latest progress in alkaline anion-exchange membranes has led to the expectation that less costly catalysts than those of the platinum-group metals may be used in anion-exchange membrane fuel cell devices. In this work, we compare structural properties and the catalytic activity for the hydrogen-oxidation reaction (HOR) for carbon-supported nanoparticles of Ni, Ni₃Co, Ni₃Cu, and Ni₃Fe, synthesized by chemical and solvothermal reduction of metal precursors. The catalysts are well dispersed on the carbon support, with particle diameter in the order of 10 nm, and covered by a layer of oxides and hydroxides. The activity for the HOR was assessed by voltammetry in hydrogen-saturated aqueous solutions of 0.1 mol dm^-1 KOH. A substantial activation by

SUBMITTER: Davydova ES 

PROVIDER: S-EPMC8153405 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature