Synthesis of nanocrystalline Li4 Ti5 O12 by chemical lithiation of anatase nanocrystals and postannealing

Chunhai Jiang, Eiji Hosono, Masaki Ichihara, Itaru Homma, Haoshen Zhou

研究成果: Article査読

57 被引用数 (Scopus)

抄録

Here, we report a chemical process for the preparation of nanosized Li4 Ti5 O12 anode material for Li-ion batteries. Anatase TiO2 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 Li4 Ti5 O12 by a short postannealing. The obtained Li4 Ti5 O12 powders were 30 nm in size on average and showed a high phase purity and crystallinity. The electrochemical tests indicated that the synthesized nanosized Li4 Ti5 O12 exhibited a good lithium storage capacity and high cycle stability as well, even at high charge/discharge current rates.

本文言語English
ジャーナルJournal of the Electrochemical Society
155
8
DOI
出版ステータスPublished - 2008 7 11
外部発表はい

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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