Effect of zirconium oxide nanoparticles on surface morphology and energy storage of electrochemical capacitors

In this study, the effect of mixing zirconium oxide nanoparticles and carbon black particles on surface morphology and electrochemical performance of prepared electrodes were investigated. Scanning electron microscopy was used to characterize microstructure and nature of nanocomposites. Charge stored (q) on different nanoparticle containing electrodes was calculated and the effect of surface morphology on charge storage was discussed. It is concluded that charge stored on the electrode shows an n-like change by increasing nanoparticle content of electrodes. Addition of nanoparticle increases q⁎O/q⁎T (from 0.05 to 0.18) which confirms the higher current response and higher voltage reversal at the end potentials.