Figure 7

(a) Energy densities calculated at different current densities, (b) Ragone plot for EFAC1 and EFAC2, (c) Charge–discharge profiles of EFAC1 and EFAC2 at 1^st and 5000^th cycle at a current density of 3 A/g, and (d) The cycle life of the supercapacitor measured at a current density of 3 A/g.