Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes
The extensive use of sodium-ion batteries has made it important to develop high-performance anode materials. Owing to their good sustainability, low cost, and excellent electrochemical properties, hard carbon materials are expected to be a good choice, especially biomass-derived hard carbon. In this...
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MDPI AG
2025-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/10/734 |
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| author | Yuanfeng Liu Shuai Chen Chengzhi Zhang Guochun Li Junfeng Liu Yong Wang |
| author_facet | Yuanfeng Liu Shuai Chen Chengzhi Zhang Guochun Li Junfeng Liu Yong Wang |
| author_sort | Yuanfeng Liu |
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| description | The extensive use of sodium-ion batteries has made it important to develop high-performance anode materials. Owing to their good sustainability, low cost, and excellent electrochemical properties, hard carbon materials are expected to be a good choice, especially biomass-derived hard carbon. In this study, we successfully synthesized a coir-based carbon nanosphere as an anode material. The hard carbon has a low degree of structural ordering, small particle size, and multiple pore networks for easy sulfur doping compared to the conventional direct high-temperature sulfur doping. The material has a high reversible capacity of 536 mAh g<sup>−1</sup> and an initial Coulombic efficiency of 53%, maintaining a reversible capacity of 308 mAh g<sup>−1</sup> at a high current density of 5 A g<sup>−1</sup>, achieving a capacity retention of 90.3% after 1000 cycles. The performance enhancement stems from a combination of enlarged layer spacing, an increased specific surface area, enhanced porosity, and doped sulfur atoms. This study provides an effective strategy for the conversion of biomass waste into high-performance sodium-ion anode material batteries. |
| format | Article |
| id | doaj-art-882ed5409ac54b74b4c2af046b23cfef |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-882ed5409ac54b74b4c2af046b23cfef2025-08-20T03:48:01ZengMDPI AGNanomaterials2079-49912025-05-01151073410.3390/nano15100734Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion AnodesYuanfeng Liu0Shuai Chen1Chengzhi Zhang2Guochun Li3Junfeng Liu4Yong Wang5Institute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaThe extensive use of sodium-ion batteries has made it important to develop high-performance anode materials. Owing to their good sustainability, low cost, and excellent electrochemical properties, hard carbon materials are expected to be a good choice, especially biomass-derived hard carbon. In this study, we successfully synthesized a coir-based carbon nanosphere as an anode material. The hard carbon has a low degree of structural ordering, small particle size, and multiple pore networks for easy sulfur doping compared to the conventional direct high-temperature sulfur doping. The material has a high reversible capacity of 536 mAh g<sup>−1</sup> and an initial Coulombic efficiency of 53%, maintaining a reversible capacity of 308 mAh g<sup>−1</sup> at a high current density of 5 A g<sup>−1</sup>, achieving a capacity retention of 90.3% after 1000 cycles. The performance enhancement stems from a combination of enlarged layer spacing, an increased specific surface area, enhanced porosity, and doped sulfur atoms. This study provides an effective strategy for the conversion of biomass waste into high-performance sodium-ion anode material batteries.https://www.mdpi.com/2079-4991/15/10/734biomasshard carbonsodium-ion batteryanodehydrothermalsulfur |
| spellingShingle | Yuanfeng Liu Shuai Chen Chengzhi Zhang Guochun Li Junfeng Liu Yong Wang Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes Nanomaterials biomass hard carbon sodium-ion battery anode hydrothermal sulfur |
| title | Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes |
| title_full | Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes |
| title_fullStr | Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes |
| title_full_unstemmed | Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes |
| title_short | Shredded-Coconut-Derived Sulfur-Doped Hard Carbon via Hydrothermal Processing for High-Performance Sodium Ion Anodes |
| title_sort | shredded coconut derived sulfur doped hard carbon via hydrothermal processing for high performance sodium ion anodes |
| topic | biomass hard carbon sodium-ion battery anode hydrothermal sulfur |
| url | https://www.mdpi.com/2079-4991/15/10/734 |
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