Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 44, Issue 13, Pages 6573-6581Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.01.200
Keywords
Flower-like MoS2; Hydrogen and oxygen evolution; Overpotential; Durability
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Funding
- National Key R&D Program of China [2018YFD0800700]
- National Natural Science Foundation of China [21776324]
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology [2018K02]
- Hundred Talent Plan from Sun Yat-sen University [201602]
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A flower-like MoS2 with a stepped edge structure was successfully and controllably fabricated as a bifunctional electrocatalyst efficient for hydrogen and oxygen evolution reactions. The hierarchically porous polycrystalline MoS2 was characterized by a combination analysis of XRD, Raman, XPS, N-2-BET, SEM and TEM. In the hydrogen evolution reaction (HER), this as-obtained MoS2/Ni catalyst presents significantly enhanced performance versus most previously studied catalysts. In the oxygen evolution reaction (OER), the electrocatalyst MoS2/Ni gives rise to a rather low overpotential of similar to 0.335 V at 20.0 mA cm(-2) and much enhanced durability over 6 h. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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