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Lithiated layered transitional metal oxide materials of the LiMO 2 type and especially LiCoO 2 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. In the present work, LiCoO 2 powder was prepared by sol–gel method using inorganic precursors, LiNO 3 and Co(NO 3 ) 2 ·6H 2 O, and citric acid as chelating agent. The prepared 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. The correlation between the structure of the obtained powders, determined by the applied thermal treatment, and the electrochemical behavior was established. |
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