Vanadium nitride based CoFe prussian blue analogues for enhanced electrocatalytic oxygen evolution

doi:10.1016/j.ijhydene.2020.08.274

	Vanadium nitride based CoFe prussian blue analogues for enhanced electrocatalytic oxygen evolution
	Meng, Kai 1,4; Zheng, Zhilin 3,4; Cao, Juntai 2; Liu, Lujing 4; Jia, Zhijun 4; Wang, Yi 4; Qi, Tao 4
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2020-11-13
卷号	45 期号:56 页码:31410-31417
关键词	CoFe Prussian blue analogues Vanadium nitride Close contact Electron interaction Oxygen evolution reaction
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2020.08.274
英文摘要	The development of efficient and stable nonprecious-metal catalysts remains a challenge for electrochemical water oxidation in practical applications. Prussian blue analogues (MM'-PBAs, A(x)M(y) [M'(CN)(6)], -nH(2)O: A = alkali metal; M/M' = transition metals), as a kind of potential electrocatalyst candidate for oxygen evolution reaction (OER), are rarely studied. Herein, by a facile coprecipitation method, CoFe-PBAs were in-situ grown on the surface of highly conductive vanadium nitride (VN) particles. The hybrid CoFe-PBAs/VN achieves the amelioration of the poor conductivity of bare CoFe-PBAs and the increase in the density of Co2+ active sites due to electron interaction. Compared with bare CoFe-PBAs (over-potential of 398 mV at 10 mA cm(-2) and Tafel slope of 78.35 mV dec(-1)), the CoFe-PBAsNN manifests a remarkably enhanced electrocatalytic activity for OER (lower overpotential of 290 mV at 10 mA cm(-2) and a smaller Tafel slope of 39.72 mV dec(-1)), which is superior among PBAs and PBAs-derived materials reported as electrocatalysts for OER. Besides, this hybrid material behaves an excellent long-term durability. High conductivity of VN and electron interaction between VN and CoFe-PBAs contribute to the promoted catalytic performance. This study provides a novel strategy using VN substrates to support PBAs-based catalysts so as to obtain highly active and stable electrocatalysts towards practical applications. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
资助项目	Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; "Strategic Priority Research Program " of Chinese Academy of Sciences[XDA21070302]
WOS关键词	PEROXIDE FUEL-CELL ; WATER OXIDATION ; EFFICIENT ELECTROCATALYST ; NI FOAM ; HYDROGEN ; SUPERCAPACITORS ; NANOSTRUCTURES ; CONSTRUCTION ; NANOARRAY ; NANOCAGES
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000583961000007
资助机构	Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; "Strategic Priority Research Program " of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42698]
专题	中国科学院过程工程研究所
通讯作者	Wang, Yi; Qi, Tao
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ British Columbia, Dept Mat Engn, Vancouver, BC V6T 1Z4, Canada 3.Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Meng, Kai,Zheng, Zhilin,Cao, Juntai,et al. Vanadium nitride based CoFe prussian blue analogues for enhanced electrocatalytic oxygen evolution[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45(56):31410-31417.
APA	Meng, Kai.,Zheng, Zhilin.,Cao, Juntai.,Liu, Lujing.,Jia, Zhijun.,...&Qi, Tao.(2020).Vanadium nitride based CoFe prussian blue analogues for enhanced electrocatalytic oxygen evolution.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(56),31410-31417.
MLA	Meng, Kai,et al."Vanadium nitride based CoFe prussian blue analogues for enhanced electrocatalytic oxygen evolution".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.56(2020):31410-31417.