Synthesis of nanocrystalline Li4Ti5O12 by chemical lithiation of anatase nanocrystals and postannealing

被引：57

作者：

Jiang, Chunhai ^{[2
]}

Hosono, Eiji ^{[2
]}

Ichihara, Masaki ^{[1
]}

Honma, Itaru ^{[2
]}

Zhou, Haoshen ^{[2
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778681, Japan

[2] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2008年 / 155卷 / 08期

关键词：

D O I：

10.1149/1.2931524

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Here, we report a chemical process for the preparation of nanosized Li(4)Ti(5)O(12) anode material for Li-ion batteries. Anatase TiO(2) nanopowders were first lithiated in LiOH solution at low temperature and then formed an intermediate Li-Ti-O precursor by oriented attachment, which was subsequently converted to Li(4)Ti(5)O(12) by a short postannealing. The obtained Li(4)Ti(5)O(12) powders were 30 nm in size on average and showed a high phase purity and crystallinity. The electrochemical tests indicated that the synthesized nanosized Li(4)Ti(5)O(12) exhibited a good lithium storage capacity and high cycle stability as well, even at high charge/discharge current rates. (C) 2008 The Electrochemical Society.

引用

页码：A553 / A556

页数：4

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