Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution

doi:10.1039/d1ta01560e

IMR OpenIR

	Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution
	Liu, Huan 1,2,3,6; Wu, Zi-Shan 2,3; Huang, Ling 2,3; Zhang, Bo-Wei 2,3; Yin, Li-Chang 4; Xu, Cheng-Yan 1,5; Zhen, Liang 1,5
通讯作者	Yin, Li-Chang(lcyin@imr.ac.cn) ; Xu, Cheng-Yan(cy_xu@hit.edu.cn) ; Zhen, Liang(lzhen@hit.edu.cn)
	2021-04-12
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
页码	8
摘要	Understanding the limitations of electrocatalytic activity and developing advanced catalysts with enhanced activity are of exceptional importance for future hydrogen energy applications. Due to the complexity of electrolytic hydrogen evolution in alkaline media, there are limited non-noble metal catalysts to afford large scale applications. Tungsten-based catalysts exhibit favorable stability but relatively low activity owing to their strong H* adsorption characteristics. In this work, cobalt hydroxides/cubic phase WN nanoparticles with strengthened interfaces and adjustable nitrogen vacancies anchored on multi-walled carbon nanotubes (Co(OH)(2)/c-WN1-x/CNTs) are exploited as highly efficient alkaline hydrogen evolution electrocatalysts, which exhibit remarkable activity with an overpotential of 78 mV at 10 mA cm(-2) and a low Tafel slope of 43 mV dec(-1) in 1 M KOH media. Density-functional theory calculations revealed that the interfacial combinations of Co(OH)(2)/c-WN1-x were tuned to facilitate the kinetics of hydrogen evolution, where Co(OH)(2) promoted the adsorption of water molecules and the H-OH dissociation, and cubic phase WN with nitrogen vacancies (c-WN1-x) accelerated hydrogen generation by optimizing the hydrogen adsorption free energy.
资助者	National Natural Science Foundation of China ; Shenzhen Science and Technology Innovation Committee ; China Scholarship Council (CSC)
DOI	10.1039/d1ta01560e
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51972312] ; National Natural Science Foundation of China[51472249] ; Shenzhen Science and Technology Innovation Committee[JCYJ20200109113212238] ; China Scholarship Council (CSC)
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000644930500001
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/162025
专题	中国科学院金属研究所
通讯作者	Yin, Li-Chang; Xu, Cheng-Yan; Zhen, Liang
作者单位	1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 2.Yale Univ, Dept Chem, West Haven, CT 06516 USA 3.Yale Univ, Energy Sci Inst, West Haven, CT 06516 USA 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Harbin Inst Technol, Sch Mat Sci & Engn, Sauvage Lab Smart Mat, Shenzhen 518055, Peoples R China 6.Inner Mongolia Univ Technol, Coll Chem Engn, Hohhot 010051, Peoples R China
推荐引用方式 GB/T 7714	Liu, Huan,Wu, Zi-Shan,Huang, Ling,et al. Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution[J]. JOURNAL OF MATERIALS CHEMISTRY A,2021:8.
APA	Liu, Huan.,Wu, Zi-Shan.,Huang, Ling.,Zhang, Bo-Wei.,Yin, Li-Chang.,...&Zhen, Liang.(2021).Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution.JOURNAL OF MATERIALS CHEMISTRY A,8.
MLA	Liu, Huan,et al."Mechanistic insights into interfaces and nitrogen vacancies in cobalt hydroxide/tungsten nitride catalysts to enhance alkaline hydrogen evolution".JOURNAL OF MATERIALS CHEMISTRY A (2021):8.