Single Tungsten Atoms Supported on MOF-Derived N-Doped Carbon for Robust Electrochemical Hydrogen Evolution

doi:10.1002/adma.201800396

	Single Tungsten Atoms Supported on MOF-Derived N-Doped Carbon for Robust Electrochemical Hydrogen Evolution
	Cheong, WC; Chen, WX; Pei, JJ; He, CT; Wan, JW; Ren, HL; Wang, Y; Dong JC(董俊才); Li, YD; Wang, DS
刊名	ADVANCED MATERIALS
	2018
卷号	30 期号:30 页码:1800396
关键词	electrocatalysts hydrogen evolution reaction metal-organic frameworks N-doped carbon single W atoms
ISSN号	0935-9648
DOI	10.1002/adma.201800396
文献子类	Article
英文摘要	Tungsten-based catalysts are promising candidates to generate hydrogen effectively. In this work, a single-W-atom catalyst supported on metal-organic framework (MOF)-derived N-doped carbon (W-SAC) for efficient electrochemical hydrogen evolution reaction (HER), with high activity and excellent stability is reported. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and X-ray absorption fine structure (XAFS) spectroscopy analysis indicate the atomic dispersion of the W species, and reveal that the W1N1C3 moiety may be the favored local structure for the W species. The W-SAC exhibits a low overpotential of 85 mV at a current density of 10 mA cm(-2) and a small Tafel slope of 53 mV dec(-1), in 0.1 m KOH solution. The HER activity of the W-SAC is almost equal to that of commercial Pt/C. Density functional theory (DFT) calculation suggests that the unique structure of the W1N1C3 moiety plays an important role in enhancing the HER performance. This work gives new insights into the investigation of efficient and practical W-based HER catalysts.
电子版国际标准刊号	1521-4095
WOS关键词	METAL-ORGANIC FRAMEWORKS ; OXYGEN REDUCTION ; CARBIDE NANOPARTICLES ; EFFICIENT ; CATALYSTS ; ELECTROCATALYST ; CONVERSION ; GRAPHENE ; SITES ; ULTRASMALL
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000439737700008
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286148]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Cheong, WC,Chen, WX,Pei, JJ,et al. Single Tungsten Atoms Supported on MOF-Derived N-Doped Carbon for Robust Electrochemical Hydrogen Evolution[J]. ADVANCED MATERIALS,2018,30(30):1800396.
APA	Cheong, WC.,Chen, WX.,Pei, JJ.,He, CT.,Wan, JW.,...&Dong, JC.(2018).Single Tungsten Atoms Supported on MOF-Derived N-Doped Carbon for Robust Electrochemical Hydrogen Evolution.ADVANCED MATERIALS,30(30),1800396.
MLA	Cheong, WC,et al."Single Tungsten Atoms Supported on MOF-Derived N-Doped Carbon for Robust Electrochemical Hydrogen Evolution".ADVANCED MATERIALS 30.30(2018):1800396.