From interlayer to lightweight capping layer: Rational design of mesoporous TiO2 threaded with CNTs for advanced Li-S batteries

doi:10.1016/j.carbon.2018.11.064

IMR OpenIR

	From interlayer to lightweight capping layer: Rational design of mesoporous TiO2 threaded with CNTs for advanced Li-S batteries
	Li, Na 1; Chen, Zhongxu 1; Chen, Fei 3; Hu, Guangjian 2; Wang, Shaogang 2; Sun, Zhenhua 2; Sun, Xudong 1; Li, Feng 2
通讯作者	Sun, Xudong(xdsun@mail.neu.edu.cn) ; Li, Feng(fli@imr.ac.cn)
	2019-03-01
发表期刊	CARBON
ISSN	0008-6223
卷号	143 页码:523-530
摘要	Lithium-sulfur (Li-S) battery with high theoretical energy density has been considered a promising candidate of the next-generation energy storage systems. Its commercialization, however, is mainly hindered by the fast capacity decay induced by the polysulfide shuttle behavior between two electrodes. Herein, we report a scalable production of mesoporous TiO2-carbon nanotubes (MTO-CNTs) in which each mesoporous oval-shaped TiO2 particle is threaded with a CNT in the axis direction. As its one dimensional structure with a self-weaving feature, two different approaches enlisting the use of MTOCNTs as an interlayer between cathode and separator or a capping layer coated directly onto the sulfur cathode, both aiming to suppress the polysulfide shuttle. The threaded structure provides excellent interfacial contact between TiO2 and CNTs allowing CNTs to provide fast and continuous electron pathway toward the TiO2-polysulfide polar adsorption interface, thus dynamically accelerating the redox conversion of the trapped polysulfides. As a result of the synergetic effect, the cell with an ultra-lightweight MTO-CNTs capping layer (merely 0.06mg cm(-2)) exhibits a long-term cyclability with a low capacity decay of 0.07% per cycle within 500 cycles at 0.5 C. (C) 2018 Elsevier Ltd. All rights reserved.
资助者	National Natural Science Foundation of China ; Ministry of Science and Techenology of the People's of China ; Research Funds for the Central Universities
DOI	10.1016/j.carbon.2018.11.064
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51602044] ; National Natural Science Foundation of China[51525206] ; Ministry of Science and Techenology of the People's of China[2016YFA0200100] ; Ministry of Science and Techenology of the People's of China[2016YFB0100100] ; Research Funds for the Central Universities[N170205021]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000456710500059
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131269
专题	中国科学院金属研究所
通讯作者	Sun, Xudong; Li, Feng
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Dalian Univ, Sch Environm & Chem Engn, Dalian 116622, Peoples R China
推荐引用方式 GB/T 7714	Li, Na,Chen, Zhongxu,Chen, Fei,et al. From interlayer to lightweight capping layer: Rational design of mesoporous TiO2 threaded with CNTs for advanced Li-S batteries[J]. CARBON,2019,143:523-530.
APA	Li, Na.,Chen, Zhongxu.,Chen, Fei.,Hu, Guangjian.,Wang, Shaogang.,...&Li, Feng.(2019).From interlayer to lightweight capping layer: Rational design of mesoporous TiO2 threaded with CNTs for advanced Li-S batteries.CARBON,143,523-530.
MLA	Li, Na,et al."From interlayer to lightweight capping layer: Rational design of mesoporous TiO2 threaded with CNTs for advanced Li-S batteries".CARBON 143(2019):523-530.