Sheet-like morphology CuCo2O4 bimetallic nanoparticles adorned on graphene oxide composites for symmetrical energy storage applications

•CuO@NGO and CuCo2O4 synthesis via a thermal reduction process.•The composite electrodes were showed the excellent electrochemical behaviors.•The morphological properties of the composite material enhanced the specific capacitance and stability.•The composites electrodes displayed the specific capacitance values of 196 and 475 F g−1.•The composite electrodes show the excellent cyclic stability up to 10,000 cycles with 96.5% retention. Synthesis of CuCo2O4@NGO synthesis via a thermal reduction process for supercapacitor application [Display omitted] Sheet-like morphology of copper cobaltite/N-doped graphene oxide materials composite was synthesized by a thermal reduction process improved by sonication. These composite nanostructured materials were confirmed by analytical methods. The composite materials were fabricated as electrode for supercapacitor applications via CV, GCD, and EIS analysis in the presence of 5 M KOH solution. The CuO@NGO and CuCo2O4@NGO composite electrodes employing excellent morphology showed improved capacitance of (196 and 475) F.g−1, respectively, at 0.5 A.g−1, and excellent cyclic stability and retention (96.5%) in the continuous 10,000 charge–discharge cycles. The electrochemical description of the synthesized CuO@NGO and CuCo2O4@NGO materials composite showed excellent electrochemical properties and cyclic stability in the presence of 5 M KOH electrolyte. The composite design of CuO@NGO and CuCo2O4@NGO materials was developed for the symmetric electrochemical supercapacitor in the presence of 5 M KOH electrolyte.