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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
Source PublicationNanoscale
ISSN2040-3364
Volume5Issue:4Pages:1576-1582
AbstractWe 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.
description.department[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
KeywordIon Batteries Anode Material Hollow Nanospheres Amorphous Oxide Mesoporous Sno2 Capacity Performance Nanoparticles Composite Spheres
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71738
Collection中国科学院金属研究所
Recommended Citation
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.
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