Fig. 8From: Supercapacitors with alternating current line-filtering performanceReproduced with permission from Ref [73]. Copyright 2016. The Royal Society of Chemistrya The flowchart of the preparation of graphitized CMK-3; b transmission electron microscopy (TEM) image of CMK-3; c dependent frequency and phase angle of the CMK-3 supercapacitor; d plot of the impedance phase angle versus the frequency; e areal capacitance with respect to current density; and f comparison of a CMK-3/CNT supercapacitor with a commercial AEC based on volumetric capacitance at different voltages.Back to article page