Thin film of PANI-CuO nanocomposites were successfully prepared by the chemical oxidative method of the aniline in acidic medium with potassium dichromate (K2Cr2O7) as an oxidant. The composition, morphology and structure of the PANI-CuO nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), EDS-spectrum and cyclic voltammetery technique. Due to formation of H-bonding between amine group of PANI polymer chain and CuO, the characteristic FTIR peaks of PANI were found to shift to higher or lower wave number in PANI–CuO composites. XRD results indicated that the crystallinity of PANI was more pronounced after addition of CuO. In scanning electron micrograph (SEM) analysis the micrographs clearly reveal that granules are developed in the PANI – CuO film. CV curve present the super capacitive properties of PANI-CuO thin films prepared in this research.