fig6

Figure 6. The supercapacitive properties of AC/MAC in the CB system. (A) The CV curves of CB measured at different voltage windows; (B) the CV curves of CB at different scan rates (5-100 mV/s); (C) the GCD curves of CB at different current densities; (D) the Ragone plot CB compared with other studies; (E) the cycling stability of CB; and (F) the electrochemical impedance spectroscopy of CB^{[10,12,16,35]}. AC: Activated carbon; MAC: modified activated carbon; CB: coin battery; CV: cyclic voltammetry; GCD: galvanostatic charge-discharge.