Journal
ELECTROCHIMICA ACTA
Volume 292, Issue -, Pages 407-418Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.09.160
Keywords
HER; MoS2; N-doped graphite foam; Epitaxial growth
Categories
Funding
- Young Scientists Fund of the National Natural Science Foundation of China [11404314]
- Anhui Provincial Natural Science Foundation [1708085MA06]
- Chongqing Natural Science Foundation [cstc2016shmszx20002, cstc2017jcyjA1821]
- Scientific and Technological Research Program of Chongqing Municipal Education Commission [KJ1711272]
- Chongqing university outstanding achievement transformation projects [KJZH17130]
- Undergraduate innovation and entrepreneurship training program [201510642002]
Ask authors/readers for more resources
Hydrogen evolution reaction (HER) electrocatalysts are crucial to the application of renewable energy. In this study, the interactive MoS2 nanosheets uniformly grown on nitrogen-doped graphite foam (MoS2/NGF) are obtained via a facile solvothermal synthesis method. The resulting MoS2/NGF shows excellent catalytic activity for HER performance, which exhibits low onset potential of 12 mV versus reversible hydrogen electrode (RHE), low overpotential of 35 mV at 10 mA cm(-2), and outstanding stability over 3000 cycles under acidic conditions. The results reveal that mixture of different oxidation degrees of the graphite foam bring in surface defects, which promote the epitaxial growth of MoS2 nanosheets on the outer graphene layer with more defects. These defects induce a synergistic effect and contribute to the HER process. Further experiments on the effect of oxidation degree of graphite foam on the HER performance for the MoS2/NGF composites confirmed that there is an optimum condition for the catalytic activity of HER due to the internal conductive channels provided by graphite foam. The HER performance of MoS2/NGF is superior to most of the reported MoS2-based catalysts, especially its onset potential and the exchange current density. (C) 2018 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available