Journal
APPLIED SURFACE SCIENCE
Volume 428, Issue -, Pages 1046-1055Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.09.250
Keywords
Ni3S4/MoS2@N-rGO; Hydrothermal co-synthesis; Catalysts; HER
Categories
Funding
- National Natural Science Foundation of China [11474151, 11774156]
- National Key Project for Basic Research [2012CB932304]
- PAPD, People's Republic of China
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Hydrogen evolution reaction (HER) through water splitting at low overpotential is an appealing technology to produce renewable energy, wherein the design of stable electrocatalysts is very critical. To achieve optimal electrochemical performance, a highly efficient and stable noble-metal-free HER catalyst is synthesized by means of a facile hydrothermal co-synthesis. It consists of Ni3S4 nanosheets and MoS2 nanolayers supported on N-doped reduced graphene oxide (Ni3S4/MoS2@N-rGO). The optimized sample provides a large amount of active sites that benefit electron transfer in 3D conductive networks. Thanks to the strong synergistic effect in the catalyst network, we achieved a low overpotential of 94 mV, a small Tafel slope of 56 mV/dec and remarkable durability in an acidic medium. (c) 2017 Elsevier B.V. All rights reserved.
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