Double-Site Ni-W Nanosheet for Best Alkaline HER Performance at High Current Density >500 mA cm(-2)

doi:10.1002/admi.201900308

	Double-Site Ni-W Nanosheet for Best Alkaline HER Performance at High Current Density >500 mA cm(-2)
	Wu, Huan 1; Kong, Lingqiao 1; Ji, Yujin 2; Yan, Junqing 1; Ding, Yimin 2; Li, Youyong 2; Lee, Shuit-Tong 2; Liu, Shengzhong (Frank)1,3
刊名	ADVANCED MATERIALS INTERFACES
	2019-05-23
卷号	6 期号:10 页码:9
关键词	alkaline hydrogen evolution reaction (HER) electrocatalysis Ni(111) W doping water splitting
ISSN号	2196-7350
DOI	10.1002/admi.201900308
通讯作者	Yan, Junqing(junqingyan@snnu.edu.cn) ; Li, Youyong(yyli@suda.edu.cn) ; Liu, Shengzhong (Frank)(liusz@snnu.edu.cn)
英文摘要	The efficiency of the alkaline hydrogen evolution reaction (HER) has remained limited. Herein, a bimetallic Ni-W catalyst fabricated by the rapid dehydration of W-doped Ni(OH)(2) is reported. The Ni-W surface exhibits the following merits for an enhanced alkaline HER: a greater number of vacant outer d-orbitals, better discharge characteristics, and a more significant difference in H adsorption between W and Ni atoms. The free water molecules are adsorbed onto W sites, then dissociated into OH and H. While OH is released into the solution, H is re-adsorbed by nearby Ni sites. The synergistic effect of the Ni-W surface sites imparts this catalyst with the highest activity and the best stability at high current density. Specifically, at a current density of 500 mA cm(-2), the Ni-W catalyst reduces the overpotential to 303 mV, compared with 409 mV for the state-of-the-art Pt/C catalyst. Additionally, the Ni-W catalyst exhibits better long-term stability than the state-of-the-art Pt/C. Whereas the Pt activity decreases by 181 mA cm(-2) after 31 h of testing at 500 mA cm(-2), the Ni-W loses only 55 mA cm(-2) under the same conditions. Density functional theory (DFT) calculations confirm the synergistic mechanism, which can be useful for general alkaline HER processes.
资助项目	National Key Research Program of China[2017YFA0204800] ; National Key Research Program of China[2016YFA0202403] ; Natural Science Foundation of China[21603136] ; National Science Basic Research Plan in Shaanxi Province of China[2017JM2007] ; Changjiang Scholar and Innovative Research Team[IRT_14R33] ; 111 Project[B14041] ; Fundamental Research Funds for the Central Universities[2018CSLZ011] ; Chinese National 1000-Talent-Plan program
WOS关键词	PDAG NANOWIRE NETWORKS ; HYDROGEN EVOLUTION ; EFFICIENT ; OXYGEN ; ELECTROCATALYSTS ; DEHYDROGENATION ; NANOPARTICLES ; ADSORPTION ; OXIDATION ; CATALYSTS
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000468810200020
资助机构	National Key Research Program of China ; National Key Research Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Basic Research Plan in Shaanxi Province of China ; National Science Basic Research Plan in Shaanxi Province of China ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; 111 Project ; 111 Project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Chinese National 1000-Talent-Plan program ; Chinese National 1000-Talent-Plan program ; National Key Research Program of China ; National Key Research Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Basic Research Plan in Shaanxi Province of China ; National Science Basic Research Plan in Shaanxi Province of China ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; 111 Project ; 111 Project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Chinese National 1000-Talent-Plan program ; Chinese National 1000-Talent-Plan program ; National Key Research Program of China ; National Key Research Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Basic Research Plan in Shaanxi Province of China ; National Science Basic Research Plan in Shaanxi Province of China ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; 111 Project ; 111 Project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Chinese National 1000-Talent-Plan program ; Chinese National 1000-Talent-Plan program ; National Key Research Program of China ; National Key Research Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science Basic Research Plan in Shaanxi Province of China ; National Science Basic Research Plan in Shaanxi Province of China ; Changjiang Scholar and Innovative Research Team ; Changjiang Scholar and Innovative Research Team ; 111 Project ; 111 Project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Chinese National 1000-Talent-Plan program ; Chinese National 1000-Talent-Plan program
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/172003]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yan, Junqing; Li, Youyong; Liu, Shengzhong (Frank)
作者单位	1.Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Shaanxi Engn Lab Adv Energy Technol,Minist Educ, Shaanxi Key Lab Adv Energy Devices,Sch Mat Sci &, Xian 710119, Shaanxi, Peoples R China 2.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Wu, Huan,Kong, Lingqiao,Ji, Yujin,et al. Double-Site Ni-W Nanosheet for Best Alkaline HER Performance at High Current Density >500 mA cm(-2)[J]. ADVANCED MATERIALS INTERFACES,2019,6(10):9.
APA	Wu, Huan.,Kong, Lingqiao.,Ji, Yujin.,Yan, Junqing.,Ding, Yimin.,...&Liu, Shengzhong .(2019).Double-Site Ni-W Nanosheet for Best Alkaline HER Performance at High Current Density >500 mA cm(-2).ADVANCED MATERIALS INTERFACES,6(10),9.
MLA	Wu, Huan,et al."Double-Site Ni-W Nanosheet for Best Alkaline HER Performance at High Current Density >500 mA cm(-2)".ADVANCED MATERIALS INTERFACES 6.10(2019):9.