Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries
Physicochemical confinement and catalytic conversion of lithium polysulfides (LiPSs) are crucial to suppress the shuttle effect and enhance the redox kinetics of lithium-sulfur (Li-S) batteries. In this study, a NH4Cl-assisted pyrolysis strategy is developed to fabricate highly mesoporous N-rich car...
| 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/10356/166120 |
| _version_ | 1811695521522253824 |
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| author | Li, Yunxiang Zeng, Yinxiang Chen, Ye Luan, Deyan Gao, Shuyan Lou, Xiong Wen David |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Li, Yunxiang Zeng, Yinxiang Chen, Ye Luan, Deyan Gao, Shuyan Lou, Xiong Wen David |
| author_sort | Li, Yunxiang |
| collection | NTU |
| description | Physicochemical confinement and catalytic conversion of lithium polysulfides (LiPSs) are crucial to suppress the shuttle effect and enhance the redox kinetics of lithium-sulfur (Li-S) batteries. In this study, a NH4Cl-assisted pyrolysis strategy is developed to fabricate highly mesoporous N-rich carbon (designed as NC(p)) featuring thin outer shells and porous inner networks, on which single-Ni atoms are anchored to form an excellent sulfur host (designed as Ni-NC(p)) for Li-S batteries. During pyrolysis, the pyrolytic HCl from confined NH4Cl within ZIF-8 will in situ etch ZIF-8 to produce rich mesoporous in the carbonized product NC(p). The mesoporous Ni-NC(p) enables favorable electron/ion transfer, high sulfur loading, and effective confinement of LiPSs, while the catalytic effect of single-Ni species enhances the redox kinetics of LiPSs. As a result, the sulfur cathode based on the Ni-NC(p) host delivers obviously improved Li-S battery performance with high specific capacity, good rate capability, and cycling stability. |
| first_indexed | 2024-10-01T07:24:48Z |
| format | Journal Article |
| id | ntu-10356/166120 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:24:48Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1661202023-06-21T08:03:17Z Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries Li, Yunxiang Zeng, Yinxiang Chen, Ye Luan, Deyan Gao, Shuyan Lou, Xiong Wen David School of Chemical and Biomedical Engineering School of Chemistry, Chemical Engineering and Biotechnology Science::Chemistry Li-S Battery Lithium Polysulfide Physicochemical confinement and catalytic conversion of lithium polysulfides (LiPSs) are crucial to suppress the shuttle effect and enhance the redox kinetics of lithium-sulfur (Li-S) batteries. In this study, a NH4Cl-assisted pyrolysis strategy is developed to fabricate highly mesoporous N-rich carbon (designed as NC(p)) featuring thin outer shells and porous inner networks, on which single-Ni atoms are anchored to form an excellent sulfur host (designed as Ni-NC(p)) for Li-S batteries. During pyrolysis, the pyrolytic HCl from confined NH4Cl within ZIF-8 will in situ etch ZIF-8 to produce rich mesoporous in the carbonized product NC(p). The mesoporous Ni-NC(p) enables favorable electron/ion transfer, high sulfur loading, and effective confinement of LiPSs, while the catalytic effect of single-Ni species enhances the redox kinetics of LiPSs. As a result, the sulfur cathode based on the Ni-NC(p) host delivers obviously improved Li-S battery performance with high specific capacity, good rate capability, and cycling stability. 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). 2023-04-17T08:17:35Z 2023-04-17T08:17:35Z 2022 Journal Article Li, Y., Zeng, Y., Chen, Y., Luan, D., Gao, S. & Lou, X. W. D. (2022). Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries. Angewandte Chemie International Edition, 61(47), e202212680-. https://dx.doi.org/10.1002/anie.202212680 1433-7851 https://hdl.handle.net/10356/166120 10.1002/anie.202212680 47 61 e202212680 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: Li, Y., Zeng, Y., Chen, Y., Luan, D., Gao, S. & Lou, X. W. D. (2022). Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries. Angewandte Chemie International Edition, 61(47), e202212680-, which has been published in final form at https://doi.org/10.1002/anie.202212680. 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 Li-S Battery Lithium Polysulfide Li, Yunxiang Zeng, Yinxiang Chen, Ye Luan, Deyan Gao, Shuyan Lou, Xiong Wen David Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title | Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title_full | Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title_fullStr | Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title_full_unstemmed | Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title_short | Mesoporous N-rich carbon with single-Ni atoms as a multifunctional sulfur host for Li-S batteries |
| title_sort | mesoporous n rich carbon with single ni atoms as a multifunctional sulfur host for li s batteries |
| topic | Science::Chemistry Li-S Battery Lithium Polysulfide |
| url | https://hdl.handle.net/10356/166120 |
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