In the intense search for high-energy density cathode materials for use in lithium-ion rechargeable battery technology, LiCoO2 has become the first, and one of the most promising, for commercial applications1. Sol-gel chemistry has recently evolved as a powerful approach for preparing inorganic materials such as glasses and ceramics2. The improved sol-gel process is based on the ability of certain weak acids to form polybasic acid chelates with various cations. These chelates can undergo polyesterification when heated in a polyhydroxyl alcohol to form a solid polymeric resin through which the cations are uniformly distributed. Thus the resin retains homogeneity on the atomic scale and may be calcined at low temperature to yield fine particulate oxides. Using this method, it is possible to obtain phase-pure ultrafine crystalline nanophases after firing the ploymeric precursors at some appointed temperature for several hours. In this work we reported that nanosized LiCoO2 were prepared by the improved sol-gel process. ……
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