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 4; Jin, Hongyun 1; Xie, Shuhong 2
刊名	RSC ADVANCES
	2018
卷号	8 期号:32 页码:17950-17957
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.
资助项目	Engineering Research Center of Nano-Geo Materials of Ministry of Education of China University of Geosciences[NGM2018KF008]
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000435824500039
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32940]
专题	外国语学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Xie, Shuhong
作者单位	1.China Univ Geosci, Minist Educ, Engn Res Ctr Nanogeomat, Wuhan 430074, Hubei, Peoples R China 2.Xiangtan Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Hunan, Peoples R China 3.Xiangtan Univ, Hunan Prov Key Lab Thin Film Mat & Devices, Xiangtan 411105, Hunan, Peoples R China 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R 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.