Electrochemical properties of the LiCoO2 powder obtained by sol–gel method

Lithiated layered transitional metal oxide materials of the LiMO2 type and especially LiCoO2 presents interesting specific properties as high energy density, long life cycle, and constant discharging properties in a wide range of working conditions as well as a good safety. These properties made these materials excellent candidates as active compounds for high capacity cathode materials for rechargeable lithium batteries. present work, LiCoO2 powder was prepared by sol–gel method using inorganic precursors, LiNO3 and Co(NO3)2·6H2O, and citric acid as chelating agent. epared powders were studied by DTA/TG analysis. Based on the DTA/TG results, several thermal treatments between 300 and 700 °C were performed. IR spectroscopy, X-ray diffraction determinations were performed along with electrochemical measurements. rrelation between the structure of the obtained powders, determined by the applied thermal treatment, and the electrochemical behavior was established.