Title | Heterostructured FeNi hydroxide for effective electrocatalytic oxygen evolution |
Author | |
Corresponding Author | Zhang, Xinyu; Zheng, Zhiping |
Publication Years | 2022-07-01
|
DOI | |
Source Title | |
ISSN | 2041-6520
|
EISSN | 2041-6539
|
Volume | 13Pages: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 | |
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 Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/375551 |
Department | Department 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 Affilication | Department of Chemistry; Southern University of Science and Technology |
Corresponding Author Affilication | Department of Chemistry; Southern University of Science and Technology; |
First Author's First Affilication | Department 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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