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Biomass Derived Highly-Ordered Carbon Tube as Cathode Material for High Performance Lithium-Sulfur Batteries |
Author Name | Affiliation | E-mail | ZHANG Meng-Yuan | 1 College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha 410083, China | | YOU Xiao-Long | 1 College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | LIU Li-Jun | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | Maru Dessie Walle | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China | | LI Ya-Juan | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha 410083, China | yajuanli@csu.edu.cn | LIU You-Nian | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha 410083, China | liuyounian@csu.edu.cn |
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Abstract: A novel highly ordered carbon tube (OCT) arrays derived from palm tree fiber by carbonization and activation with KOH was prepared and used as hosts for lithium sulfur battery. The OCT possessed large specific area and pore volume, which could effectively store sulfur. The method was clean, facile and low cost. Moreover, the S@OCT composite exhibited admirable electrochemical performances. The S@OCT with 65%(w/w) sulfur delivered an initial discharge capacity of 1 255.2 mAh·g-1 (1.8 mAh·cm-2) and retained 756.9 mAh·g-1 (1.09 mAh·cm-2) at the current rate of 0.2C after 100 cycles with a high coulomb efficiency. What's more, when tested at 5C, its initial capacity was up to 649.1 mAh·g-1 (0.93 mA h·cm-2) and retained 504.2 mAh·g1 (0.72 mAh·cm-2) after 100 cycles. |
Keywords: lithium battery sulfur electrode biomass carbon materials high coulomb efficiency |
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ZHANG Meng-Yuan,YOU Xiao-Long,LIU Li-Jun,Maru Dessie Walle,LI Ya-Juan,LIU You-Nian.Biomass Derived Highly-Ordered Carbon Tube as Cathode Material for High Performance Lithium-Sulfur Batteries[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1493-1499. |
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