Figure 4
From: Design and Fabrication of Hierarchically Porous Carbon with a Template-free Method

Cyclic voltammograms (a), galvanostatic charge/discharge curves measured at various current densities (b), nyquist plot of electrochemical impedance (c) and variations of the specific capacitance versus cycle number (at the current density of 10 A/g) (d) of Fru-40-900 in 6 M KOH.