Preparative Chemistry of N-containing Porous Carbon Nanofibers for Capacity Improvement in Lithium-sulfur Battery
Preparative Chemistry of N-containing Porous Carbon Nanofibers for Capacity Improvement in Lithium-sulfur Battery
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DOI：
10.7503/cjcu20190549
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Jinghai Liu
中科院分区：
文献类型：
--
作者：
Xia Wang;Yanji Liu;Yongfeng Jia;Lei Ji;Quanli Hu;Limei Duan;Jinghai Liu
Mesoporous nitrogen-containing carbon nanofibers (MT-C) were prepared via carbonization of polyacrylonitrile (PAN) nanofibers at 1000 degrees C in a nitrogen atmosphere with polyvinylpyrrolidone (PVP) acting as pore-making agent. Under condition of m(PVP)/m(PAN) = 2 1 , MT-C-0. 4 with the largest specific surface area of 190. 8 m(2)/g exhibits the initial discharge specific capacity of 1269. 4 mA.h/g at 0. 05C. After 300 cycles at 0. 5C , the specific capacity maintains at 658. 3 mA.h/g with a capacity decay rate of 0. 14% per cycle. In addition, when the sulfur areal loading amount is 1 mg/cm(2), the MT-C-0. 4/S presents the best electrochemical performances.
