Nanosize SnO2 confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage

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	Nanosize SnO2 confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage
	G. M. Zhou; D. W. Wang; L. Li; N. Li; F. Li; H. M. Cheng
	2013
发表期刊	Nanoscale
ISSN	2040-3364
卷号	5 期号:4 页码:1576-1582
摘要	We explore a hybrid material consisting of SnO2 nanoparticles (NPs) embedded in the porous shells of carbon cages (SnO2-PSCC). The hybrid material exhibits improved kinetics of lithiation-delithiation and high reversible capacity, and excellent cyclic stability without capacity loss over 100 cycles at 500 mA g (1) with a coulombic efficiency close to 100% after the initial cycle. This can be ascribed to the high electrical conductivity, the hierarchical porosity and the confinement effect of the PSCC on the volume change of SnO2 NPs. The material has a large reversible capacity of 460 mA h g(-1) at a high current density of 5 A g(-1) due to a short ion diffusion length in the bulk and large number of inter-pore ion transport channels. These results provide insight into improving the lithium storage performance of SnO2 by facilitating the reaction kinetics and indicate that this hybrid material has great potential for use in high-rate and durable lithium ion batteries.
部门归属	[zhou, guangmin ; li, lu ; li, na ; li, feng ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, da-wei] univ queensland, australian inst bioengn & nanotechnol, arc ctr excellence funct nanomat, 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
关键词	Ion Batteries Anode Material Hollow Nanospheres Amorphous Oxide Mesoporous Sno2 Capacity Performance Nanoparticles Composite Spheres
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71738
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Zhou,D. W. Wang,L. Li,et al. Nanosize SnO2 confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage[J]. Nanoscale,2013,5(4):1576-1582.
APA	G. M. Zhou,D. W. Wang,L. Li,N. Li,F. Li,&H. M. Cheng.(2013).Nanosize SnO2 confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage.Nanoscale,5(4),1576-1582.
MLA	G. M. Zhou,et al."Nanosize SnO2 confined in the porous shells of carbon cages for kinetically efficient and long-term lithium storage".Nanoscale 5.4(2013):1576-1582.