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Corrosion engineering boosting bulk Fe50Mn30Co10Cr10 high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst
Zhou, Pengfei1; Liu, Dong1; Chen, Yuyun1; Chen, Mingpeng1; Liu, Yunxiao2; Chen, Shi1; Kwok, Chi Tat3; Tang, Yuxin4; Wang, Shuangpeng1,2; Pan, Hui1,2
2022-05-20
Source PublicationJournal of Materials Science and Technology
ISSN1005-0302
Volume109Pages:267-275
Abstract

Oxygen evolution reaction (OER) is a critical process in electrocatalytic water splitting. However, the development of low-cost, highly efficient OER electrocatalysts by a simple method that can be used for industrial application on a large scale is still a huge challenge. Recently, high entropy alloy (HEA) has acquired extensive attention, which may provide answers to the current dilemma. Here, we report bulk FeMnCoCr, which is prepared by 3D printing on a large scale, as electrocatalyst for OER with high catalytic performance. Especially, an easy approach, corrosion engineering, is adopted for the first time to build an active layer of honeycomb nanostructures on its surface, leading to ultrahigh OER performance with an overpotential of 247 mV to achieve a current density of 10 mA cm, a low Tafel slope of 63 mV dec, and excellent stability up to 60 h at 100 mA cm in 1 M KOH. The excellent catalytic activity mainly originates from: (1) the binder-free self-supported honeycomb nanostructures and multi-component hydroxides, which improve intrinsic catalytic activity, provide rich active sites, and reduce interfacial resistance; and (2) the diverse valence states for multiple active sites to enhance the OER kinetics. Our findings show that corrosion engineering is a novel strategy to improve the bulk HEA catalytic performance. We expect that this work would open up a new avenue to fabricate large-scale HEA electrocatalysts by 3D printing and corrosion engineering for industrial applications.

KeywordCorrosion Engineering Electrocatalysis High Entropy Alloy Oxygen Evolution Reaction Self-supporting
DOI10.1016/j.jmst.2021.09.003
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical ; Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000788133500009
Scopus ID2-s2.0-85119282441
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Corresponding AuthorTang, Yuxin; Wang, Shuangpeng; Pan, Hui
Affiliation1.Institute of Applied Physics and Materials Engineering, University of Macau, 999078, Macao
2.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, 999078, Macao
3.Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao
4.College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, 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
Zhou, Pengfei,Liu, Dong,Chen, Yuyun,et al. Corrosion engineering boosting bulk Fe50Mn30Co10Cr10 high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst[J]. Journal of Materials Science and Technology,2022,109:267-275.
APA Zhou, Pengfei,Liu, Dong,Chen, Yuyun,Chen, Mingpeng,Liu, Yunxiao,Chen, Shi,Kwok, Chi Tat,Tang, Yuxin,Wang, Shuangpeng,&Pan, Hui.(2022).Corrosion engineering boosting bulk Fe50Mn30Co10Cr10 high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst.Journal of Materials Science and Technology,109,267-275.
MLA Zhou, Pengfei,et al."Corrosion engineering boosting bulk Fe50Mn30Co10Cr10 high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst".Journal of Materials Science and Technology 109(2022):267-275.
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