期刊
ELECTROCHIMICA ACTA
卷 219, 期 -, 页码 781-789出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.055
关键词
Hydrogen evolution reaction; Heteroatoms co-doping; Plasma-etching; Defect engineering
资金
- Engineering Technology Research Center of Population Health Informatization in Hebei Province
- Application Technology Research and Development Center of Medical Informatics in Hebei Universities
- Science and Technology Department of Hebei Province Project [16961301D]
- Health Department of Hebei Province [20160030]
Development of efficient and metal-free electrocatalysts toward hydrogen evolution reaction (HER) is of great significance for the renewable energy conversion and storage technologies. Heteroatom doping, especially two heteroatoms co-doping, is one of the most effective strategies to improve the catalytic activity of carbon-based electrocatalysts. Here, we reported that the plasma-etching could produce additional structural defects on N, S co-doped graphene (NSG), which further improved the HER activity of NSG. It was demonstrated that the synergetic coupling effect of N, S co-doping and plasma-induced structural defects could maximize the number of exposed active sites and significantly enhance the HER activity of graphene in both acidic and alkaline media. This study thus indicates that combining defect engineering with heteroatoms co-doping is an efficient strategy for dramatically improving the HER activity of graphene. (C) 2016 Elsevier Ltd. All rights reserved.
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