Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix
Exploring highly efficient electrocatalysts for the oxygen evolution reaction (OER) and unveiling their activity origin are pivotal for energy conversion technologies. Herein, atomically distributed Ni sites over a N-doped hollow carbon matrix are reported as a promising electrocatalyst for OER in a...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/138653 |
| _version_ | 1826124152580341760 |
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| author | Zhang, Huabin Liu, Yanyu Chen, Tao Zhang, Jintao Zhang, Jing Lou, David Xiong Wen |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Zhang, Huabin Liu, Yanyu Chen, Tao Zhang, Jintao Zhang, Jing Lou, David Xiong Wen |
| author_sort | Zhang, Huabin |
| collection | NTU |
| description | Exploring highly efficient electrocatalysts for the oxygen evolution reaction (OER) and unveiling their activity origin are pivotal for energy conversion technologies. Herein, atomically distributed Ni sites over a N-doped hollow carbon matrix are reported as a promising electrocatalyst for OER in alkaline conditions. Significantly boosted activity is observed after the decoration of the active Ni sites with well-controlled coordination geometry. Results of X-ray absorption spectroscopy investigation and density functional theory (DFT) calculation reveal that the effective electronic coupling via the Ni-N coordination can move down the Fermi level and lower the adsorption energy of intermediates, thus resulting in the facilitated OER kinetics. |
| first_indexed | 2024-10-01T06:15:59Z |
| format | Journal Article |
| id | ntu-10356/138653 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:15:59Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1386532023-12-29T06:50:29Z Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix Zhang, Huabin Liu, Yanyu Chen, Tao Zhang, Jintao Zhang, Jing Lou, David Xiong Wen School of Chemical and Biomedical Engineering Engineering::Chemical engineering Electronic Coupling Hollow Carbon Matrices Exploring highly efficient electrocatalysts for the oxygen evolution reaction (OER) and unveiling their activity origin are pivotal for energy conversion technologies. Herein, atomically distributed Ni sites over a N-doped hollow carbon matrix are reported as a promising electrocatalyst for OER in alkaline conditions. Significantly boosted activity is observed after the decoration of the active Ni sites with well-controlled coordination geometry. Results of X-ray absorption spectroscopy investigation and density functional theory (DFT) calculation reveal that the effective electronic coupling via the Ni-N coordination can move down the Fermi level and lower the adsorption energy of intermediates, thus resulting in the facilitated OER kinetics. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-05-11T07:08:05Z 2020-05-11T07:08:05Z 2019 Journal Article Zhang, H., Liu, Y., Chen, T., Zhang, J., Zhang, J., & Lou, D. X. W. (2019). Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix. Advanced Materials, 31(48), 1904548-. doi:10.1002/adma.201904548 0935-9648 https://hdl.handle.net/10356/138653 10.1002/adma.201904548 31588630 2-s2.0-85073947996 48 31 1904548 (1 of 7) 1904548 (7 of 7) en Advanced Materials © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. application/pdf |
| spellingShingle | Engineering::Chemical engineering Electronic Coupling Hollow Carbon Matrices Zhang, Huabin Liu, Yanyu Chen, Tao Zhang, Jintao Zhang, Jing Lou, David Xiong Wen Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title | Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title_full | Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title_fullStr | Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title_full_unstemmed | Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title_short | Unveiling the activity origin of electrocatalytic oxygen evolution over isolated Ni atoms supported on a N-doped carbon matrix |
| title_sort | unveiling the activity origin of electrocatalytic oxygen evolution over isolated ni atoms supported on a n doped carbon matrix |
| topic | Engineering::Chemical engineering Electronic Coupling Hollow Carbon Matrices |
| url | https://hdl.handle.net/10356/138653 |
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