| 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 Author | Li, Feng(fli@imr.ac.cn) |
| 2018-06-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 749Pages:586-593 |
| Abstract | 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. |
| Keyword | Bottom-up assembly Lithium-sulfur batteries Cobalt disulfide Graphene |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000432666200068 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/128143 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Feng |
| Affiliation | 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 |
| 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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