Improved electrochemical performance of Fe2O3 nanoparticles confined in carbon nanotubes

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	Improved electrochemical performance of Fe2O3 nanoparticles confined in carbon nanotubes
	W. J. Yu; P. X. Hou; F. Li; C. Liu
	2012
发表期刊	Journal of Materials Chemistry
ISSN	0959-9428
卷号	22 期号:27 页码:13756-13763
摘要	A hybrid material of carbon nanotube (CNT)-encapsulated Fe2O3 nanoparticles was prepared by immersing CNTs with two open ends in a Fe(NO3)(3) solution followed by thermal decomposition. It was found that the hollow core of the CNTs was filled with a homogeneous array of Fe2O3 nanoparticles with each nanoparticle being a single crystal. As an anode material of lithium-ion batteries, the Fe2O3-filled CNTs exhibited an improved electrochemical performance in terms of high reversible capacity, excellent cycling stability (811.4 mA h g(-1) after 100 cycles), and high rate capability, compared to that of pure Fe2O3. We attribute this superior electrochemical performance of the Fe2O3-filled CNTs to the small size of the Fe2O3 nanoparticles, the confinement effect of CNTs, sound electrical contact between these two components, as well as the good electrical conductivity and unique porous structure of CNTs that improve the electron and lithium ion transport ability of the anode.
部门归属	[yu, wan-jing; hou, peng-xiang; li, feng; liu, chang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;liu, c (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china.;cliu@imr.ac.cn
关键词	Lithium-ion Batteries Anode Materials Energy-storage Alpha-fe2o3 Iron Intercalation Maghemite Insertion Electrode Graphite
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60422
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. J. Yu,P. X. Hou,F. Li,et al. Improved electrochemical performance of Fe2O3 nanoparticles confined in carbon nanotubes[J]. Journal of Materials Chemistry,2012,22(27):13756-13763.
APA	W. J. Yu,P. X. Hou,F. Li,&C. Liu.(2012).Improved electrochemical performance of Fe2O3 nanoparticles confined in carbon nanotubes.Journal of Materials Chemistry,22(27),13756-13763.
MLA	W. J. Yu,et al."Improved electrochemical performance of Fe2O3 nanoparticles confined in carbon nanotubes".Journal of Materials Chemistry 22.27(2012):13756-13763.