The Effect of Boron Reinforced on the Supercapacitor Performance of RGO/ZnO:B Composite Electrodes

In this study, zinc chloride (ZnCl) was used as a precursor chemical to form boron reinforced zinc oxide (ZnO:B) particles. The supercapacitor performance of the reduced graphene oxide/boron reinforced zinc oxide (RGO/ZnO:B) composite electrodes produced by hydrothermal methods, and the impact of different boron doping ratios on the capacitance, were both examined. The characterization of the RGO/ZnO:B composites containing ۵%, ۱۰%, ۱۵% and ۲۰% boron by weight were performed using X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The capacitance measurements of the electrodes produced were conducted in a ۶ M KOH aqueous solution with a typical three electrode setup using Iviumstat potentiostat/galvanostatic cyclic voltammetry. The specific capacitance value of the ۲۰% reinforced RGO/ZnO:B composite electrode was ۱۵۵.۸۸ F/g, while that of the RGO/ZnO composite electrode was ۳۶.۳۷ F/g. According to this result, the capacitance increased four-fold with a ۲۰% boron doping concentration. Moreover, a longer cycle performance was observed for the RGO/ZnO:B electrodes with higher boron doping concentrations.

Keywords:

RGO/ZnO:B , Boron , composite material , Supercapacitor