Herein, we report on a direct electrochemical synthesis of PN composites with Fe2O3, ZnO, and ZnFe2O4 and their use as electrode materials in symmetrical supercapacitors. The active electrode material compositions and morphology were analyzed by SEM, EDX, UV-Vis and FTIR. The electrochemical properties of these composite electrodes were investigated via CV, GCD, and EIS measurements. The results indicate that PN/ZnFe2O4 nanocomposite electrodes possess the highest specific capacitance among the composites. The good electrochemical performance of the nanocomposites is attributed to the microporous structure that facilitates rapid ion diffusion and electrolyte penetration in these pores.