中文版 | English
Title

Mechanistic Regulation by Oxygen Vacancies in Structural Evolution Promoting Electrocatalytic Water Oxidation

Author
Corresponding AuthorFan, Ke
Publication Years
2023-03-01
DOI
Source Title
ISSN
2155-5435
Abstract
Introduction of oxygen vacancies (Vo) has been considered an effective strategy for promoting the oxygen evolution reaction (OER) performance of electrocatalysts. However, the role of Vo in improving OER activity is unclear. Herein, a Vo-rich spinel Co3O4 was used as a model catalyst to explore the mechanism of Vo in structural evolution during OER. The results suggest that the Vo-rich environment facilitates the reconstruction of Co3O4 to the Co(OH)2 intermediate with proton vacancies (Co(II)Ox(OH)y), which is favorable for the formation of the active species of CoOOH. Correlative operando characterizations and electrokinetic analyses indicate that a moderate Vo density can switch the O-O bond formation pathway, from a water nucleophilic attack to an intramolecular nucleophilic attack pathway, which is more kinetically favorable for water oxidation. However, a high Vo density quenches the formation of highly valent active intermediates. This study provides significant insights into the crucial role of vacancy defects during OER.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Others
Funding Project
National Key R&D Program of China["2022YFA0911900","2022YFA0911904"] ; National Natural Science Foundation of China["22088102","22172011","21872174","22002189","U1932148"] ; Fundamental Research Funds for the Central Universities["DUT22LK01","DUT22QN213"] ; Natural Science Foundation of Liaoning Province[2021-MS-126] ; International Science and Technology Cooperation Program["2017YFE0127800","2018YFE0203402"] ; Hunan Provincial Key Research and Development Program[2020WK2002] ; Hunan Provincial Natural Science Foundation of China["2020JJ2041","2020JJ5691"] ; Shenzhen Science and Technology Innovation Project[JCYJ20180307151313532] ; Zhejiang Province Selected Funding for Postdoctoral Research Projects[ZJ2021001]
WOS Research Area
Chemistry
WOS Subject
Chemistry, Physical
WOS Accession No
WOS:000954979600001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/524048
DepartmentDepartment of Chemistry
深圳格拉布斯研究院
Affiliation
1.Dalian Univ Technol, Inst Artificial Photosynth, Inst Energy Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Westlake Univ, Ctr Artificial Photosynth Solar Fuels, Sch Sci, Hangzhou 310024, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Dept Chem, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China
5.Cent South Univ, Hunan Joint Int Res Ctr Carbon Dioxide Resource Ut, Sch Phys & Elect, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Dinghua,Li, Fusheng,Zhao, Yilong,et al. Mechanistic Regulation by Oxygen Vacancies in Structural Evolution Promoting Electrocatalytic Water Oxidation[J]. ACS CATALYSIS,2023.
APA
Zhou, Dinghua.,Li, Fusheng.,Zhao, Yilong.,Wang, Linqin.,Zou, Haiyuan.,...&Fan, Ke.(2023).Mechanistic Regulation by Oxygen Vacancies in Structural Evolution Promoting Electrocatalytic Water Oxidation.ACS CATALYSIS.
MLA
Zhou, Dinghua,et al."Mechanistic Regulation by Oxygen Vacancies in Structural Evolution Promoting Electrocatalytic Water Oxidation".ACS CATALYSIS (2023).
Files in This Item:
There are no files associated with this item.
Related Services
Fulltext link
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Export to Excel
Export to Csv
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Zhou, Dinghua]'s Articles
[Li, Fusheng]'s Articles
[Zhao, Yilong]'s Articles
Baidu Scholar
Similar articles in Baidu Scholar
[Zhou, Dinghua]'s Articles
[Li, Fusheng]'s Articles
[Zhao, Yilong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou, Dinghua]'s Articles
[Li, Fusheng]'s Articles
[Zhao, Yilong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.