Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries

doi:10.1016/j.jallcom.2018.03.331

IMR OpenIR

	Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries
	Hong, Xiaodong 1,2; Li, Shunli 2; Tang, Xiaonan 1,3; Sun, Zhenhua 1; Li, Feng 1
通讯作者	Li, Feng(fli@imr.ac.cn)
	2018-06-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	749 页码:586-593
摘要	Cobalt disulfide (CoS2) has been revealed as strong adsorption and activation sites for polar polysulfides, which effectively accelerates the redox reactions of polysulfides in lithium-sulfur (Li-S) batteries. As an ideal sulfur host, a three-dimensional (3D) graphene framework is adopted for high-performance Li-S batteries. Considering the special function of the CoS2 nanoparticles and the advantages of a 3D porous graphene framework, a porous CoS2/reduced graphene oxide (CoS2/rGO) binder-free sulfur host is prepared by a bottom-up assembly and hydrothermal treatment. The porous rGO film is stacked by interconnected graphene sheets, and the CoS2 nanoparticles are dispersed on the graphene sheets uniformly, which effectively obstructs the stacking of graphene sheets. As a binder-free sulfur host, the porous CoS2/rGO sulfur host combines the sufficient electron conductivity of the porous rGO framework and the sulfur immobilization interaction of the CoS2 nanoparticles. This host material demonstrates an initial discharge capacity of 993.5 mAh g(-1) and a capacity of 806.7 mAh g(-1) after 110 cycles at 0.5 C. Both the capacity and cycling stability of the CoS2/rGO cathode were greatly improved over that of rGO. Furthermore, the bottom-up assembly approach provides a novel opportunity for preparing self-supporting graphene-based nanocomposite electrodes. (C) 2018 Elsevier B.V. All rights reserved.
关键词	Bottom-up assembly Lithium-sulfur batteries Cobalt disulfide Graphene
资助者	Ministry of Science and Technology of China ; NSFC ; Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams
DOI	10.1016/j.jallcom.2018.03.331
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2016YFA0200100] ; Ministry of Science and Technology of China[2016YFB0100100] ; Ministry of Science and Technology of China[2014CB932402] ; NSFC[51525206] ; NSFC[51521091] ; NSFC[51372253] ; NSFC[51403094] ; NSFC[U1401243] ; Chinese Academy of Sciences[XDA09010104] ; Chinese Academy of Sciences[KGZD-EW-T06] ; CAS/SAFEA International Partnership Program for Creative Research Teams
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000432666200068
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：62[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/321006/128143
专题	中国科学院金属研究所
通讯作者	Li, Feng
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Liaoning Tech Univ, Coll Mat Sci & Engn, 47 Zhonghua Rd, Fuxing 123000, Peoples R China 3.Shandong Univ Technol, Sch Chem Engn, 266 Cunxi Rd, Zibo 255000, Peoples R China
推荐引用方式 GB/T 7714	Hong, Xiaodong,Li, Shunli,Tang, Xiaonan,et al. Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,749:586-593.
APA	Hong, Xiaodong,Li, Shunli,Tang, Xiaonan,Sun, Zhenhua,&Li, Feng.(2018).Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries.JOURNAL OF ALLOYS AND COMPOUNDS,749,586-593.
MLA	Hong, Xiaodong,et al."Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries".JOURNAL OF ALLOYS AND COMPOUNDS 749(2018):586-593.