Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries

Zhou, Guangmin, Yin, Li-Chang, Wang, Da-Wei, Li, Lu, Pei, Songfeng, Gentle, Ian Ross, Li, Feng and Cheng, Hui-Ming (2013) Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries. Acs Nano, 7 6: 5367-5375. doi:10.1021/nn401228t


Author Zhou, Guangmin
Yin, Li-Chang
Wang, Da-Wei
Li, Lu
Pei, Songfeng
Gentle, Ian Ross
Li, Feng
Cheng, Hui-Ming
Title Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries
Journal name Acs Nano   Check publisher's open access policy
ISSN 1936-0851
1936-086X
Publication date 2013-06-01
Year available 2013
Sub-type Article (original research)
DOI 10.1021/nn401228t
Open Access Status DOI
Volume 7
Issue 6
Start page 5367
End page 5375
Total pages 9
Place of publication Washington , DC, United States
Publisher American Chemical Society
Language eng
Abstract Graphene–sulfur (G–S) hybrid materials with sulfur nanocrystals anchored on interconnected fibrous graphene are obtained by a facile one-pot strategy using a sulfur/carbon disulfide/alcohol mixed solution. The reduction of graphene oxide and the formation/binding of sulfur nanocrystals were integrated. The G–S hybrids exhibit a highly porous network structure constructed by fibrous graphene, many electrically conducting pathways, and easily tunable sulfur content, which can be cut and pressed into pellets to be directly used as lithium–sulfur battery cathodes without using a metal current-collector, binder, and conductive additive. The porous network and sulfur nanocrystals enable rapid ion transport and short Li+ diffusion distance, the interconnected fibrous graphene provides highly conductive electron transport pathways, and the oxygen-containing (mainly hydroxyl/epoxide) groups show strong binding with polysulfides, preventing their dissolution into the electrolyte based on first-principles calculations. As a result, the G–S hybrids show a high capacity, an excellent high-rate performance, and a long life over 100 cycles. These results demonstrate the great potential of this unique hybrid structure as cathodes for high-performance lithium–sulfur batteries.
Keyword graphene
sulfur nanocrystal
hybrid
oxygen functional group
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2011CB932604
50921004
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 351 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 360 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 11 Aug 2013, 10:17:21 EST by System User on behalf of Aust Institute for Bioengineering & Nanotechnology