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
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
收藏
页码:A553 / A556
页数:4
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