A new approach was developed for designing electrocatalysts for hydrogen oxidation reaction in fuel cells. These electrocatalysts consist of Pd (adsorbed spontaneously H2 gas)-based alloy materials. The correlation of the volcano types were achieved for the first time between the catalytic activity (represented by exchange current density) and the d-band center measured by high-resolution x-ray photoemission spectroscopy (HR-XPS) or d-band vacancy measured by in situ x-ray absorption near edge spectroscopy (XANES). The most promising electrocatalysts based Pd was affected by Pd spontaneously absorbed hydrogen. In this manner, we have demonstrated an HOR electrocatalyst that does not contain Pt but can better the activity of pure Pt.

Pd-Ir alloy electrocatalysts for hydrogen oxidation reaction in fuel cells

244th National Meeting (2012)

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