N and O multi-coordinated vanadium single atom with enhanced oxygen reduction activity

doi:10.1016/j.jcis.2021.03.074

	N and O multi-coordinated vanadium single atom with enhanced oxygen reduction activity
	Cheng, Ling 2; Huang, Hao 2; Lin, Zhiyu 2; Yang, Yang 2; Yuan, Qing 2; Hu, Lin 3; Wang, Changlai 1,2; Chen, Qianwang 2,3
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2021-07-15
卷号	594
关键词	Vanadium single atom N, O co-coordination Electrocatalyst Electronic structure Oxygen reduction reaction
ISSN号	0021-9797
DOI	10.1016/j.jcis.2021.03.074
通讯作者	Chen, Qianwang(cqw@ustc.edu.cn)
英文摘要	Recently, atomically dispersed transition-metal single atom in nitrogen-doped carbon matrix as electro-catalysts has aroused general interest. However, there is no report about vanadium single atom for ORR in the literature. According to d-band center theory for transition-metals, the performance of catalysts is regulated by the electronic structure of the catalytic center which determines the intermediate adsorption kinetics. Indeed, the valence of vanadium is variable, its electron structure could be modulated by an appropriate coordination structure. Here, a novel method is developed to prepare the N and O co-coordinated vanadium single atom (V-N1O4) embedded in the carbon matrix. The catalyst displays a half-wave potential of 865 mV in base solution which surpasses 20% Pt/C, and also shows a high power density of 180 mW/cm(2) in Zn-air batteries. DFT calculations reveal that the N and O coordination configuration could regulate the electron structure and geometry of vanadium to boost the electrocatalytic activity. (C) 2021 Elsevier Inc. All rights reserved.
资助项目	National Natural Science Foundation[51772283] ; National Natural Science Foundation[21972145] ; National Key R&D Program of China[2016YFA0401801] ; Fundamental Research Funds for the Central Universities[WK2060000032] ; Hong Kong Scholars Program[XJ2019022]
WOS关键词	METAL-FREE ELECTROCATALYSTS ; DOPED MESOPOROUS CARBON ; SPECTROSCOPIC CHARACTERIZATION ; EFFICIENT ELECTROCATALYST ; MECHANISTIC INSIGHTS ; COMPLEXES ; NITROGEN ; CATALYSTS ; GLYCINE ; SITES
WOS研究方向	Chemistry
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000642275500001
资助机构	National Natural Science Foundation ; National Key R&D Program of China ; Fundamental Research Funds for the Central Universities ; Hong Kong Scholars Program
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122483]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Qianwang
作者单位	1.City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Dept Mat Sci & Engn, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, Jinzhai Rd 96, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Ling,Huang, Hao,Lin, Zhiyu,et al. N and O multi-coordinated vanadium single atom with enhanced oxygen reduction activity[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2021,594.
APA	Cheng, Ling.,Huang, Hao.,Lin, Zhiyu.,Yang, Yang.,Yuan, Qing.,...&Chen, Qianwang.(2021).N and O multi-coordinated vanadium single atom with enhanced oxygen reduction activity.JOURNAL OF COLLOID AND INTERFACE SCIENCE,594.
MLA	Cheng, Ling,et al."N and O multi-coordinated vanadium single atom with enhanced oxygen reduction activity".JOURNAL OF COLLOID AND INTERFACE SCIENCE 594(2021).