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Self-supporting porous CoS2/rGO sulfur host prepared by bottom-up assembly for lithium-sulfur batteries
Hong, Xiaodong1,2; Li, Shunli2; Tang, Xiaonan1,3; Sun, Zhenhua1; Li, Feng1
Corresponding AuthorLi, Feng(fli@imr.ac.cn)
2018-06-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume749Pages:586-593
AbstractCobalt 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.
KeywordBottom-up assembly Lithium-sulfur batteries Cobalt disulfide Graphene
Funding OrganizationMinistry of Science and Technology of China ; NSFC ; Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams
DOI10.1016/j.jallcom.2018.03.331
Indexed BySCI
Language英语
Funding ProjectMinistry 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 Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000432666200068
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128139
Collection中国科学院金属研究所
Corresponding AuthorLi, Feng
Affiliation1.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
Recommended Citation
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.
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