Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites
Single-atom catalysts (SACs) are being pursued as economical electrocatalysts. However, their low active-site loading, poor interactions, and unclear catalytic mechanism call for significant advances. Herein, atomically dispersed Ni/Co dual sites anchored on nitrogen-doped carbon (a-NiCo/NC) hollow...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/163271 |
| _version_ | 1811681415521107968 |
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| author | Pei, Zhihao Lu, Xue Feng Zhang, Huabin Li, Yunxiang Luan, Deyan Lou, David Xiong Wen |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Pei, Zhihao Lu, Xue Feng Zhang, Huabin Li, Yunxiang Luan, Deyan Lou, David Xiong Wen |
| author_sort | Pei, Zhihao |
| collection | NTU |
| description | Single-atom catalysts (SACs) are being pursued as economical electrocatalysts. However, their low active-site loading, poor interactions, and unclear catalytic mechanism call for significant advances. Herein, atomically dispersed Ni/Co dual sites anchored on nitrogen-doped carbon (a-NiCo/NC) hollow prisms are rationally designed and synthesized. Benefiting from the atomically dispersed dual-metal sites and their synergistic interactions, the obtained a-NiCo/NC sample exhibits superior electrocatalytic activity and kinetics towards the oxygen evolution reaction. Moreover, density functional theory calculations indicate that the strong synergistic interactions from heteronuclear paired Ni/Co dual sites lead to the optimization of the electronic structure and the reduced reaction energy barrier. This work provides a promising strategy for the synthesis of high-efficiency atomically dispersed dual-site SACs in the field of electrochemical energy storage and conversion. |
| first_indexed | 2024-10-01T03:40:35Z |
| format | Journal Article |
| id | ntu-10356/163271 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:40:35Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1632712023-12-29T06:46:52Z Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites Pei, Zhihao Lu, Xue Feng Zhang, Huabin Li, Yunxiang Luan, Deyan Lou, David Xiong Wen School of Chemical and Biomedical Engineering School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Dual-Metal Sites Hollow Prisms Single-atom catalysts (SACs) are being pursued as economical electrocatalysts. However, their low active-site loading, poor interactions, and unclear catalytic mechanism call for significant advances. Herein, atomically dispersed Ni/Co dual sites anchored on nitrogen-doped carbon (a-NiCo/NC) hollow prisms are rationally designed and synthesized. Benefiting from the atomically dispersed dual-metal sites and their synergistic interactions, the obtained a-NiCo/NC sample exhibits superior electrocatalytic activity and kinetics towards the oxygen evolution reaction. Moreover, density functional theory calculations indicate that the strong synergistic interactions from heteronuclear paired Ni/Co dual sites lead to the optimization of the electronic structure and the reduced reaction energy barrier. This work provides a promising strategy for the synthesis of high-efficiency atomically dispersed dual-site SACs in the field of electrochemical energy storage and conversion. Ministry of Education (MOE) Submitted/Accepted version X.W.L. acknowledges the funding support from the Ministry of Education of Singapore through the Academic Research Fund (AcRF)Tier-2 grant (MOE2019-T2-2-049). 2022-11-29T08:59:02Z 2022-11-29T08:59:02Z 2022 Journal Article Pei, Z., Lu, X. F., Zhang, H., Li, Y., Luan, D. & Lou, D. X. W. (2022). Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites. Angewandte Chemie International Edition, 61(40), e202207537-. https://dx.doi.org/10.1002/anie.202207537 1433-7851 https://hdl.handle.net/10356/163271 10.1002/anie.202207537 35894631 2-s2.0-85136484440 40 61 e202207537 en MOE2019-T2-2-049 Angewandte Chemie International Edition © 2022 Wiley-VCHGmbH. All rights reserved. This is the peer reviewed version of the following article: Pei, Z., Lu, X. F., Zhang, H., Li, Y., Luan, D. & Lou, D. X. W. (2022). Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites. Angewandte Chemie International Edition, 61(40), e202207537-, which has been published in final form at https://doi.org/10.1002/anie.202207537. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Science::Chemistry Dual-Metal Sites Hollow Prisms Pei, Zhihao Lu, Xue Feng Zhang, Huabin Li, Yunxiang Luan, Deyan Lou, David Xiong Wen Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title | Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title_full | Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title_fullStr | Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title_full_unstemmed | Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title_short | Highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic Ni/Co dual sites |
| title_sort | highly efficient electrocatalytic oxygen evolution over atomically dispersed synergistic ni co dual sites |
| topic | Science::Chemistry Dual-Metal Sites Hollow Prisms |
| url | https://hdl.handle.net/10356/163271 |
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