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Reconstruction optimization of distorted FeOOH/Ni hydroxide for enhanced oxygen evolution reaction
Feng, Jinxian1; Chen, Mingpeng1; Zhou, Pengfei1; Liu, Di1; Chen, Yu Yun1; He, Bingchen1; Bai, Haoyun1; Liu, Dong1; Ip, Weng Fai2; Chen, Shi1; Liu, Detao3; Feng, Wenlin4; Ni, Jun5; Pan, Hui1,2
2022-07-01
Source PublicationMaterials Today Energy
Volume27
Abstract

Oxygen evolution reaction (OER) is one of the most important anodic reactions in electrochemical conversion devices. Although a lot of OER electrocatalysts have been developed, the actual active sites during OER have not been fully understood. Herein, we report that the distorted FeOOH/Ni hydroxide on Ni foam (NF) (d-FeOOH/Ni hydroxide-NF) shows better electrochemical performance (1.50 V at 100 mA/cm and long-term stability for 32 h at 425 mA/cm) than crystalline FeOOH/Ni hydroxide-NF (c-FeOOH/Ni hydroxide-NF) and outperforms most of the state-of-the-art electrocatalysts. By using in-situ and ex-situ techniques, we show that the interfaces in d-FeOOH/Ni hydroxide-NF, which are the key active sites for OER, are well maintained during the reaction, leading to promoted catalytic performance and long-term stability at high current density. We demonstrate that the structure rearrangement in d-FeOOH/Ni hydroxide-NF endows high flexibility of the lattice and tolerates the volume expansion during OER. Our study provides an insightful understanding on the catalytic performance of Fe-Ni-based electrocatalysts and the guidance to their design and synthesis for practical application.

KeywordDistorted Feooh/ni Hydroxide Electrocatalyst Interface Oxygen Evolution Reaction Surface Reconstruction
DOI10.1016/j.mtener.2022.101005
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000808276600005
Scopus ID2-s2.0-85130278543
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorPan, Hui
Affiliation1.Institute of Applied Physics and Materials Engineering, University of Macau, Special Administrative Region, Macao, China
2.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Special Administrative Region, Macao, China
3.State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
4.Department of Physics and Energy, Chongqing University of Technology, Chongqing, 400054, China
5.Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou, 310014, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING;  Faculty of Science and Technology
Recommended Citation
GB/T 7714
Feng, Jinxian,Chen, Mingpeng,Zhou, Pengfei,et al. Reconstruction optimization of distorted FeOOH/Ni hydroxide for enhanced oxygen evolution reaction[J]. Materials Today Energy,2022,27.
APA Feng, Jinxian,Chen, Mingpeng,Zhou, Pengfei,Liu, Di,Chen, Yu Yun,He, Bingchen,Bai, Haoyun,Liu, Dong,Ip, Weng Fai,Chen, Shi,Liu, Detao,Feng, Wenlin,Ni, Jun,&Pan, Hui.(2022).Reconstruction optimization of distorted FeOOH/Ni hydroxide for enhanced oxygen evolution reaction.Materials Today Energy,27.
MLA Feng, Jinxian,et al."Reconstruction optimization of distorted FeOOH/Ni hydroxide for enhanced oxygen evolution reaction".Materials Today Energy 27(2022).
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