In Situ Reconstruction of High-Entropy Heterostructure Catalysts for Stable Oxygen Evolution Electrocatalysis under Industrial Conditions
© 2024 Wiley‐VCH GmbH..
Despite of urgent needs for highly stable and efficient electrochemical water-splitting devices, it remains extremely challenging to acquire highly stable oxygen evolution reaction (OER) electrocatalysts under harsh industrial conditions. Here, a successful in situ synthesis of FeCoNiMnCr high-entropy alloy (HEA) and high-entropy oxide (HEO) heterocatalysts via a Cr-induced spontaneous reconstruction strategy is reported, and it is demonstrated that they deliver excellent ultrastable OER electrocatalytic performance with a low overpotential of 320 mV at 500 mA cm-2 and a negligible activity loss after maintaining at 100 mA cm-2 for 240 h. Remarkably, the heterocatalyst holds outstanding long-term stability under harsh industrial condition of 6 m KOH and 85 °C at a current density of as high as 500 mA cm-2 over 500 h. Density functional theory calculations reveal that the formation of the HEA-HEO heterostructure can provide electroactive sites possessing robust valence states to guarantee long-term stable OER process, leading to the enhancement of electroactivity. The findings of such highly stable OER heterocatalysts under industrial conditions offer a new perspective for designing and constructing efficient high-entropy electrocatalysts for practical industrial water splitting.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:36 |
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| Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 36(2024), 14 vom: 02. Apr., Seite e2310918 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Hu, Jue [VerfasserIn] |
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| Links: |
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| Themen: |
Heterostructures |
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| Anmerkungen: |
Date Revised 04.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/adma.202310918 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Despite of urgent needs for highly stable and efficient electrochemical water-splitting devices, it remains extremely challenging to acquire highly stable oxygen evolution reaction (OER) electrocatalysts under harsh industrial conditions. Here, a successful in situ synthesis of FeCoNiMnCr high-entropy alloy (HEA) and high-entropy oxide (HEO) heterocatalysts via a Cr-induced spontaneous reconstruction strategy is reported, and it is demonstrated that they deliver excellent ultrastable OER electrocatalytic performance with a low overpotential of 320 mV at 500 mA cm-2 and a negligible activity loss after maintaining at 100 mA cm-2 for 240 h. Remarkably, the heterocatalyst holds outstanding long-term stability under harsh industrial condition of 6 m KOH and 85 °C at a current density of as high as 500 mA cm-2 over 500 h. Density functional theory calculations reveal that the formation of the HEA-HEO heterostructure can provide electroactive sites possessing robust valence states to guarantee long-term stable OER process, leading to the enhancement of electroactivity. The findings of such highly stable OER heterocatalysts under industrial conditions offer a new perspective for designing and constructing efficient high-entropy electrocatalysts for practical industrial water splitting | ||
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| 650 | 4 | |a high‐entropy oxides | |
| 650 | 4 | |a long‐term stability | |
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| 700 | 1 | |a Guo, Tianqi |e verfasserin |4 aut | |
| 700 | 1 | |a Zhong, Xinyu |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Jiong |e verfasserin |4 aut | |
| 700 | 1 | |a Mei, Yunjie |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Chengxu |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Yuebin |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Mingzi |e verfasserin |4 aut | |
| 700 | 1 | |a Meng, Lijian |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zhiyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Bolong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Libo |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zhongchang |e verfasserin |4 aut | |
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