Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading
Highlights Core–shell IrPt nanoalloy on La/Ni–Co₃O₄ achieves unprecedented bifunctional activity (2 A cm−2 at 1.72 V) in proton exchange membrane water electrolysis (PEMWE) with ultralow loadings (0.075 mg cm−2 Ir/Pt at both electrodes). 646-h durability in PEMWE cell (5 μV h−1 decay) via IrPt-core@...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | Nano-Micro Letters |
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| Online Access: | https://doi.org/10.1007/s40820-025-01845-7 |
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| author | Yifei Liu Xinmeng Er Xinyao Wang Hangxing Ren Wenchao Wang Feng Cao Taiyan Zhang Pan Liu Yakun Yuan Fangbo Yu Yang Ren Fuqiang Huang Wenjiang Ding Lina Chong |
| author_facet | Yifei Liu Xinmeng Er Xinyao Wang Hangxing Ren Wenchao Wang Feng Cao Taiyan Zhang Pan Liu Yakun Yuan Fangbo Yu Yang Ren Fuqiang Huang Wenjiang Ding Lina Chong |
| author_sort | Yifei Liu |
| collection | DOAJ |
| description | Highlights Core–shell IrPt nanoalloy on La/Ni–Co₃O₄ achieves unprecedented bifunctional activity (2 A cm−2 at 1.72 V) in proton exchange membrane water electrolysis (PEMWE) with ultralow loadings (0.075 mg cm−2 Ir/Pt at both electrodes). 646-h durability in PEMWE cell (5 μV h−1 decay) via IrPt-core@IrPtOx-shell synergy, hierarchical pores, and oxygen vacancies for robust electron/mass transfer and active-site stability. In situ X-ray absorption spectroscopy combined with density functional theory unveils Ir–O–Pt sites enabling bi-nuclear oxygen evolution reaction and Volmer–Tafel hydrogen evolution reaction mechanisms through optimized Ir/Pt charge redistribution, breaking kinetic limitations. |
| format | Article |
| id | doaj-art-d660efc0db824fa0a5aaf502dd08129c |
| institution | DOAJ |
| issn | 2311-6706 2150-5551 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj-art-d660efc0db824fa0a5aaf502dd08129c2025-08-20T03:05:56ZengSpringerOpenNano-Micro Letters2311-67062150-55512025-07-0117112210.1007/s40820-025-01845-7Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal LoadingYifei Liu0Xinmeng Er1Xinyao Wang2Hangxing Ren3Wenchao Wang4Feng Cao5Taiyan Zhang6Pan Liu7Yakun Yuan8Fangbo Yu9Yang Ren10Fuqiang Huang11Wenjiang Ding12Lina Chong13Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityState Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiao Tong UniversityState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityInternational Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiao Tong UniversityDepartment of Physics, JC STEM Lab of Energy and Materials Physics, City University of Hong KongCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityCenter of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong UniversityHighlights Core–shell IrPt nanoalloy on La/Ni–Co₃O₄ achieves unprecedented bifunctional activity (2 A cm−2 at 1.72 V) in proton exchange membrane water electrolysis (PEMWE) with ultralow loadings (0.075 mg cm−2 Ir/Pt at both electrodes). 646-h durability in PEMWE cell (5 μV h−1 decay) via IrPt-core@IrPtOx-shell synergy, hierarchical pores, and oxygen vacancies for robust electron/mass transfer and active-site stability. In situ X-ray absorption spectroscopy combined with density functional theory unveils Ir–O–Pt sites enabling bi-nuclear oxygen evolution reaction and Volmer–Tafel hydrogen evolution reaction mechanisms through optimized Ir/Pt charge redistribution, breaking kinetic limitations.https://doi.org/10.1007/s40820-025-01845-7Proton exchange membrane water electrolysisBifunctional catalystOxygen evolution reactionHydrogen evolution reactionCore–shell catalyst |
| spellingShingle | Yifei Liu Xinmeng Er Xinyao Wang Hangxing Ren Wenchao Wang Feng Cao Taiyan Zhang Pan Liu Yakun Yuan Fangbo Yu Yang Ren Fuqiang Huang Wenjiang Ding Lina Chong Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading Nano-Micro Letters Proton exchange membrane water electrolysis Bifunctional catalyst Oxygen evolution reaction Hydrogen evolution reaction Core–shell catalyst |
| title | Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading |
| title_full | Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading |
| title_fullStr | Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading |
| title_full_unstemmed | Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading |
| title_short | Core–Shell IrPt Nanoalloy on La/Ni–Co3O4 for High-Performance Bifunctional PEM Electrolysis with Ultralow Noble Metal Loading |
| title_sort | core shell irpt nanoalloy on la ni co3o4 for high performance bifunctional pem electrolysis with ultralow noble metal loading |
| topic | Proton exchange membrane water electrolysis Bifunctional catalyst Oxygen evolution reaction Hydrogen evolution reaction Core–shell catalyst |
| url | https://doi.org/10.1007/s40820-025-01845-7 |
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