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A commercial cathode material (LiCoO 2 ) was modified by doping with Zn to improve its performance in lithium battery. The structure and morphology of the doped cathode material were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM). The synthesized samples were characterized using X-ray photoelectron spectra (XPS), used to investigate the elementary states on the system. The electrical conductivity variations of doped powders were measured in the temperature range between 30 and 150°C. The 3 mol% Zndoped LiCoO 2 sample shows the highest reversibility capacity (178 mA h g −1 ) after 30 cycles in the voltage window 3.0-4.5 V.

Zinc oxide (ZnO) nano thin films have been deposited by the chemical double-dip technique using aqueous ZnSO 4 and NaOH solutions. The ZnO films were characterized in terms of surface morphology by x-ray diffraction, energy-dispersive x-ray analysis (EDX), the use of a scanning electron microscope (SEM) and atomic force microscope (AFM) for surface morphology. The films exhibited a smooth morphology. The chemical states of oxygen and zinc in the ZnO nano thin films were also investigated by x-ray photoelectron spectroscopy (XPS). In the present investigations, highly textured ZnO thin films with a preferential (002)-orientation were prepared on glass substrates. The deposition conditions were optimized to obtain device-quality films for practical applications.

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