A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance
Abstract The market demand for energy pushes researchers to pay a lot of attention to Li‐S batteries. However, the ‘shuttle effect’, the corrosion of lithium anodes, and the formation of lithium dendrites make the poor cycling performances (especially under high current densities and high sulfur loa...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202301386 |
| _version_ | 1797754731905417216 |
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| author | Shuang Xia Jie Song Qi Zhou Lili Liu Jilei Ye Tao Wang Yuhui Chen Yankai Liu Yuping Wu Teunis van Ree |
| author_facet | Shuang Xia Jie Song Qi Zhou Lili Liu Jilei Ye Tao Wang Yuhui Chen Yankai Liu Yuping Wu Teunis van Ree |
| author_sort | Shuang Xia |
| collection | DOAJ |
| description | Abstract The market demand for energy pushes researchers to pay a lot of attention to Li‐S batteries. However, the ‘shuttle effect’, the corrosion of lithium anodes, and the formation of lithium dendrites make the poor cycling performances (especially under high current densities and high sulfur loading) of Li‐S batteries, which limit their commercial applications. Here, a separator is prepared and modified with Super P and LTO (abbreviation SPLTOPD) through a simple coating method. The LTO can improve the transport ability of Li+ cations, and the Super P can reduce the charge transfer resistance. The prepared SPLTOPD can effectively barrier the pass‐through of polysulfides, catalyze the reactions of polysulfides into S2−, and increase the ionic conductivity of the Li‐S batteries. The SPLTOPD can also prevent the aggregation of insulating sulfur species on the surface of the cathode. The assembled Li‐S batteries with the SPLTOPD can cycle 870 cycles at 5 C with the capacity attenuation of 0.066% per cycle. When the sulfur loading is up to 7.6 mg cm−2, the specific discharge capacity at 0.2 C can reach 839 mAh g−1, and the surface of lithium anode after 100 cycles does not show the existence lithium dendrites or a corrosion layer. This work provides an effective way for the preparation of commercial separators for Li‐S batteries. |
| first_indexed | 2024-03-12T17:37:49Z |
| format | Article |
| id | doaj.art-8d04d9aebcbd4f53b770819524977456 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-12T17:37:49Z |
| publishDate | 2023-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-8d04d9aebcbd4f53b7708195249774562023-08-04T07:49:49ZengWileyAdvanced Science2198-38442023-08-011022n/an/a10.1002/advs.202301386A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical PerformanceShuang Xia0Jie Song1Qi Zhou2Lili Liu3Jilei Ye4Tao Wang5Yuhui Chen6Yankai Liu7Yuping Wu8Teunis van Ree9State Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaSchool of Energy and Environment South East University Nanjing Jiangsu 211189 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaHunan Bolt Power New Energy Co. Ltd., Dianjiangjun Industrial Park Louxing District Hunan Road Loudi 417000 ChinaState Key Laboratory of Materials‐oriented Chemical Engineering School of Energy Science and Engineering Nanjing Tech University Nanjing Jiangsu 211816 ChinaDepartment of Chemistry University of Venda Thohoyandou 0950 South AfricaAbstract The market demand for energy pushes researchers to pay a lot of attention to Li‐S batteries. However, the ‘shuttle effect’, the corrosion of lithium anodes, and the formation of lithium dendrites make the poor cycling performances (especially under high current densities and high sulfur loading) of Li‐S batteries, which limit their commercial applications. Here, a separator is prepared and modified with Super P and LTO (abbreviation SPLTOPD) through a simple coating method. The LTO can improve the transport ability of Li+ cations, and the Super P can reduce the charge transfer resistance. The prepared SPLTOPD can effectively barrier the pass‐through of polysulfides, catalyze the reactions of polysulfides into S2−, and increase the ionic conductivity of the Li‐S batteries. The SPLTOPD can also prevent the aggregation of insulating sulfur species on the surface of the cathode. The assembled Li‐S batteries with the SPLTOPD can cycle 870 cycles at 5 C with the capacity attenuation of 0.066% per cycle. When the sulfur loading is up to 7.6 mg cm−2, the specific discharge capacity at 0.2 C can reach 839 mAh g−1, and the surface of lithium anode after 100 cycles does not show the existence lithium dendrites or a corrosion layer. This work provides an effective way for the preparation of commercial separators for Li‐S batteries.https://doi.org/10.1002/advs.202301386Li‐S batterieslithium anode corrosionlithium dendritesmodificationseparatorshuttle effect |
| spellingShingle | Shuang Xia Jie Song Qi Zhou Lili Liu Jilei Ye Tao Wang Yuhui Chen Yankai Liu Yuping Wu Teunis van Ree A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance Advanced Science Li‐S batteries lithium anode corrosion lithium dendrites modification separator shuttle effect |
| title | A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance |
| title_full | A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance |
| title_fullStr | A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance |
| title_full_unstemmed | A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance |
| title_short | A Separator with Double Coatings of Li4Ti5O12 and Conductive Carbon for Li‐S Battery of Good Electrochemical Performance |
| title_sort | separator with double coatings of li4ti5o12 and conductive carbon for li s battery of good electrochemical performance |
| topic | Li‐S batteries lithium anode corrosion lithium dendrites modification separator shuttle effect |
| url | https://doi.org/10.1002/advs.202301386 |
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