Fig. 5. EDLC characteristics of ITO/PVI–KOH/ITO planar MSC as function of film thickness; (a) CV curves with a constant scan rate of 50 mV s−1. (b) Scan rate dependent volumetric capacitance (CV) plots. (c) Equivalent charging-discharging effect of planar MSCs with different current densities (j). (d) Capacitance retention as function of charge–discharge cycles. (e) Nyquist plots of planar MSC. (f) Film Thickness dependent ionic conductivity (error bar is estimated by three different planar MSCs with similar device geometry).
