Abstract

Mesoporous nickel phosphide (Ni-P) nanocatalysts have been synthesized via a facile solvothermal strategy and used for urea electrooxidation in alkaline medium. The physicochemical properties and electrocatalytic performances have been investigated. Due to the structural effect and electronic effect, the Ni-P nanocatalysts achieve a lower overpotential, higher activity and better stability compared with the Ni nanocatalysts. Therefore, an onset oxidation potential of 1.37V (vs. RHE), a peak current density of 70mAcm−2 and a good current retention of 58% for 1000s at 1.52V have been achieved by the Ni-P nanocatalysts, which show enhanced performance compared to the Ni nanocatalysts (1.42V, 62mAcm−2, 39% retention), indicating a promising application of the mesoporous Ni-P nanocatalysts towards alkaline urea electrooxidation.

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