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作者:

Hua, Shixin (Hua, Shixin.) | Qu, Dan (Qu, Dan.) | An, Li (An, Li.) | Xi, Guangcheng (Xi, Guangcheng.) | Chen, Ge (Chen, Ge.) (学者:陈戈) | Li, Fan (Li, Fan.) (学者:李钒) | Zhou, Zhijun (Zhou, Zhijun.) | Sun, Zaicheng (Sun, Zaicheng.) (学者:孙再成)

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EI Scopus SCIE PKU CSCD

摘要:

Ultrathin small MoS2 nanosheets exhibit a higher electrocatalytic activity for the hydrogen evolution reaction. However, strong interactions between MoS2 layers may result in aggregation; together with the low conductivity of MoS2, this may lower its electrocatalytic activity. In this paper we present a method that we developed to directly produce solid S, N co-doped carbon (SNC) with a graphite structure and multiple surface groups through a hydrothermal route. When Na2MoO4 was added to the reaction, polymolybdate could be anchored into the carbon materials via a chemical interaction that helps polymolybdate disperse uniformly into the SNC. After a high temperature treatment, polymolybdate transformed into MoS2 at 800 degrees C for 6 h in a N-2 atmosphere at a heating rate of 5 degrees C/min, owing to S2- being released from the SNC during the treatment (denoted as MoS2/SNC-800-6h). The SNC effectively prevents MoS2 from aggregating into large particles, and we successfully prepared highly dispersed MoS2 in the SNC matrix. Electrochemical characterizations indicate that MoS2/SNC-900-12h exhibits a low onset potential of 115 mV and a low overpotential of 237 mV at a current density of 10 mA/cm(2). Furthermore, MoS2/SNC-900-12h also had an excellent stability with only similar to 2.6% decay at a current density of 10 mA/cm(2) after 5000 test cycles. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

关键词:

Electrocatalytic hydrogen production Hydrogen evolution reaction Composite S,N co-doped carbon MoS2 nanosheet

作者机构:

  • [ 1 ] [Hua, Shixin]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 2 ] [Qu, Dan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 3 ] [An, Li]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 4 ] [Chen, Ge]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Fan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 6 ] [Sun, Zaicheng]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 7 ] [Qu, Dan]Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Jilin, Peoples R China
  • [ 8 ] [Qu, Dan]Univ Chinese Acad Sci, Beijing 100049, Peoples R China
  • [ 9 ] [Xi, Guangcheng]Chinese Acad Inspect & Quarantine, Nanomat & Nanoprod Res Ctr, Beijing 100000, Peoples R China
  • [ 10 ] [Zhou, Zhijun]China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621000, Sichuan, Peoples R China

通讯作者信息:

  • 孙再成

    [Sun, Zaicheng]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China

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来源 :

CHINESE JOURNAL OF CATALYSIS

ISSN: 0253-9837

年份: 2017

期: 6

卷: 38

页码: 1028-1037

1 6 . 5 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:212

中科院分区:2

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WoS核心集被引频次: 24

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ESI高被引论文在榜: 0 展开所有

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