Sepiolite/CNT/S@PANI composite with stable network structure for high performance lithium sulfur batteries

doi:10.1039/c8ra01925h

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	Sepiolite/CNT/S@PANI composite with stable network structure for high performance lithium sulfur batteries
	Yuan, Guolong 3; Pan, Junan 3; Zhang, Yaguang 3; Yu, Junxi 3; He, Yanjia 3; Su, Yong 3; Zhou, Qi 1; Jin, Hongyun 4; Xie, Shuhong 2
刊名	RSC Advances
	2018
卷号	8 期号:32 页码:17950-17957
关键词	Carbon nanotubes Cathodes Efficiency Ion exchange Lithium batteries Polyaniline Vacuum applications
ISSN号	2046-2069
DOI	10.1039/c8ra01925h
英文摘要	Composite materials with a stable network structure consisting of natural sepiolite (Sep) powders, carbon nanotubes (CNTs) and conductive polymer (PANI) have been successfully synthesized using a simple vacuum heat treatment and chemical oxidation method, and they have been used as cathode materials for lithium sulfur batteries. It is found that Sep/CNT/S@PANI composites possess high initial discharge capacity, good cyclic stability and good rate performance. The initial discharge capacity of the Sep/CNT/S@PANI-II composite is about 1100 mA h g-1 at 2C, and remained at 650 mA h g-1 after 300 cycles, and the corresponding coulombic efficiency is above 93%. Such performance is attributed to specific porous structure, outstanding adsorption characteristics, and excellent ion exchange capability of sepiolite, as well as excellent conductivity of CNT. Furthermore, the PANI coating has a pinning effect for sulfur, which enhances the utilization of the active mass and improves the cycling stability and the coulombic efficiency of the composites at high current rates. © 2018 The Royal Society of Chemistry.
WOS研究方向	Chemistry
语种	英语
出版者	Royal Society of Chemistry
WOS记录号	WOS:000435824500039
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151193]
专题	兰州理工大学
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, Gansu; 730050, China; 2.Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan; 411105, China 3.Hunan Provincial Key Laboratory of Thin Film Materials and Devices, Xiangtan University, Xiangtan, Hunan; 411105, China; 4.Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, Hubei; 430074, China;
推荐引用方式 GB/T 7714	Yuan, Guolong,Pan, Junan,Zhang, Yaguang,et al. Sepiolite/CNT/S@PANI composite with stable network structure for high performance lithium sulfur batteries[J]. RSC Advances,2018,8(32):17950-17957.
APA	Yuan, Guolong.,Pan, Junan.,Zhang, Yaguang.,Yu, Junxi.,He, Yanjia.,...&Xie, Shuhong.(2018).Sepiolite/CNT/S@PANI composite with stable network structure for high performance lithium sulfur batteries.RSC Advances,8(32),17950-17957.
MLA	Yuan, Guolong,et al."Sepiolite/CNT/S@PANI composite with stable network structure for high performance lithium sulfur batteries".RSC Advances 8.32(2018):17950-17957.