Structural, characterization and dielectric properties of flexible nanocomposite films for electrical applications

In this study, flexible PVP/SA/Cu 2 O consisting of polyvinylpyrrolidone (PVP), sodium alginate (SA) and copper oxide (Cu 2 O) nanoparticles was fabricated using the solution casting preparation method. Then the PVP/SA/Cu 2 O composites were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier infra-red spectroscopy (FTIR) techniques. The XRD indicates the types of phases and components of the crystalline and amorphous material. The SEM and FTIR show the successful fabrication of PVP/SA/Cu 2 O composites. The dielectric parameters of the composite PVP/SA/Cu 2 O were evaluated at frequencies of 20[Formula: see text]Hz to 6[Formula: see text]MHz. The conductivity increased from [Formula: see text] for PVP/SA to [Formula: see text] for PVP/SA/Cu 2 O, and the dielectric constant increased from 1600 to 5697. In addition, the relaxation time decreased from [Formula: see text] [Formula: see text]s for PVP/SA to [Formula: see text] [Formula: see text]s for PVP/SA/Cu 2 O. This work focused on preparing eco-friendly flexible PVP/SA/Cu2O composite for dielectric devices. The novelty of this study lies in fabricating composite materials of integration of PVP and SA with Cu 2 O for enhanced dielectric behavior. The results obtained show that the dielectric parameters of the PVP/SA/Cu 2 O were improved, making these materials suitable for application in energy storage uses.