首页|Honeycomb-like MoCo alloy on 3D nitrogen-doped porous graphene for efficient hydrogen evolution reaction
Honeycomb-like MoCo alloy on 3D nitrogen-doped porous graphene for efficient hydrogen evolution reaction
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An efficient electrocatalyst is indispensable to significantly reduce energy consumption and accelerate the conversion efficiency of water splitting.In this work,the honeycomb-like porous MoCo alloy on nitrogen-doped three-dimensional(3D)porous graphene substrate(Mo0.3Co0.7@NPG)has been synthesized from the annealing of layered double hydroxide(MoCo-LDH@NPG).Especially,the Mo0.3Co0.7@NPG exhibits low hydrogen evolution overpotential of 75 mV(10 mA.cmr-2)and a Tafel slope of 69.9 mV·dec-1,which can be attributed to highly conductive NPG substrate,the unique nanostructure and the synergistic effect of Mo and Co.Moreover,the Mo0.3Co0.7@NPG can maintain the original morphology and high catalytic activity after 50-h stability test.This work proposes a general strategy to synthesize a multi-element alloy on conductive substrates with high porosity for electrocatalytic reaction.
Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China
State Key Laboratory of High-Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics Chinese Academy of Sciences,Shanghai 200050,China
State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesNational Overseas High-Level Talent Youth Program in China and the Eastern Scholar Project of Shanghai
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