Study of dielectric measurements of Bi₄Ti₃O12/polystyrene composites as electrode materials for supercapacitors

Eco-friendly, nontoxic and high-energy storage materials are very important for flexible electrode materials. Bi 4 Ti 3 [Formula: see text] lead-free, perovskite phase may prove suitable as filler in composites for electrode materials because of its large spontaneous polarization. We have synthesized Bi 4 Ti 3 [Formula: see text]/polystyrene (BTO/PS) composites and carried out their structural, morphological and bonding studies with the help of X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), in that order. Dielectric measurements in the broad frequency range of synthesized composites determined by Impedance analyzer. We observed that the dielectric constant of composites increased with filler concentration and decreased with applied field frequency. Bi 4 Ti 3 [Formula: see text]/PS composites can be good electrode materials.