화학공학소재연구정보센터
Journal of Applied Electrochemistry, Vol.30, No.9, 1081-1085, 2000
Preparation and electrochemical characterization of LiCoO2 by the emulsion drying method
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 similar to 900 degrees C, we obtained LiCoO2 powder which has a layer structure (R (3) over bar m) 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.