Post-oxidation of all-organic electrocatalysts to promote O−O coupling in water oxidation
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| Yayımlandı: | Nature Communications vol. 16, no. 1 (2025), p. 4389 |
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| Baskı/Yayın Bilgisi: |
Nature Publishing Group
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| Konular: | |
| Online Erişim: | Citation/Abstract Full Text - PDF |
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| 001 | 3204003528 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 2041-1723 | ||
| 024 | 7 | |a 10.1038/s41467-025-59771-6 |2 doi | |
| 035 | |a 3204003528 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 084 | |a 145839 |2 nlm | ||
| 245 | 1 | |a Post-oxidation of all-organic electrocatalysts to promote O−O coupling in water oxidation | |
| 260 | |b Nature Publishing Group |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a Covalently bonded metal-free electrocatalysts exhibit significant potential for sustainable energy technologies, yet their performances remain unsatisfactory compared with metal-based catalysts. Herein, we propose an all-organic electrocatalyst, MEC-2, that conforms to the infrequent oxide path mechanism in alkaline oxygen evolution reaction through post-oxidation modification. MEC-2 achieves an intrinsic overpotential of 257.7 ± 0.6 mV at 10 mA·cm−2 and possesses durability with negligible degradation over 100,000 CV cycles or 250 h of operation at 1.0 A·cm−2, being comparable to the advanced metal-based OER electrocatalysts. The 18O-labeled operando characterization and theoretical calculations unveil that post-oxidation modification enhances the electron affinity to OH intermediates, and adjusts the adsorption configuration and proximity distance of O intermediates, thereby promoting direct O−O radical coupling. In this work, we show a fresh perspective for understanding the role of non-metallic elements/functional groups in electrocatalysis, and to a certain extent, narrows the gap between all-organic electrocatalysts and metal-based electrocatalysts.Metal-free catalysts offer a sustainable option for water oxidation but typically underperform compared to metal-based ones. Here, the authors report an all-organic catalyst that uses a rare oxide pathway to achieve high efficiency and long-term stability, comparable to metal-based systems. | |
| 653 | |a Intermediates | ||
| 653 | |a Oxidation | ||
| 653 | |a Electrocatalysts | ||
| 653 | |a Metals | ||
| 653 | |a Sustainable energy | ||
| 653 | |a Clean technology | ||
| 653 | |a Catalysts | ||
| 653 | |a Electron affinity | ||
| 653 | |a Oxygen evolution reactions | ||
| 653 | |a Functional groups | ||
| 653 | |a Energy technology | ||
| 653 | |a Coupling | ||
| 653 | |a Environmental | ||
| 773 | 0 | |t Nature Communications |g vol. 16, no. 1 (2025), p. 4389 | |
| 786 | 0 | |d ProQuest |t Health & Medical Collection | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3204003528/abstract/embedded/6A8EOT78XXH2IG52?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3204003528/fulltextPDF/embedded/6A8EOT78XXH2IG52?source=fedsrch |