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

IMR OpenIR

	Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries
	G. M. Zhou; L. C. Yin; D. W. Wang; L. Li; S. F. Pei; I. R. Gentle; F. Li; H. M. Cheng
	2013
发表期刊	Acs Nano
ISSN	1936-0851
卷号	7 期号:6 页码:5367-5375
摘要	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.
部门归属	[zhou, guangmin ; yin, li-chang ; li, lu ; pei, songfeng ; li, feng ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, da-wei ; gentle, ian ross] univ queensland, aibn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia. [gentle, ian ross] univ queensland, sch chem & mol biosci, brisbane, qld 4072, australia. ; li, f (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; fli@imr.ac.cn ; cheng@imr.ac.cn
关键词	Graphene Sulfur Nanocrystal Hybrid Oxygen Functional Group Energy Storage Lithium-sulfur Battery Li-s Batteries Total-energy Calculations Wave Basis-set Electrode Materials Reduced Graphene Oxide Cathode Ion Composites Storage
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71739
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Zhou,L. C. Yin,D. W. Wang,et al. Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries[J]. Acs Nano,2013,7(6):5367-5375.
APA	G. M. Zhou.,L. C. Yin.,D. W. Wang.,L. Li.,S. F. Pei.,...&H. M. Cheng.(2013).Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries.Acs Nano,7(6),5367-5375.
MLA	G. M. Zhou,et al."Fibrous Hybrid of Graphene and Sulfur Nanocrystals for High-Performance Lithium-Sulfur Batteries".Acs Nano 7.6(2013):5367-5375.