Controllable formation and electrochemical properties of one-dimensional nanostructured spinel Li4Ti5O12

被引：239

作者：

Li, JR

Tang, ZL

Zhang, ZT ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Beijing Inst Space Med Engn, Beijing 100094, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2005年 / 7卷 / 09期

关键词：

spinel Li4Ti5O12; nanotubes; nanowires; controllable formation; hydrothermal ion exchange; electrochemical Li-ion insertion;

D O I：

10.1016/j.elecom.2005.06.012

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Novel spinel Li4Ti5O12 with nanotubes/nanowires morphology and high surface area has been prepared by a low temperature hydrothermal lithium ion exchange processing from hydrogen titanate nanotubes/nanowires precursors. The shape and morphology of spinel Li4Ti5O12 are controllable by varying the hydrogen titanate precursors (nanotube, nanowire, nanorod and nanobelt) from alkaline-hydrothermal approach. The crystal structure and morphology of the as-prepared lithium titanate nanotubes/nanowires have been investigated by TEM, HRTEM and XRD, respectively. The formation temperature of spinel Li4Ti5O12 nanotubes/nanowires is lower than that of bulk materials counterpart prepared by solid-state reaction or by sol-gel processing. The well reversible cyclic voltammetric results of both electrodes indicate enhanced electrochemical kinetics for lithium insertion. These novel one-dimensional nanostructured materials may find promising applications in lithium ion batteries and electrochemical cells. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：894 / 899

页数：6

共 32 条

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