Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries
The shuttling effect of polysulfides is one of the major problems of lithium–sulfur (Li–S) batteries, which causes rapid capacity fading during cycling. Modification of the commercial separator with a functional interlayer is an effective strategy to address this issue. Herein, we modified the comme...
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/2/255 |
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| author | Ben Hu Bing Ding Chong Xu Zengjie Fan Derong Luo Peng Li Hui Dou Xiaogang Zhang |
| author_facet | Ben Hu Bing Ding Chong Xu Zengjie Fan Derong Luo Peng Li Hui Dou Xiaogang Zhang |
| author_sort | Ben Hu |
| collection | DOAJ |
| description | The shuttling effect of polysulfides is one of the major problems of lithium–sulfur (Li–S) batteries, which causes rapid capacity fading during cycling. Modification of the commercial separator with a functional interlayer is an effective strategy to address this issue. Herein, we modified the commercial Celgard separator of Li–S batteries with one-dimensional (1D) covalent triazine framework (CTF) and a carbon nanotube (CNT) composite as a functional interlayer. The intertwined CTF/CNT can provide a fast lithium ionic/electronic transport pathway and strong adsorption capability towards polysulfides. The Li–S batteries with the CTF/CNT/Celgard separator delivered a high initial capacity of 1314 mAh g<sup>−1</sup> at 0.1 C and remained at 684 mAh g<sup>−1</sup> after 400 cycles<sup>−1</sup> at 1 C. Theoretical calculation and static-adsorption experiments indicated that the triazine ring in the CTF skeleton possessed strong adsorption capability towards polysulfides. The work described here demonstrates the potential for CTF-based permselective membranes as separators in Li–S batteries. |
| first_indexed | 2024-03-10T00:47:43Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T00:47:43Z |
| publishDate | 2022-01-01 |
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| series | Nanomaterials |
| spelling | doaj.art-1abf9e4c2f5e4c28bae1fcd03d2386d12023-11-23T14:55:25ZengMDPI AGNanomaterials2079-49912022-01-0112225510.3390/nano12020255Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur BatteriesBen Hu0Bing Ding1Chong Xu2Zengjie Fan3Derong Luo4Peng Li5Hui Dou6Xiaogang Zhang7Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaJiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaThe shuttling effect of polysulfides is one of the major problems of lithium–sulfur (Li–S) batteries, which causes rapid capacity fading during cycling. Modification of the commercial separator with a functional interlayer is an effective strategy to address this issue. Herein, we modified the commercial Celgard separator of Li–S batteries with one-dimensional (1D) covalent triazine framework (CTF) and a carbon nanotube (CNT) composite as a functional interlayer. The intertwined CTF/CNT can provide a fast lithium ionic/electronic transport pathway and strong adsorption capability towards polysulfides. The Li–S batteries with the CTF/CNT/Celgard separator delivered a high initial capacity of 1314 mAh g<sup>−1</sup> at 0.1 C and remained at 684 mAh g<sup>−1</sup> after 400 cycles<sup>−1</sup> at 1 C. Theoretical calculation and static-adsorption experiments indicated that the triazine ring in the CTF skeleton possessed strong adsorption capability towards polysulfides. The work described here demonstrates the potential for CTF-based permselective membranes as separators in Li–S batteries.https://www.mdpi.com/2079-4991/12/2/255Li–S batteriesshuttling effectcovalent triazine frameworkfunctional interlayerpolysulfide retention |
| spellingShingle | Ben Hu Bing Ding Chong Xu Zengjie Fan Derong Luo Peng Li Hui Dou Xiaogang Zhang Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries Nanomaterials Li–S batteries shuttling effect covalent triazine framework functional interlayer polysulfide retention |
| title | Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries |
| title_full | Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries |
| title_fullStr | Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries |
| title_full_unstemmed | Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries |
| title_short | Fabrication of a Covalent Triazine Framework Functional Interlayer for High-Performance Lithium–Sulfur Batteries |
| title_sort | fabrication of a covalent triazine framework functional interlayer for high performance lithium sulfur batteries |
| topic | Li–S batteries shuttling effect covalent triazine framework functional interlayer polysulfide retention |
| url | https://www.mdpi.com/2079-4991/12/2/255 |
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