中文版 | English
Title

Heterostructured FeNi hydroxide for effective electrocatalytic oxygen evolution

Author
Corresponding AuthorZhang, Xinyu; Zheng, Zhiping
Publication Years
2022-07-01
DOI
Source Title
ISSN
2041-6520
EISSN
2041-6539
Volume13Pages:9256-9264
Abstract
Hydrogen production technology by water splitting has been heralded as an effective means to alleviate the envisioned energy crisis. However, the overall efficiency of water splitting is limited by the effectiveness of the anodic oxygen evolution reaction (OER) due to the high energy barrier of the 4e(-) process. The key to addressing this challenge is the development of high-performing catalysts. Transition-metal hydroxides with high intrinsic activity and stability have been widely studied for this purpose. Herein, we report a gelatin-induced structure-directing strategy for the preparation of a butterfly-like FeNi/Ni heterostructure (FeNi/Ni HS) with excellent catalytic performance. The electronic interactions between Ni2+ and Fe3+ are evident both in the mixed-metal "torso" region and at the "torso/wing" interface with increasing Ni3+ as a result of electron transfer from Ni2+ to Fe3+ mediated by the oxo bridge. The amount of Ni3+ also increases in the "wings", which is believed to be a consequence of charge balancing between Ni and O ions due to the presence of Ni vacancies upon formation of the heterostructure. The high-valence Ni3+ with enhanced Lewis acidity helps strengthen the binding with OH- to afford oxygen-containing intermediates, thus accelerating the OER process. Direct evidence of FeNi/Ni HS facilitating the formation of the Ni-OOH intermediate was provided by in situ Raman studies; the intermediate was produced at lower oxidation potentials than when Ni-2(CO3)(OH)(2) was used as the reference. The Co congener (FeCo/Co HS), prepared in a similar fashion, also showed excellent catalytic performance.
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
Funding Project
Shenzhen Nobel Prize Scientists Laboratory Project[C17213101] ; Guangdong Provincial Key Laboratory of Catalysis[2020B121201002] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; SUSTech["Y01216127","Y01216227"] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20190809115413414] ; Post-doctorate Scientific Research Fund for staying in (coming to) Shenzhen[K21217502]
WOS Research Area
Chemistry
WOS Subject
Chemistry, Multidisciplinary
WOS Accession No
WOS:000834526100001
Publisher
EI Accession Number
20223212554420
EI Keywords
Binary alloys ; Energy policy ; Hydrogen production ; Iron ; Nickel ; Reaction intermediates
ESI Classification Code
Gas Fuels:522 ; Energy Policy:525.6 ; Iron:545.1 ; Nickel:548.1 ; Chemical Products Generally:804
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/375551
DepartmentDepartment of Chemistry
工学院_材料科学与工程系
Affiliation
1.Southern Univ Sci & Technol SUSTech, Guangdong Prov Key Lab Energy Mat Elect Power, Dept Chem, Shenzhen 518055, Peoples R China
2.Minist Educ, SUSTech, Key Lab Energy Convers & Storage Technol, Shenzhen 518055, Peoples R China
3.SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
First Author AffilicationDepartment of Chemistry;  Southern University of Science and Technology
Corresponding Author AffilicationDepartment of Chemistry;  Southern University of Science and Technology;  
First Author's First AffilicationDepartment of Chemistry
Recommended Citation
GB/T 7714
Li, Fayan,Li, Yanyan,Li, Lei,et al. Heterostructured FeNi hydroxide for effective electrocatalytic oxygen evolution[J]. Chemical Science,2022,13:9256-9264.
APA
Li, Fayan.,Li, Yanyan.,Li, Lei.,Luo, Wen.,Lu, Zhouguang.,...&Zheng, Zhiping.(2022).Heterostructured FeNi hydroxide for effective electrocatalytic oxygen evolution.Chemical Science,13,9256-9264.
MLA
Li, Fayan,et al."Heterostructured FeNi hydroxide for effective electrocatalytic oxygen evolution".Chemical Science 13(2022):9256-9264.
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