Preparation and electrochemical characterization of LiCoO2 by the emulsion drying method

S. T. Myung, N. Kumagai, S. Komaba, H. T. Chung

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Fine powders of LiCoO2 were successfully synthesized through an emulsion drying method. The oxide powders were characterized by thermogravimetric-differential thermal analyses, X-ray diffractometry, scanning electron microscopy, elemental analysis and electrochemical method including charge-discharge cycling. By post-annealing the powders obtained by the emulsion drying method in the temperature range 600 to approximately 900 °C, we obtained LiCoO2 powder which has a layer structure (R3̄m) and consists of fine particles with submicrometre order in diameter. The charge-discharge characteristics as a cathode for lithium ion battery depended on the post-annealing temperature. LiCoO2 powder made by the emulsion drying method displays a good electrochemical performance, suggesting that this soft chemistry approach has the potential to synthesize a high quality electrode material.

Original languageEnglish
Pages (from-to)1081-1085
Number of pages5
JournalJournal of Applied Electrochemistry
Issue number9
Publication statusPublished - 1 Sep 2000

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