Concerning the stability of seawater electrolysis : a corrosion mechanism study of halide on Ni-based anode
© 2023. Springer Nature Limited..
The corrosive anions (e.g., Cl-) have been recognized as the origins to cause severe corrosion of anode during seawater electrolysis, while in experiments it is found that natural seawater (~0.41 M Cl-) is usually more corrosive than simulated seawater (~0.5 M Cl-). Here we elucidate that besides Cl-, Br- in seawater is even more harmful to Ni-based anodes because of the inferior corrosion resistance and faster corrosion kinetics in bromide than in chloride. Experimental and simulated results reveal that Cl- corrodes locally to form narrow-deep pits while Br- etches extensively to generate shallow-wide pits, which can be attributed to the fast diffusion kinetics of Cl- and the lower reaction energy of Br- in the passivation layer. Additionally, for the Ni-based electrodes with catalysts (e.g., NiFe-LDH) loading on the surface, Br- causes extensive spalling of the catalyst layer, resulting in rapid performance degradation. This work clearly points out that, in addition to anti-Cl- corrosion, designing anti-Br- corrosion anodes is even more crucial for future application of seawater electrolysis.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
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| Enthalten in: |
Nature communications - 14(2023), 1 vom: 10. Aug., Seite 4822 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Sixie [VerfasserIn] |
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| Anmerkungen: |
Date Revised 19.11.2023 published: Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1038/s41467-023-40563-9 |
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| PPN (Katalog-ID): |
NLM360626785 |
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| 245 | 1 | 0 | |a Concerning the stability of seawater electrolysis |b a corrosion mechanism study of halide on Ni-based anode |
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| 520 | |a © 2023. Springer Nature Limited. | ||
| 520 | |a The corrosive anions (e.g., Cl-) have been recognized as the origins to cause severe corrosion of anode during seawater electrolysis, while in experiments it is found that natural seawater (~0.41 M Cl-) is usually more corrosive than simulated seawater (~0.5 M Cl-). Here we elucidate that besides Cl-, Br- in seawater is even more harmful to Ni-based anodes because of the inferior corrosion resistance and faster corrosion kinetics in bromide than in chloride. Experimental and simulated results reveal that Cl- corrodes locally to form narrow-deep pits while Br- etches extensively to generate shallow-wide pits, which can be attributed to the fast diffusion kinetics of Cl- and the lower reaction energy of Br- in the passivation layer. Additionally, for the Ni-based electrodes with catalysts (e.g., NiFe-LDH) loading on the surface, Br- causes extensive spalling of the catalyst layer, resulting in rapid performance degradation. This work clearly points out that, in addition to anti-Cl- corrosion, designing anti-Br- corrosion anodes is even more crucial for future application of seawater electrolysis | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Wang, Yunan |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Shuyu |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zhongfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Haocheng |e verfasserin |4 aut | |
| 700 | 1 | |a Yi, Li |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Xu |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Qihao |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Wenwen |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Aiying |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, Zhiyi |e verfasserin |4 aut | |
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