Fig. 7. CV curves of the (a) CPC₁₀ and (d) CPR₁₀ electrodes at different scan rates. (c) Areal capacitances of the two electrodes at different scan rates. GCD curves for the (b) CPC₁₀ and (e) CPR₁₀ electrodes at different current densities. (f) Gravimetric capacitances of the two electrodes at different current densities. All data were obtained under two-electrode testing conditions with PVA/H₃PO₄ gel electrolyte.