Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution
The development of efficient and cost-effective electrocatalysts toward the oxygen evolution reaction (OER) is highly desirable for clean energy and fuel conversion. Herein, the facile preparation of Ni single atoms embedded hollow S/N-doped carbon macroporous fibers (Ni SAs@S/N-CMF) as efficient ca...
| 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/10356/166117 |
| _version_ | 1811688273359142912 |
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| author | Zhao, Yafei Guo, Yan Lu, Xue Feng Luan, Deyan Gu, Xiaojun Lou, Xiong Wen David |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Zhao, Yafei Guo, Yan Lu, Xue Feng Luan, Deyan Gu, Xiaojun Lou, Xiong Wen David |
| author_sort | Zhao, Yafei |
| collection | NTU |
| description | The development of efficient and cost-effective electrocatalysts toward the oxygen evolution reaction (OER) is highly desirable for clean energy and fuel conversion. Herein, the facile preparation of Ni single atoms embedded hollow S/N-doped carbon macroporous fibers (Ni SAs@S/N-CMF) as efficient catalysts for OER through pyrolysis of designed CdS-NiSx/polyacrylonitrile composite fibers is reported. Specifically, CdS provides the sulfur source for the doping of polyacrylonitrile-derived carbon matrix and simultaneously creates the hollow macroporous structure, while NiSx is first reduced to nanoparticles and finally evolves into single Ni atoms through the atom migration-trapping strategy. Benefiting from the abundantly exposed single Ni atoms and hollow macroporous structure, the resultant Ni SAs@S/N-CMF electrocatalysts deliver outstanding activity and stability for OER. Specifically, it needs an overpotential of 285 mV to achieve the benchmark current density of 10 mA cm−2 with a small Tafel slope of 50.8 mV dec−1. |
| first_indexed | 2024-10-01T05:29:35Z |
| format | Journal Article |
| id | ntu-10356/166117 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:29:35Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1661172023-06-21T07:53:23Z Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution Zhao, Yafei Guo, Yan Lu, Xue Feng Luan, Deyan Gu, Xiaojun Lou, Xiong Wen David School of Chemical and Biomedical Engineering School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Macroporous Materials Oxygen Evolution Reaction The development of efficient and cost-effective electrocatalysts toward the oxygen evolution reaction (OER) is highly desirable for clean energy and fuel conversion. Herein, the facile preparation of Ni single atoms embedded hollow S/N-doped carbon macroporous fibers (Ni SAs@S/N-CMF) as efficient catalysts for OER through pyrolysis of designed CdS-NiSx/polyacrylonitrile composite fibers is reported. Specifically, CdS provides the sulfur source for the doping of polyacrylonitrile-derived carbon matrix and simultaneously creates the hollow macroporous structure, while NiSx is first reduced to nanoparticles and finally evolves into single Ni atoms through the atom migration-trapping strategy. Benefiting from the abundantly exposed single Ni atoms and hollow macroporous structure, the resultant Ni SAs@S/N-CMF electrocatalysts deliver outstanding activity and stability for OER. Specifically, it needs an overpotential of 285 mV to achieve the benchmark current density of 10 mA cm−2 with a small Tafel slope of 50.8 mV dec−1. 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). X.J.G. acknowledges the funding support from the National Natural Science Foundation of China (22162019), and the Science and Technology Projects of Inner Mongolia Autonomous Region (2021GG0195). 2023-04-17T07:46:07Z 2023-04-17T07:46:07Z 2022 Journal Article Zhao, Y., Guo, Y., Lu, X. F., Luan, D., Gu, X. & Lou, X. W. D. (2022). Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution. Advanced Materials, 34(35), 2203442-. https://dx.doi.org/10.1002/adma.202203442 0935-9648 https://hdl.handle.net/10356/166117 10.1002/adma.202203442 35 34 2203442 en MOE2019-T2-2-049 Advanced Materials © 2022 Wiley-VCH GmbH. All rights reserved. This is the peer reviewed version of the following article: Zhao, Y., Guo, Y., Lu, X. F., Luan, D., Gu, X. & Lou, X. W. D. (2022). Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution. Advanced Materials, 34(35), 2203442-, which has been published in final form at https://doi.org/10.1002/adma.202203442. 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 Macroporous Materials Oxygen Evolution Reaction Zhao, Yafei Guo, Yan Lu, Xue Feng Luan, Deyan Gu, Xiaojun Lou, Xiong Wen David Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title | Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title_full | Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title_fullStr | Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title_full_unstemmed | Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title_short | Exposing single Ni atoms in hollow S/N-doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| title_sort | exposing single ni atoms in hollow s n doped carbon macroporous fibers for highly efficient electrochemical oxygen evolution |
| topic | Science::Chemistry Macroporous Materials Oxygen Evolution Reaction |
| url | https://hdl.handle.net/10356/166117 |
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