Influence of Mo/P Ratio on CoMoP nanoparticles as highly efficient HER catalysts
2016
Abstract Uniform unsupported Co-promoted MoP catalysts for the hydrogen evolution reaction (HER) were synthesized via a facile temperature-programmed reduction (TPR) of the corresponding metal phosphate salts, and the effect of Mo/P ratio was also investigated. It is found that the Mo/P ratio plays a crucial role in the final HER activity, and the CoMoP catalyst with a Mo/P molar ratio of 1:2 exhibits the best HER activity with a small Tafel slope of 50 mV per decade and a very low onset potential of −85 mV in 0.5 M H 2 SO 4 .
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