Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction
Current OER electrocatalysts are hardly applicable for industrial use, which demands high current density (≥ 1000 mA cm-2) at low overpotential (≤ 300 mV) with long-term stability (≥ 100 h). Herein self-supported heterojunction catalyst, NiCo-OH@NixFeyO4 on Fe foam (FF), is in situ synthesized using...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/169002 |
| _version_ | 1826112298296541184 |
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| author | Li, Zhong Zhang, Xinglin Zhang, Zheye Chen, Peng Zhang, Yizhou Dong, Xiaochen |
| author2 | School of Chemistry, Chemical Engineering and Biotechnology |
| author_facet | School of Chemistry, Chemical Engineering and Biotechnology Li, Zhong Zhang, Xinglin Zhang, Zheye Chen, Peng Zhang, Yizhou Dong, Xiaochen |
| author_sort | Li, Zhong |
| collection | NTU |
| description | Current OER electrocatalysts are hardly applicable for industrial use, which demands high current density (≥ 1000 mA cm-2) at low overpotential (≤ 300 mV) with long-term stability (≥ 100 h). Herein self-supported heterojunction catalyst, NiCo-OH@NixFeyO4 on Fe foam (FF), is in situ synthesized using two-step corrosion engineering. It only requires an overpotential 275 mV to drive the current density of 1000 mA cm-2 with good long-term stability. Theoretical calculations reveal that such good performance is attributable to electron transfer from NiCo-OH to NixFeyO4 which weakens the adsorption energy of reaction intermediate (OOH*) to promote the release of O2 and lowers the free energy barriers for the reaction. Furthermore, a water splitting cell with NiCo-OH@NixFeyO4/FF as anode and CoP@FeP/FF as cathode demonstrates its potential for industrial application. The study presents a general strategy for in situ synthesis of heterojunction catalysts on metal foams using controlled corrosion engineering for various catalytic applications. |
| first_indexed | 2024-10-01T03:04:42Z |
| format | Journal Article |
| id | ntu-10356/169002 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:04:42Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1690022023-06-26T07:53:23Z Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction Li, Zhong Zhang, Xinglin Zhang, Zheye Chen, Peng Zhang, Yizhou Dong, Xiaochen School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Heterojunction Catalysts Corrosion Engineering Current OER electrocatalysts are hardly applicable for industrial use, which demands high current density (≥ 1000 mA cm-2) at low overpotential (≤ 300 mV) with long-term stability (≥ 100 h). Herein self-supported heterojunction catalyst, NiCo-OH@NixFeyO4 on Fe foam (FF), is in situ synthesized using two-step corrosion engineering. It only requires an overpotential 275 mV to drive the current density of 1000 mA cm-2 with good long-term stability. Theoretical calculations reveal that such good performance is attributable to electron transfer from NiCo-OH to NixFeyO4 which weakens the adsorption energy of reaction intermediate (OOH*) to promote the release of O2 and lowers the free energy barriers for the reaction. Furthermore, a water splitting cell with NiCo-OH@NixFeyO4/FF as anode and CoP@FeP/FF as cathode demonstrates its potential for industrial application. The study presents a general strategy for in situ synthesis of heterojunction catalysts on metal foams using controlled corrosion engineering for various catalytic applications. We would like to thank financial support by The International Postdoctoral Exchange Fellowship Program (No. PC2021035). 2023-06-26T07:53:23Z 2023-06-26T07:53:23Z 2023 Journal Article Li, Z., Zhang, X., Zhang, Z., Chen, P., Zhang, Y. & Dong, X. (2023). Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction. Applied Catalysis B: Environmental, 325, 122311-. https://dx.doi.org/10.1016/j.apcatb.2022.122311 0926-3373 https://hdl.handle.net/10356/169002 10.1016/j.apcatb.2022.122311 2-s2.0-85145303081 325 122311 en Applied Catalysis B: Environmental © 2022 Elsevier B.V. All rights reserved. |
| spellingShingle | Science::Chemistry Heterojunction Catalysts Corrosion Engineering Li, Zhong Zhang, Xinglin Zhang, Zheye Chen, Peng Zhang, Yizhou Dong, Xiaochen Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title | Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title_full | Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title_fullStr | Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title_full_unstemmed | Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title_short | Dual-metal hydroxide@oxide heterojunction catalyst constructed via corrosion engineering for large-current oxygen evolution reaction |
| title_sort | dual metal hydroxide oxide heterojunction catalyst constructed via corrosion engineering for large current oxygen evolution reaction |
| topic | Science::Chemistry Heterojunction Catalysts Corrosion Engineering |
| url | https://hdl.handle.net/10356/169002 |
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