Journal
NANO ENERGY
Volume 104, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2022.107882
Keywords
Electronic structure; Hydrogen evolution reaction; Catalytic mechanism; Water splitting; Modulation strategy
Categories
Funding
- National Natural Science Foundation of China
- Key Research and Development Pro- gram of Hubei Province
- Knowledge Innovation Program of Wuhan-Shuguang Project
- City University of Hong Kong Donation Research Grant
- [52002294]
- [2021BAA208]
- [2022010801020364]
- [9229021]
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This article describes the effects and mechanism of the electronic structure on the electrocatalytic activity and discusses viable strategies to modulate the electronic configuration of electrocatalysts.
The hydrogen evolution reaction (HER) in water splitting is vital to the production of high-purity hydrogen from sustainable energy sources in order to combat climate change and environmental crises resulting from com-bustion of conventional fossil fuels. However, HER suffers from sluggish electrochemical reactions as well as expensive precious metal-based catalysts. Inexpensive transition metals and their compounds are desirable substitutes for precious-metal-based compounds for HER. Several strategies have been proposed to modulate the electronic configuration to improve the catalytic properties because the electronic structure contributes signif-icantly to the electrocatalytic activity. Herein, we describe the effects and mechanism of the electronic structure on the electrocatalytic activity and discuss viable strategies to modulate the electronic configuration of elec-trocatalysts by means of doping, vacancies, heterostructures, strain, and phase engineering. In addition, the advantages and disadvantages of each strategy as well as challenges and prospective of transition metal-based HER catalysts are discussed.
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