Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier
Abstract The formation of the soluble polysulfides (Na2Sn, 4 ≤ n ≤ 8) causes poor cycling performance for room temperature sodium–sulfur (RT Na–S) batteries. Moreover, the formation of insoluble polysulfides (Na2Sn, 2 ≤ n < 4) can slow down the reaction kinetics and terminate the discharge reacti...
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| Format: | Article |
| Language: | English |
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Wiley
2020-06-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201903246 |
| _version_ | 1818029310467899392 |
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| author | Qiubo Guo Shuang Li Xuejun Liu Haochen Lu Xiaoqing Chang Hongshen Zhang Xiaohui Zhu Qiuying Xia Chenglin Yan Hui Xia |
| author_facet | Qiubo Guo Shuang Li Xuejun Liu Haochen Lu Xiaoqing Chang Hongshen Zhang Xiaohui Zhu Qiuying Xia Chenglin Yan Hui Xia |
| author_sort | Qiubo Guo |
| collection | DOAJ |
| description | Abstract The formation of the soluble polysulfides (Na2Sn, 4 ≤ n ≤ 8) causes poor cycling performance for room temperature sodium–sulfur (RT Na–S) batteries. Moreover, the formation of insoluble polysulfides (Na2Sn, 2 ≤ n < 4) can slow down the reaction kinetics and terminate the discharge reaction before it reaches the final product. In this work, coffee residue derived activated ultramicroporous coffee carbon (ACC) material loading with small sulfur molecules (S2–4) as cathode material for RT Na–S batteries is reported. The first principle calculations indicate the space confinement of the slit ultramicropores can effectively suppress the formation of polysulfides (Na2Sn, 2 ≤ n ≤ 8). Combining with in situ UV/vis spectroscopy measurements, one‐step reaction RT Na–S batteries with Na2S as the only and final discharge product without polysulfides formation are demonstrated. As a result, the ultramicroporous carbon loaded with 40 wt% sulfur delivers a high reversible specific capacity of 1492 mAh g−1 at 0.1 C (1 C = 1675 mA g−1). When cycled at 1 C rate, the carbon–sulfur composite electrode exhibits almost no capacity fading after 2000 cycles with 100% coulombic efficiency, revealing excellent cycling stability and reversibility. The superb cycling stability and rate performance demonstrate ultramicropore confinement can be an effective strategy to develop high performance cathode for RT Na–S batteries. |
| first_indexed | 2024-12-10T05:17:39Z |
| format | Article |
| id | doaj.art-44ceb0287323423394d888156c9affc7 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-10T05:17:39Z |
| publishDate | 2020-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-44ceb0287323423394d888156c9affc72022-12-22T02:00:55ZengWileyAdvanced Science2198-38442020-06-01711n/an/a10.1002/advs.201903246Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon CarrierQiubo Guo0Shuang Li1Xuejun Liu2Haochen Lu3Xiaoqing Chang4Hongshen Zhang5Xiaohui Zhu6Qiuying Xia7Chenglin Yan8Hui Xia9School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSoochow Institute for Energy and Materials Innovations College of Energy Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow University Suzhou 215006 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaSoochow Institute for Energy and Materials Innovations College of Energy Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow University Suzhou 215006 ChinaSchool of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 ChinaAbstract The formation of the soluble polysulfides (Na2Sn, 4 ≤ n ≤ 8) causes poor cycling performance for room temperature sodium–sulfur (RT Na–S) batteries. Moreover, the formation of insoluble polysulfides (Na2Sn, 2 ≤ n < 4) can slow down the reaction kinetics and terminate the discharge reaction before it reaches the final product. In this work, coffee residue derived activated ultramicroporous coffee carbon (ACC) material loading with small sulfur molecules (S2–4) as cathode material for RT Na–S batteries is reported. The first principle calculations indicate the space confinement of the slit ultramicropores can effectively suppress the formation of polysulfides (Na2Sn, 2 ≤ n ≤ 8). Combining with in situ UV/vis spectroscopy measurements, one‐step reaction RT Na–S batteries with Na2S as the only and final discharge product without polysulfides formation are demonstrated. As a result, the ultramicroporous carbon loaded with 40 wt% sulfur delivers a high reversible specific capacity of 1492 mAh g−1 at 0.1 C (1 C = 1675 mA g−1). When cycled at 1 C rate, the carbon–sulfur composite electrode exhibits almost no capacity fading after 2000 cycles with 100% coulombic efficiency, revealing excellent cycling stability and reversibility. The superb cycling stability and rate performance demonstrate ultramicropore confinement can be an effective strategy to develop high performance cathode for RT Na–S batteries.https://doi.org/10.1002/advs.201903246insoluble polysulfideslow self‐dischargeroom‐temperature sodium–sulfur batteriesultramicroporesultramicroporous coffee carbon |
| spellingShingle | Qiubo Guo Shuang Li Xuejun Liu Haochen Lu Xiaoqing Chang Hongshen Zhang Xiaohui Zhu Qiuying Xia Chenglin Yan Hui Xia Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier Advanced Science insoluble polysulfides low self‐discharge room‐temperature sodium–sulfur batteries ultramicropores ultramicroporous coffee carbon |
| title | Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier |
| title_full | Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier |
| title_fullStr | Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier |
| title_full_unstemmed | Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier |
| title_short | Ultrastable Sodium–Sulfur Batteries without Polysulfides Formation Using Slit Ultramicropore Carbon Carrier |
| title_sort | ultrastable sodium sulfur batteries without polysulfides formation using slit ultramicropore carbon carrier |
| topic | insoluble polysulfides low self‐discharge room‐temperature sodium–sulfur batteries ultramicropores ultramicroporous coffee carbon |
| url | https://doi.org/10.1002/advs.201903246 |
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