Indonesia Conference Directory

Supercapacitor is one of the energy storage devices with excellent of storing electrical energy, long cycle stability, high energy density, easy construction, environmentally friendly, has the ability to store fast power and longer discharge. Graphene, activated carbon, zinc oxide, and Mn2O3 are good materials which commonly used as supercapacitor electrodes. ZnO-C-based supercapacitor research is currently underway and shows considerable capacitance. Addition of manganese oxide such as Mn2O3 in ZnO-C film will produce good specific capacitance because carbon will reduce the poor conductivity of manganese oxide. This study aims to determine the effect of adding Mn2O3 in the ZnO-C-x(Mn2O3) system to the performance of the supercapacitor produced. Mn2O3 nanoparticles were synthesized using the chemical co-precipitation method. Characterization of ZnO-C-x(Mn2O3) symmetric supercapacitor was carried out using XRD, SEM-EDX and Cyclic voltammetry. The results indicated that as the increase in mass addition of Mn2O3 caused the volume of the ZnO-C-x(Mn2O3) film to increase exponentially. The morphology of the ZnO-C-x(Mn2O3) film was the porous film with the highest porosity of 81.67%. Along with the increasing mass addition of Mn2O3, the specific capacitance of the ZnO-C-x(Mn2O3) film increased exponentially from 1.07 to 3.46 F/g. In addition, along with the increase in mass addition Mn2O3, the energy density of the ZnO-C-x(Mn2O3) film increased exponentially from 0.38 to 1.23 Wh/kg.