Comparison of the rate capability of nanostructured amorphous and anatase TiO(2) for lithium insertion using anodic TiO(2) nanotube arrays

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	Comparison of the rate capability of nanostructured amorphous and anatase TiO(2) for lithium insertion using anodic TiO(2) nanotube arrays
	H. T. Fang; M. Liu; D. W. Wang; T. Sun; D. S. Guan; F. Li; J. G. Zhou; T. K. Sham; H. M. Cheng
	2009
发表期刊	Nanotechnology
ISSN	0957-4484
卷号	20 期号:22
摘要	Nanostructured amorphous and anatase TiO(2) are both considered as high rate Li-insertion/extraction electrode materials. To clarify which phase is more desirable for lithium ion batteries with both high power and high density, we compare the electrochemical properties of anatase and amorphous TiO(2) by using anodic TiO(2) nanotube arrays (ATNTAs) as electrodes. With the same morphological features, the rate capacity of nanostructured amorphous TiO(2) is higher than that of nanostructured anatase TiO(2) due to the higher Li-diffusion coefficient of amorphous TiO(2) as proved by the electrochemical impedance spectra of an amorphous and an anatase ATNTA electrode. The electrochemical impedance spectra also prove that the electronic conductivity of amorphous TiO(2) is lower than that of anatase TiO(2). These results are helpful in the structural and componential design of all TiO(2) mesoporous structures as anode material in lithium ion batteries. Moreover, all the advantages of the amorphous ATNTA electrode including high rate capacity, desirable cycling performance and the simplicity of its fabrication process indicate that amorphous ATNTA is potentially useful as the anode for lithium ion batteries with both high power and high energy density.
部门归属	[fang, hai-tao; sun, tao; guan, dong-sheng] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china. [liu, min; wang, da-wei; li, feng; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zhou, jigang; sham, tsun-kong] univ western ontario, dept chem, london, on n6a 5b7, canada.;fang, ht (reprint author), harbin inst technol, sch mat sci & engn, 92 w dazhi st, harbin 150001, peoples r china;htfang@hit.edu.cn
关键词	Nanocrystalline Rutile Tio2 Electrochemical Properties High-power Mesoporous Nanocomposite Intercalation Properties Electrode Material Titania Nanotubes Ion insertIon Storage Performance
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31889
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. T. Fang,M. Liu,D. W. Wang,et al. Comparison of the rate capability of nanostructured amorphous and anatase TiO(2) for lithium insertion using anodic TiO(2) nanotube arrays[J]. Nanotechnology,2009,20(22).
APA	H. T. Fang.,M. Liu.,D. W. Wang.,T. Sun.,D. S. Guan.,...&H. M. Cheng.(2009).Comparison of the rate capability of nanostructured amorphous and anatase TiO(2) for lithium insertion using anodic TiO(2) nanotube arrays.Nanotechnology,20(22).
MLA	H. T. Fang,et al."Comparison of the rate capability of nanostructured amorphous and anatase TiO(2) for lithium insertion using anodic TiO(2) nanotube arrays".Nanotechnology 20.22(2009).