Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting
Designing multifunctional catalysts with high activity, stability, and low-cost for energy storage and conversion is a significant challenge. Herein, a trifunctional electrocatalyst is synthesized by anchoring individually dispersed Co atoms on N and S codoped hollow carbon spheres (CoSA/N,S-HCS), w...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147539 |
| _version_ | 1826129789904224256 |
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| author | Zhang, Zheye Zhao, Xiaoxu Xi, Shibo Zhang, Lili Chen, Zhongxin Zeng, Zhiping Huang, Ming Yang, Hongbin Liu, Bin Pennycook, Stephen J. Chen, Peng |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Zhang, Zheye Zhao, Xiaoxu Xi, Shibo Zhang, Lili Chen, Zhongxin Zeng, Zhiping Huang, Ming Yang, Hongbin Liu, Bin Pennycook, Stephen J. Chen, Peng |
| author_sort | Zhang, Zheye |
| collection | NTU |
| description | Designing multifunctional catalysts with high activity, stability, and low-cost for energy storage and conversion is a significant challenge. Herein, a trifunctional electrocatalyst is synthesized by anchoring individually dispersed Co atoms on N and S codoped hollow carbon spheres (CoSA/N,S-HCS), which exhibits outstanding catalytic activity and stability for the oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction. When equipped in liquid or flexible solid-state rechargeable Zn–air batteries, CoSA/N,S-HCS endows them with high power and energy density as well as excellent long-term cycling stability, outperforming benchmark batteries based on a commercial Pt/C + RuO dual catalyst system. Furthermore, a self-driven water splitting system powered by flexible Zn–air batteries is demonstrated using CoSA/N,S-HCS as the sole catalyst, giving a high H2 evolution rate of 184 µmol/h. The state-of-art experimental characterizations and theoretical calculations reveal synergistic cooperation between atomically dispersed Co-N active sites, nearby electron-donating S dopants, and the unique carbon support to single-atom catalysts (SACs). This work demonstrates a general strategy to design various multifunctional SAC systems with a tailored coordination environment. |
| first_indexed | 2024-10-01T07:45:59Z |
| format | Journal Article |
| id | ntu-10356/147539 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:45:59Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1475392023-11-20T03:04:28Z Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting Zhang, Zheye Zhao, Xiaoxu Xi, Shibo Zhang, Lili Chen, Zhongxin Zeng, Zhiping Huang, Ming Yang, Hongbin Liu, Bin Pennycook, Stephen J. Chen, Peng School of Chemical and Biomedical Engineering Science::Chemistry::Physical chemistry::Catalysis Coordination Environment Self-driven Water Splitting Designing multifunctional catalysts with high activity, stability, and low-cost for energy storage and conversion is a significant challenge. Herein, a trifunctional electrocatalyst is synthesized by anchoring individually dispersed Co atoms on N and S codoped hollow carbon spheres (CoSA/N,S-HCS), which exhibits outstanding catalytic activity and stability for the oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction. When equipped in liquid or flexible solid-state rechargeable Zn–air batteries, CoSA/N,S-HCS endows them with high power and energy density as well as excellent long-term cycling stability, outperforming benchmark batteries based on a commercial Pt/C + RuO dual catalyst system. Furthermore, a self-driven water splitting system powered by flexible Zn–air batteries is demonstrated using CoSA/N,S-HCS as the sole catalyst, giving a high H2 evolution rate of 184 µmol/h. The state-of-art experimental characterizations and theoretical calculations reveal synergistic cooperation between atomically dispersed Co-N active sites, nearby electron-donating S dopants, and the unique carbon support to single-atom catalysts (SACs). This work demonstrates a general strategy to design various multifunctional SAC systems with a tailored coordination environment. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) This work was supported by an AME-IRG grant (AMEIRG18-0016) from Agency for Science, Technology and Research (A*STAR) of Singapore and an AcRF tier 2 grant (MOE2017-T2-2-005) from Ministry of Education (Singapore). 2021-04-12T02:06:50Z 2021-04-12T02:06:50Z 2020 Journal Article Zhang, Z., Zhao, X., Xi, S., Zhang, L., Chen, Z., Zeng, Z., Huang, M., Yang, H., Liu, B., Pennycook, S. J. & Chen, P. (2020). Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting. Advanced Energy Materials, 10(48), 2002896-. https://dx.doi.org/10.1002/aenm.202002896 1614-6840 0000-0003-3730-1846 https://hdl.handle.net/10356/147539 10.1002/aenm.202002896 2-s2.0-85096758247 48 10 2002896 en AMEIRG18-0016 MOE2017-T2-2-005 Advanced Energy Materials 10.21979/N9/4XQGA1 © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Science::Chemistry::Physical chemistry::Catalysis Coordination Environment Self-driven Water Splitting Zhang, Zheye Zhao, Xiaoxu Xi, Shibo Zhang, Lili Chen, Zhongxin Zeng, Zhiping Huang, Ming Yang, Hongbin Liu, Bin Pennycook, Stephen J. Chen, Peng Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title | Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title_full | Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title_fullStr | Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title_full_unstemmed | Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title_short | Atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable Zn–air battery and self-driven water splitting |
| title_sort | atomically dispersed cobalt trifunctional electrocatalysts with tailored coordination environment for flexible rechargeable zn air battery and self driven water splitting |
| topic | Science::Chemistry::Physical chemistry::Catalysis Coordination Environment Self-driven Water Splitting |
| url | https://hdl.handle.net/10356/147539 |
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