Journal
RESEARCH
Volume 2019, Issue -, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.34133/2019/6439734
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Funding
- MOE [ARC 19/15, MOE2014-T2-2-093, MOE2015-T2-2-057, MOE2016-T2-2-103, MOE2017-T2-1-162, 2016-T1-001-147, 2016-T1-002-051, 2017-T1-001-150, 2017-T1-002-119]
- Nanyang Technological University in Singapore [M4081296.070.500000]
- Fundamental Research Funds for the Central Universities in China [PA2018GDQT0013]
- Innovation and Technology Commission via the Hong Kong Branch of National Precious Metals Material Engineering Research Center
- City University of Hong Kong
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The layered transition metal dichalcogenides (TMDs) and transition metal phosphides are low-cost, earth-abundant, and robust electrocatalysts for hydrogen evolution reaction (HER). Integrating them into hybrid nanostructures is potentially promising to further boost the catalytic activity toward HER based on their synergistic effects. Herein, we report a general method for the synthesis of a series of MoSe2-based hybrid nanostructures, including MoSe2-Ni2P, MoSe2-Co2P, MoSe2-Ni, MoSe2-Co, and MoSe2-NiS, by postgrowth of Ni2P, Co2P, Ni, Co, and NiS nanostructures on the presynthesized MoSe2 nanosheet-assembled nanospheres, respectively, via a colloidal synthesis method. As a proof-of-concept application, the as-synthesized hybrid nanostructures are used as electrocatalysts for HER, exhibiting high activity and stability in acidic media. Among them, the MoSe2-Co2P composite shows the highest HER activity with an overpotential of 167 mV at 10 mA cm(-2).
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