Honeycomb-like MoCo alloy on 3D nitrogen-doped porous graphene for efficient hydrogen evolution reaction

Lin-Ping Wang ¹Kuang Li ¹Hua-Long Ding ¹Le Xu ²Chen Huang ¹Jiao-Jiao Zhou ²Cong-Tao Wen ³Pei-Lin Zhang ¹Wei-Wei Wang ¹Lu-Yang Chen¹

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作者信息

1. 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
2. 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
3. State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China
折叠

Abstract

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 words

MoCo alloy/Three-dimensional nitrogen-doped porous graphene/Hydrogen evolution reaction(HER)

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基金项目

National Natural Science Foundation of China(52272296)

National Natural Science Foundation of China(51502092)

Fundamental Research Funds for the Central Universities(JKD01211601)

Fundamental Research Funds for the Central Universities(1222201718002)

National Overseas High-Level Talent Youth Program in China and the Eastern Scholar Project of Shanghai()

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量55

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