Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries
Abstract Due to low cost, high capacity, and high energy density, lithium–sulfur (Li–S) batteries have attracted much attention; however, their cycling performance was largely limited by the poor redox kinetics and low sulfur utilization. Herein, predicted by density functional theory calculations,...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-11-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.306 |
| _version_ | 1797447455172722688 |
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| author | Zhifeng Wang Yajing Yan Yongguang Zhang Yanxu Chen Xianyun Peng Xin Wang Weimin Zhao Chunling Qin Qian Liu Xijun Liu Zhongwei Chen |
| author_facet | Zhifeng Wang Yajing Yan Yongguang Zhang Yanxu Chen Xianyun Peng Xin Wang Weimin Zhao Chunling Qin Qian Liu Xijun Liu Zhongwei Chen |
| author_sort | Zhifeng Wang |
| collection | DOAJ |
| description | Abstract Due to low cost, high capacity, and high energy density, lithium–sulfur (Li–S) batteries have attracted much attention; however, their cycling performance was largely limited by the poor redox kinetics and low sulfur utilization. Herein, predicted by density functional theory calculations, single‐atomic Co‐B2N2 site‐imbedded boron and nitrogen co‐doped carbon nanotubes (SA‐Co/BNC) were designed to accomplish high sulfur loading, fast kinetic, and long service period Li–S batteries. Experiments proved that Co‐B2N2 atomic sites can effectively catalyze lithium polysulfide conversion. Therefore, the electrodes delivered a specific capacity of 1106 mAh g−1 at 0.2 C after 100 cycles and exhibited an outstanding cycle performance over 1000 cycles at 1 C with a decay rate of 0.032% per cycle. Our study offers a new strategy to couple the combined effect of nanocarriers and single‐atomic catalysts in novel coordination environments for high‐performance Li–S batteries. |
| first_indexed | 2024-03-09T13:56:11Z |
| format | Article |
| id | doaj.art-7faa80a116b948d8beff606fe22323a2 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-03-09T13:56:11Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-7faa80a116b948d8beff606fe22323a22023-11-30T13:46:05ZengWileyCarbon Energy2637-93682023-11-01511n/an/a10.1002/cey2.306Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteriesZhifeng Wang0Yajing Yan1Yongguang Zhang2Yanxu Chen3Xianyun Peng4Xin Wang5Weimin Zhao6Chunling Qin7Qian Liu8Xijun Liu9Zhongwei Chen10Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaKey Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaKey Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaKey Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaTianjin Key Lab for Photoelectric Materials & Devices, Institute for New Energy Materials & Low‐Carbon Technologies, School of Materials Science and Engineering Tianjin University of Technology Tianjin ChinaSouth China Academy of Advanced Optoelectronics, International Academy of Optoelectronics at Zhaoqing South China Normal University Guangdong ChinaKey Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaKey Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering Hebei University of Technology Tianjin ChinaInstitute for Advanced Study Chengdu University Chengdu Sichuan ChinaMOE Key Laboratory of New Processing Technology for Non‐Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non‐Ferrous Metals and Featured Materials, School of Resource, Environments and Materials Guangxi University Nanning ChinaDepartment of Chemical Engineering University of Waterloo Waterloo Ontario CanadaAbstract Due to low cost, high capacity, and high energy density, lithium–sulfur (Li–S) batteries have attracted much attention; however, their cycling performance was largely limited by the poor redox kinetics and low sulfur utilization. Herein, predicted by density functional theory calculations, single‐atomic Co‐B2N2 site‐imbedded boron and nitrogen co‐doped carbon nanotubes (SA‐Co/BNC) were designed to accomplish high sulfur loading, fast kinetic, and long service period Li–S batteries. Experiments proved that Co‐B2N2 atomic sites can effectively catalyze lithium polysulfide conversion. Therefore, the electrodes delivered a specific capacity of 1106 mAh g−1 at 0.2 C after 100 cycles and exhibited an outstanding cycle performance over 1000 cycles at 1 C with a decay rate of 0.032% per cycle. Our study offers a new strategy to couple the combined effect of nanocarriers and single‐atomic catalysts in novel coordination environments for high‐performance Li–S batteries.https://doi.org/10.1002/cey2.306carbon nanotubescoordination environment engineeringdensity functional theory calculationlithium–sulfur batteriessingle‐atom catalyst |
| spellingShingle | Zhifeng Wang Yajing Yan Yongguang Zhang Yanxu Chen Xianyun Peng Xin Wang Weimin Zhao Chunling Qin Qian Liu Xijun Liu Zhongwei Chen Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries Carbon Energy carbon nanotubes coordination environment engineering density functional theory calculation lithium–sulfur batteries single‐atom catalyst |
| title | Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries |
| title_full | Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries |
| title_fullStr | Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries |
| title_full_unstemmed | Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries |
| title_short | Single‐atomic Co‐B2N2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium–sulfur batteries |
| title_sort | single atomic co b2n2 sites anchored on carbon nanotube arrays promote lithium polysulfide conversion in lithium sulfur batteries |
| topic | carbon nanotubes coordination environment engineering density functional theory calculation lithium–sulfur batteries single‐atom catalyst |
| url | https://doi.org/10.1002/cey2.306 |
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