Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media

doi:10.1039/d1ee01487k

CORC > 金属研究所 > 中国科学院金属研究所

	Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media
	Luo, Yuting 1,3; Zhang, Zhiyuan 1,3; Yang, Fengning 1,3; Li, Jiong 4; Liu, Zhibo 2; Ren, Wencai 2; Zhang, Shuo 4; Liu, Bilu 1,3
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2021-07-06
页码	10
ISSN号	1754-5692
DOI	10.1039/d1ee01487k
通讯作者	Zhang, Shuo(zhangshuo@sinap.ac.cn) ; Liu, Bilu(bilu.liu@sz.tsinghua.edu.cn)
英文摘要	Large-scale production of green hydrogen by electrochemical water splitting is considered as a promising technology to address critical energy challenges caused by the extensive use of fossil fuels. Although nonprecious nickel-based catalysts work well at low current densities, they need large overpotentials at high current densities, which hinders their wide applications in practical industry. Here we report a hydroxide-mediated nickel-based electrocatalyst for high-current-density hydrogen evolution, which delivers a current density of 1000 mA cm(-2) at an ultralow overpotential of 97 mV. Combined X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS) results show charge redistribution of Ni sites caused by Mo and surface Fe, which can stabilize the surface nickel hydroxide at high current densities for promoting the water dissociation step. Combined in situ XAS, quasi in situ XPS, and density functional theory calculations indicate that Fe plays an important role in the improved catalytic activity. Such a catalyst is synthesized at the metre-size scale and delivers a current density of 500 mA cm(-2) at 1.56 V in overall water splitting, demonstrating its potential for practical use. This work highlights a charge engineering strategy to design efficient catalysts for high current density electrochemical applications.
资助项目	National Natural Science Foundation of China[51722206] ; National Natural Science Foundation of China[51920105002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C341] ; Bureau of Industry and Information Technology of Shenzhen[201901171523] ; Shenzhen Basic Research Project[JCYJ20200109144620815] ; Youth 1000-Talent Program of China
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000678047600001
资助机构	National Natural Science Foundation of China ; Guangdong Innovative and Entrepreneurial Research Team Program ; Bureau of Industry and Information Technology of Shenzhen ; Shenzhen Basic Research Project ; Youth 1000-Talent Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159670]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Shuo; Liu, Bilu
作者单位	1.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Inst Mat Res, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yuting,Zhang, Zhiyuan,Yang, Fengning,et al. Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media[J]. ENERGY & ENVIRONMENTAL SCIENCE,2021:10.
APA	Luo, Yuting.,Zhang, Zhiyuan.,Yang, Fengning.,Li, Jiong.,Liu, Zhibo.,...&Liu, Bilu.(2021).Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media.ENERGY & ENVIRONMENTAL SCIENCE,10.
MLA	Luo, Yuting,et al."Stabilized hydroxide-mediated nickel-based electrocatalysts for high-current-density hydrogen evolution in alkaline media".ENERGY & ENVIRONMENTAL SCIENCE (2021):10.