Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries
Corn by-products have been widely studied as a precursor of biomass carbon in energy storage systems. Without further doping or coating processes corn silk can achieve a high electrochemical performance when used as an anode of sodium and potassium ion batteries. Nonetheless, there is no report abou...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422008122 |
| _version_ | 1811188900724473856 |
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| author | Hui Zhang Yin Li Geng Gao Tingyu Song Keyu Zhang Yaochun Yao |
| author_facet | Hui Zhang Yin Li Geng Gao Tingyu Song Keyu Zhang Yaochun Yao |
| author_sort | Hui Zhang |
| collection | DOAJ |
| description | Corn by-products have been widely studied as a precursor of biomass carbon in energy storage systems. Without further doping or coating processes corn silk can achieve a high electrochemical performance when used as an anode of sodium and potassium ion batteries. Nonetheless, there is no report about corn silk used as a cathode for lithium-sulfur batteries. In this work, corn silk was made into porous carbon and used as sulfur scaffolds and modified materials for commercial separator in lithium-sulfur batteries. Corn silk possesses a natural pipe shape which grants the porous carbon a high specific surface area. With a simple dissolution crystallization method approximately 80% of the sulfur could be easily accommodated onto the porous carbon. The hierarchic pores not only limited the particle size of the sulfur to nanometers, but also buffered the volume expansion of sulfur and absorbed it tightly. Furthermore, with an ultralight porous carbon modified separator, significant improvement was achieved in the utilization of sulfur, cycling stability and alleviation of the polysulfide shuttling efficiently. The batteries delivered a specific capacity of 1290 mAh g-1 in the first discharge and 746 mAh g-1 after 100 cycles. The good electrochemical performance can be ascribed to the rational design of battery configuration. |
| first_indexed | 2024-04-11T14:26:57Z |
| format | Article |
| id | doaj.art-d27e41df5941445083f469c7c89b73e1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T14:26:57Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d27e41df5941445083f469c7c89b73e12022-12-22T04:18:51ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011915901599Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteriesHui Zhang0Yin Li1Geng Gao2Tingyu Song3Keyu Zhang4Yaochun Yao5The National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Material and Architecture College, Guizhou Normal University, Guiyang 550025, ChinaThe National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, ChinaThe National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, ChinaThe National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, ChinaThe National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, ChinaThe National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Corresponding author.Corn by-products have been widely studied as a precursor of biomass carbon in energy storage systems. Without further doping or coating processes corn silk can achieve a high electrochemical performance when used as an anode of sodium and potassium ion batteries. Nonetheless, there is no report about corn silk used as a cathode for lithium-sulfur batteries. In this work, corn silk was made into porous carbon and used as sulfur scaffolds and modified materials for commercial separator in lithium-sulfur batteries. Corn silk possesses a natural pipe shape which grants the porous carbon a high specific surface area. With a simple dissolution crystallization method approximately 80% of the sulfur could be easily accommodated onto the porous carbon. The hierarchic pores not only limited the particle size of the sulfur to nanometers, but also buffered the volume expansion of sulfur and absorbed it tightly. Furthermore, with an ultralight porous carbon modified separator, significant improvement was achieved in the utilization of sulfur, cycling stability and alleviation of the polysulfide shuttling efficiently. The batteries delivered a specific capacity of 1290 mAh g-1 in the first discharge and 746 mAh g-1 after 100 cycles. The good electrochemical performance can be ascribed to the rational design of battery configuration.http://www.sciencedirect.com/science/article/pii/S2238785422008122Corn silk-based porous carbonCathode matrixModified separatorLithium-sulfur batteriesEnergy storage and conversion |
| spellingShingle | Hui Zhang Yin Li Geng Gao Tingyu Song Keyu Zhang Yaochun Yao Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries Journal of Materials Research and Technology Corn silk-based porous carbon Cathode matrix Modified separator Lithium-sulfur batteries Energy storage and conversion |
| title | Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries |
| title_full | Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries |
| title_fullStr | Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries |
| title_full_unstemmed | Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries |
| title_short | Composite cathodes and modified separators based on corn-silk-based porous carbon for high performance lithium–sulfur batteries |
| title_sort | composite cathodes and modified separators based on corn silk based porous carbon for high performance lithium sulfur batteries |
| topic | Corn silk-based porous carbon Cathode matrix Modified separator Lithium-sulfur batteries Energy storage and conversion |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422008122 |
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