Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts
The oxygen evolution reaction (OER) is a key process in electrochemical energy conversion devices. Understanding the origins of the lattice oxygen oxidation mechanism is crucial because OER catalysts operating via this mechanism could bypass certain limitations associated with those operating by the...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/151343 |
| _version_ | 1811680154328498176 |
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| author | Huang, Zhenfeng Song, Jiajia Du, Yonghua Xi, Shibo Dou, Shuo Nsanzimana, Jean Marie Vianney Wang, Cheng Xu, Jason Zhichuan Wang, Xin |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Huang, Zhenfeng Song, Jiajia Du, Yonghua Xi, Shibo Dou, Shuo Nsanzimana, Jean Marie Vianney Wang, Cheng Xu, Jason Zhichuan Wang, Xin |
| author_sort | Huang, Zhenfeng |
| collection | NTU |
| description | The oxygen evolution reaction (OER) is a key process in electrochemical energy conversion devices. Understanding the origins of the lattice oxygen oxidation mechanism is crucial because OER catalysts operating via this mechanism could bypass certain limitations associated with those operating by the conventional adsorbate evolution mechanism. Transition metal oxyhydroxides are often considered to be the real catalytic species in a variety of OER catalysts and their low-dimensional layered structures readily allow direct formation of the O–O bond. Here, we incorporate catalytically inactive Zn2+ into CoOOH and suggest that the OER mechanism is dependent on the amount of Zn2+ in the catalyst. The inclusion of the Zn2+ ions gives rise to oxygen non-bonding states with different local configurations that depend on the quantity of Zn2+. We propose that the OER proceeds via the lattice oxygen oxidation mechanism pathway on the metal oxyhydroxides only if two neighbouring oxidized oxygens can hybridize their oxygen holes without sacrificing metal–oxygen hybridization significantly, finding that Zn0.2Co0.8OOH has the optimum activity. |
| first_indexed | 2024-10-01T03:20:32Z |
| format | Journal Article |
| id | ntu-10356/151343 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:20:32Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1513432021-06-22T07:32:15Z Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts Huang, Zhenfeng Song, Jiajia Du, Yonghua Xi, Shibo Dou, Shuo Nsanzimana, Jean Marie Vianney Wang, Cheng Xu, Jason Zhichuan Wang, Xin School of Chemical and Biomedical Engineering School of Materials Science and Engineering Engineering::Chemical engineering Electrocatalysis Energy Storage The oxygen evolution reaction (OER) is a key process in electrochemical energy conversion devices. Understanding the origins of the lattice oxygen oxidation mechanism is crucial because OER catalysts operating via this mechanism could bypass certain limitations associated with those operating by the conventional adsorbate evolution mechanism. Transition metal oxyhydroxides are often considered to be the real catalytic species in a variety of OER catalysts and their low-dimensional layered structures readily allow direct formation of the O–O bond. Here, we incorporate catalytically inactive Zn2+ into CoOOH and suggest that the OER mechanism is dependent on the amount of Zn2+ in the catalyst. The inclusion of the Zn2+ ions gives rise to oxygen non-bonding states with different local configurations that depend on the quantity of Zn2+. We propose that the OER proceeds via the lattice oxygen oxidation mechanism pathway on the metal oxyhydroxides only if two neighbouring oxidized oxygens can hybridize their oxygen holes without sacrificing metal–oxygen hybridization significantly, finding that Zn0.2Co0.8OOH has the optimum activity. Ministry of Education (MOE) National Research Foundation (NRF) The authors appreciate the support from the National Research Foundation, Prime Minister’s Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. We also acknowledge financial support from the academic research fund AcRF Tier 2 (M4020246, ARC10/15), Ministry of Education, Singapore. 2021-06-22T07:32:14Z 2021-06-22T07:32:14Z 2019 Journal Article Huang, Z., Song, J., Du, Y., Xi, S., Dou, S., Nsanzimana, J. M. V., Wang, C., Xu, J. Z. & Wang, X. (2019). Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts. Nature Energy, 4(4), 329-338. https://dx.doi.org/10.1038/s41560-019-0355-9 2058-7546 0000-0003-2655-045X 0000-0002-2085-7090 0000-0001-7746-5920 0000-0003-2686-466X https://hdl.handle.net/10356/151343 10.1038/s41560-019-0355-9 2-s2.0-85063458192 4 4 329 338 en M4020246 ARC10/15 Nature Energy © 2019 The Author(s), under exclusive licence to Springer Nature Limited. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Electrocatalysis Energy Storage Huang, Zhenfeng Song, Jiajia Du, Yonghua Xi, Shibo Dou, Shuo Nsanzimana, Jean Marie Vianney Wang, Cheng Xu, Jason Zhichuan Wang, Xin Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title | Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title_full | Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title_fullStr | Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title_full_unstemmed | Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title_short | Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts |
| title_sort | chemical and structural origin of lattice oxygen oxidation in co zn oxyhydroxide oxygen evolution electrocatalysts |
| topic | Engineering::Chemical engineering Electrocatalysis Energy Storage |
| url | https://hdl.handle.net/10356/151343 |
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