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Article Navigation >  Green Energy&Environment  > 2017  >  2(2): 134-141
Canbin Ouyang, Shi Feng, Jia Huo, Shuangyin Wang. Three-dimensional hierarchical MoS2/CoS2 heterostructure arrays for highly efficient electrocatalytic hydrogen evolution. Green Energy&Environment, 2017, 2(2): 134-141. doi: 10.1016/j.gee.2017.01.004
Citation: Canbin Ouyang, Shi Feng, Jia Huo, Shuangyin Wang. Three-dimensional hierarchical MoS2/CoS2 heterostructure arrays for highly efficient electrocatalytic hydrogen evolution. Green Energy&Environment, 2017, 2(2): 134-141. doi: 10.1016/j.gee.2017.01.004
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Three-dimensional hierarchical MoS2/CoS2 heterostructure arrays for highly efficient electrocatalytic hydrogen evolution

doi: 10.1016/j.gee.2017.01.004

  • State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China

More Information
  • Corresponding author: E-mail address: jiahuo@hnu.edu.cn (Jia Huo); E-mail address: shuangyinwang@hnu.edu.cn (Shuangyin Wang)
  • Received date 30 December 2016, Accepted date 22 January 2017, RevRecd date 21 January 2017, Available online 29 January 2017, Publish date 30 April 2017,
    Abstract
  • Developing non-expensive, highly active and highly stable electrocatalysts for hydrogen evolution has aroused extensive attention, owing to the necessity of novel clean and sustainable energy carriers. In this paper, we report a synthesis of free-standing three-dimensional hierarchical MoS2/CoS2 heterostructure arrays through a convenient process. The investigation of electrocatalytic HER performance suggests that the MoS2/CoS2 hybrid catalyst exhibits significant enhancement in HER (onsetpotential and potential at a current density of 100 mA cm−2 are 20 mV and 125 mV, respectively) and superior durability (no shift of current density is observed after a continuous scanning of 3000 times) compared with individual CoS2 and MoS2. The superior HER performance was attributed to the formation of the interface between CoS2 and MoS2 through the electrochemical characterization, Raman, XPS analysis, and the control experiment. The lower onsetpotential, higher current density, excellent durability, and the free-standing structure of the three-dimensional hierarchical MoS2/CoS2 heterostructure array make it a promising cathode catalyst suitable for widespread application.

     

    • These authors contributed equally to this work.
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