A review on fundamentals for designing oxygen evolution electrocatalysts
Electricity-driven water splitting can facilitate the storage of electrical energy in the form of hydrogen gas. As a half-reaction of electricity-driven water splitting, the oxygen evolution reaction (OER) is the major bottleneck due to the sluggish kinetics of this four-electron transfer reaction....
| 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/10356/153346 |
| _version_ | 1811691923312738304 |
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| author | Song, Jiajia Wei, Chao Huang, Zhen-Feng Liu, Chuntai Zeng, Lin Wang, Xin Xu, Zhichuan Jason |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Song, Jiajia Wei, Chao Huang, Zhen-Feng Liu, Chuntai Zeng, Lin Wang, Xin Xu, Zhichuan Jason |
| author_sort | Song, Jiajia |
| collection | NTU |
| description | Electricity-driven water splitting can facilitate the storage of electrical energy in the form of hydrogen gas. As a half-reaction of electricity-driven water splitting, the oxygen evolution reaction (OER) is the major bottleneck due to the sluggish kinetics of this four-electron transfer reaction. Developing low-cost and robust OER catalysts is critical to solving this efficiency problem in water splitting. The catalyst design has to be built based on the fundamental understanding of the OER mechanism and the origin of the reaction overpotential. In this article, we summarize the recent progress in understanding OER mechanisms, which include the conventional adsorbate evolution mechanism (AEM) and lattice-oxygen-mediated mechanism (LOM) from both theoretical and experimental aspects. We start with the discussion on the AEM and its linked scaling relations among various reaction intermediates. The strategies to reduce overpotential based on the AEM and its derived descriptors are then introduced. To further reduce the OER overpotential, it is necessary to break the scaling relation of HOO* and HO* intermediates in conventional AEM to go beyond the activity limitation of the volcano relationship. Strategies such as stabilization of HOO*, proton acceptor functionality, and switching the OER pathway to LOM are discussed. The remaining questions on the OER and related perspectives are also presented at the end. |
| first_indexed | 2024-10-01T06:27:36Z |
| format | Journal Article |
| id | ntu-10356/153346 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:27:36Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1533462021-12-04T20:11:14Z A review on fundamentals for designing oxygen evolution electrocatalysts Song, Jiajia Wei, Chao Huang, Zhen-Feng Liu, Chuntai Zeng, Lin Wang, Xin Xu, Zhichuan Jason School of Materials Science and Engineering School of Chemical and Biomedical Engineering Interdisciplinary Graduate School (IGS) Campus for Research Excellence and Technological Enterprise (CREATE) Energy Research Institute @ NTU (ERI@N) Engineering::Materials::Energy materials Electrocatalysts Hydrogen storage; Electricity-driven water splitting can facilitate the storage of electrical energy in the form of hydrogen gas. As a half-reaction of electricity-driven water splitting, the oxygen evolution reaction (OER) is the major bottleneck due to the sluggish kinetics of this four-electron transfer reaction. Developing low-cost and robust OER catalysts is critical to solving this efficiency problem in water splitting. The catalyst design has to be built based on the fundamental understanding of the OER mechanism and the origin of the reaction overpotential. In this article, we summarize the recent progress in understanding OER mechanisms, which include the conventional adsorbate evolution mechanism (AEM) and lattice-oxygen-mediated mechanism (LOM) from both theoretical and experimental aspects. We start with the discussion on the AEM and its linked scaling relations among various reaction intermediates. The strategies to reduce overpotential based on the AEM and its derived descriptors are then introduced. To further reduce the OER overpotential, it is necessary to break the scaling relation of HOO* and HO* intermediates in conventional AEM to go beyond the activity limitation of the volcano relationship. Strategies such as stabilization of HOO*, proton acceptor functionality, and switching the OER pathway to LOM are discussed. The remaining questions on the OER and related perspectives are also presented at the end. Ministry of Education (MOE) Accepted version This work was supported by the Campus for Research Excellence and Technological Enterprise (CREATE) in Singapore and the Singapore Ministry of Education Tier 2 Grants (MOE2017- T2-1-009 and MOE2018-T2-2-027 (S)). 2021-11-24T08:40:09Z 2021-11-24T08:40:09Z 2020 Journal Article Song, J., Wei, C., Huang, Z., Liu, C., Zeng, L., Wang, X. & Xu, Z. J. (2020). A review on fundamentals for designing oxygen evolution electrocatalysts. Chemical Society Reviews, 49(7), 2196-2214. https://dx.doi.org/10.1039/C9CS00607A 0306-0012 https://hdl.handle.net/10356/153346 10.1039/C9CS00607A 7 49 2196 2214 en MOE2017- T2-1-009 MOE2018-T2-2-027 (S) Chemical Society Reviews © 2020 The Royal Society of Chemistry. All rights reserved. This paper was published in Chemical Society Reviews and is made available with permission of The Royal Society of Chemistry. application/pdf |
| spellingShingle | Engineering::Materials::Energy materials Electrocatalysts Hydrogen storage; Song, Jiajia Wei, Chao Huang, Zhen-Feng Liu, Chuntai Zeng, Lin Wang, Xin Xu, Zhichuan Jason A review on fundamentals for designing oxygen evolution electrocatalysts |
| title | A review on fundamentals for designing oxygen evolution electrocatalysts |
| title_full | A review on fundamentals for designing oxygen evolution electrocatalysts |
| title_fullStr | A review on fundamentals for designing oxygen evolution electrocatalysts |
| title_full_unstemmed | A review on fundamentals for designing oxygen evolution electrocatalysts |
| title_short | A review on fundamentals for designing oxygen evolution electrocatalysts |
| title_sort | review on fundamentals for designing oxygen evolution electrocatalysts |
| topic | Engineering::Materials::Energy materials Electrocatalysts Hydrogen storage; |
| url | https://hdl.handle.net/10356/153346 |
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