Facile Synthesis of Mesoporous Graphene Materials from Potassium Humate for Supercapacitor Electrodes

Figure 4

GCD curves of MG-X and MC at the current density of 0.041 A·g⁻¹ (a). Rate capabilities of MG-X and MC (b), CV profiles of MG-X at the scan rate of 1 mV·s⁻¹ (c), CV profiles of MG-3 at different scan rates (d), GCD curves at the current density of 0.033 A·g⁻¹ (e), and rate capabilities (f) of MC-X.

(a)

(b)

(c)

(d)

(e)

(f)