【摘 要】
：
In the industry,cheap and stable electrocatalysts are eagerly expected for hydrogen evolution reaction (HER) at a high current density.Two-component electrochemical catalysts with integrated multiple interfaces seem to be an expedient strategy to enhance
【机 构】
：
CAS Key Laboratory of Design and Assembly of Functional Nanostructures,and Fujian Provincial Key Lab
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In the industry,cheap and stable electrocatalysts are eagerly expected for hydrogen evolution reaction (HER) at a high current density.Two-component electrochemical catalysts with integrated multiple interfaces seem to be an expedient strategy to enhance the inherent electronic structure of hybrid electrocatalysts and optimize the catalytic ability.In this work,we report an active tungsten carbide and nickel hydroxide(WC/Ni(OH)2) electrocatalyst seamlessly synthesized on the substrate of W foil.Ni(OH)2 trends to adsorb OHad and WC can effectively adsorb Had.Prompted by the synergistic effect,the ability of the catalyst manifests an effective HER kinetics with an overpotential of 475 mV (vs.RHE) at a high current density of 1000 mA/cm2 in 1 M KOH.Moreover,due to its self-supported construction,the catalyst presents reliable long-term stability with no obvious active property loss after 8000 cycles and 50 hours of operation in an alkaline solution.
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