期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 15, 页码 4923-4928出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814262
关键词
cobalt; hydrogen evolution reaction; oxygen evolution reaction; heterointerfaces; molybdenum
资金
- National Natural Science Foundation of China [21875048, 21576056, 21576057]
- Guangdong Natural Science Foundation [2017A030311016, 2018A030310339]
- Science and Technology Research Project of Guangdong Province [2016A010103043]
- Major Scientific Project of Guangdong University [2017KZDXM059]
- Yangcheng Scholars Research Project of Guangzhou [201831820]
- Science and Technology Research Project of Guangzhou [201607010232]
- Guangzhou University [BJ201704]
Herein, we demonstrate the use of heterostructures comprised of Co/beta-Mo2C@N-CNT hybrids for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in an alkaline electrolyte. The Co can not only create a well-defined heterointerface with beta-Mo2C but also overcomes the poor OER activity of beta-Mo2C, thus leading to enhanced electrocatalytic activity for HER and OER. DFT calculations further proved that cooperation between the N-CNTs, Co, and beta-Mo2C results in lower energy barriers of intermediates and thus greatly enhances the HER and OER performance. This study not only provides a simple strategy for the construction of heterostructures with nonprecious metals, but also provides in-depth insight into the HER and OER mechanism in alkaline solution.
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