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Anodized AlCoCrFeNi high-entropy alloy for alkaline water electrolysis with ultra-high performance
Alternative Title阳极氧化AlCoCrFeNi高熵合金用于高效碱性电解水
Zhou, Pengfei1; Wong, Po Kee2; Niu, Pengda3; Chen, Mingpeng1; Kwok, Chi Tat2; Tang, Yuxin4; Li, Ruidi3; Wang, Shuangpeng1; Pan, Hui1,5
2022-11-11
Source PublicationScience China Materials
ISSN2095-8226
Volume66Issue:3Pages:1033–1041
Abstract

Alkaline water electrolysis (AWE) is a prospective method for producing green hydrogen to solve the energy crisis and reduce environmental pollution. However, the hydrogen production efficiency through this process is exceptionally low because the electrodes are expensive and inefficient. In this work, a kind of high-entropy alloy (HEA), bulk AlCoCrFeNi, is used as the efficient electrode for AWE. Results show that the HEA treated by 5-min fast anodization can achieve ultra-high catalytic activities for hydrogen and oxygen evolution reactions with low overpotentials of 880 and 845 mV to reach the current densities of −500 and 500 mA cm, respectively. For full water splitting, it only needs 3.00 V and exhibits excellent stability of more than 100 h at 500 mA cm. Our study demonstrates that the anodized AlCoCrFeNi HEA has promising applications as a highly efficient catalyst in industrial water electrolysis for hydrogen production, potentially addressing the energy crisis and environmental concerns.

KeywordElectrocatalysis High-entropy Alloy Anodization Alkaline Water Electrolysis High Current Densities
DOI10.1007/s40843-022-2234-5
URLView the original
Indexed BySCIE
Language中文Chinese
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000884184500001
PublisherSCIENCE PRESS, 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
Scopus ID2-s2.0-85141940377
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Document TypeJournal article
CollectionDEPARTMENT OF PHYSICS AND CHEMISTRY
Faculty of Science and Technology
INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Corresponding AuthorTang, Yuxin; Li, Ruidi; Wang, Shuangpeng; Pan, Hui
Affiliation1.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999078, China
2.Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macao SAR 999078, China
3.Science and Technology on High Strength Structural Materials Laboratory, State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
4.College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
5.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR 999078, 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,Wong, Po Kee,Niu, Pengda,et al. Anodized AlCoCrFeNi high-entropy alloy for alkaline water electrolysis with ultra-high performance[J]. Science China Materials, 2022, 66(3), 1033–1041.
APA Zhou, Pengfei., Wong, Po Kee., Niu, Pengda., Chen, Mingpeng., Kwok, Chi Tat., Tang, Yuxin., Li, Ruidi., Wang, Shuangpeng., & Pan, Hui (2022). Anodized AlCoCrFeNi high-entropy alloy for alkaline water electrolysis with ultra-high performance. Science China Materials, 66(3), 1033–1041.
MLA Zhou, Pengfei,et al."Anodized AlCoCrFeNi high-entropy alloy for alkaline water electrolysis with ultra-high performance".Science China Materials 66.3(2022):1033–1041.
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