期刊
ACS CATALYSIS
卷 8, 期 6, 页码 5062-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b00949
关键词
electrocatalysis; hydrogen evolution reaction; electroconductibility; intrinsic activity; nanostructure
资金
- National Natural Science Foundation of China [51671087, 11504303]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51621001]
- Foundation for Research Groups of the Natural Science Foundation of Guangdong Province [2016A030312011]
- Special Support Plan for National 10000-talents Program
The design and synthesis of high-performance hydrogen evolution reaction (HER) catalysts requires an overall consideration of intrinsic activity and number of active sites as well as electric conductivity. We herein report a facile synthesis of a cost-effective catalyst that can simultaneously address these key issues. A cobalt molybdenum oxide hydrate (CoMoO4 center dot nH(2)O) with a 3D hierarchical nanostructure can be readily grown on nickel foam using a hydrothermal method. Calcination treatment of this precursor material under a reductive atmosphere resulted in the formation of Co nanoparticles on the Co2Mo3O8 surface, which worked in concert to act as active sites for the HER. In addition, the resulting Co2Mo3O8 from the dehydration and reduction reactions of CoMoO4 center dot nH(2)O showed remarkable increases in both active surface area and electrical conductivity. As a consequence of these favorable attributes, the catalyst exhibited electrocatalytic performance comparable to that of the commercial Pt/C catalyst for the HER in alkaline solution, which is promising for practical water-splitting applications.
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