| Title: | Stable seawater oxidation with a self-healing oxygen-evolving catalyst |
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| Authors: | ID Zhang, Xiaojian (Author)
ID Feng, Chao (Author)
ID Fan, Zeyu (Author)
ID Zhang, Beibei (Author)
ID Xiao, Yequan (Author)
ID Mavrič, Andraž (Author)
ID Pastukhova, Nadiia (Author)
ID Valant, Matjaž (Author)
ID Han, Yi-Fan (Author)
ID Li, Yanbo (Author) |
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| Files: |  https://pubs.rsc.org/en/content/articlelanding/2023/QI/D3QI00470H
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | Direct seawater electrolysis is key to massive hydrogen fuel production without the depletion of precious freshwater resources and the need for high-purity electrolytes. However, the presence of high-concentration chloride ions (Cl−) and alkaline-earth metal ions (Mg2+, Ca2+) poses great challenges to the stability and selectivity of the catalysts for seawater splitting. Here, we demonstrate a self-healing oxygen evolution reaction (OER) catalyst for long-term seawater electrolysis. By suppressing the competitive chlorine evolution reaction and precipitating the alkaline-earth metal ions through an alkaline treatment of the seawater, stable seawater oxidation is achieved owing to the self-healing ability of the borate-intercalated nickel–cobalt–iron oxyhydroxides (NiCoFe-Bi) OER catalyst under highly-alkaline conditions. The self-healing NiCoFe-Bi catalyst achieves stable seawater oxidation at a large current density of 500 mA cm−2 for 1000 h with near unity Faraday efficiency. Our results have demonstrated strong durability and high OER selectivity of the self-healing catalyst under harsh conditions, paving the way for industrial large-scale seawater electrolysis. |
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| Keywords: | chemistry, electrocatalysis, seawater oxidation, oxygen evolution reaction |
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| Publication date: | 01.05.2023 |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 3103-3111 |
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| Numbering: | Vol. 10, issue 10 |
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| PID: | 20.500.12556/RUNG-8194-9ff77878-bfb8-ee4a-36b6-820ee4a7840b  |
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| COBISS.SI-ID: | 151244291 |
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| UDC: | 54 |
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| ISSN on article: | 2052-1553 |
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| DOI: | 10.1039/D3QI00470H |
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| NUK URN: | URN:SI:UNG:REP:GJB9L2NH |
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| Publication date in RUNG: | 08.05.2023 |
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| Views: | 2022 |
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| Downloads: | 5 |
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