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Volume 41 Issue 11
Nov.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(11): 2158-2165.
YANG Yang, XU Di, WU Qingyong, et al. Preparation of layered MoS2/Graphene films and their electrocatalytic performance of hydrogen generation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(11): 2158-2165. doi: 10.13700/j.bh.1001-5965.2014.0709(in Chinese)
Citation: YANG Yang, XU Di, WU Qingyong, et al. Preparation of layered MoS2/Graphene films and their electrocatalytic performance of hydrogen generation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(11): 2158-2165. doi: 10.13700/j.bh.1001-5965.2014.0709(in Chinese)
shu

Preparation of layered MoS2/Graphene films and their electrocatalytic performance of hydrogen generation

doi: 10.13700/j.bh.1001-5965.2014.0709

  • School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 17 Nov 2014
  • Rev Recd Date: 18 Dec 2014
  • Publish Date: 20 Nov 2015
    Abstract
  • MoS2/Graphene electrocatalysts which were used for water-electrolytic hydrogen making were synthesized using a hydrothermal method among which NH2CSNH2(thiourea) was served as both the source of sulfur and the reductive agent. MoS2/Graphene films prepared on fluorine-doped tin oxide (FTO) by spin coating method were applied for performance test of electrocatalytic water splitting. The study shows that the activity of MoS2 toward hydrogen evolution reaction improves as high as nearly 100% after coupling with graphene. The high catalytic activity of MoS2/Graphene was attributed to two aspects:firstly, the selective growth of layered MoS2 on graphene through chemical coupling afforded an abundance of catalytic active sites on MoS2 edges. Secondly, as a good conductive substrate, the graphene sheets can accelerate the electron transfer. The 12 layered MoS2/Graphene catalysts achieved the highest efficiency toward hydrogen evolution reaction with a current density up to -4.5 mA/cm2 at the overpotential of 0.2 V and an onset potential of 0.085 V in 0.5 mol/L H2SO4 solution. Hence, as a substitute for Pt family noble metal toward hydrogen evolution reaction, the layered MoS2/Graphene has broad application prospects.

     

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