3.3 Characterization of EDLC
The electrolyte layer of the supercapacitor cell, constructed of an optimised ion-conducting polymer, contained the non-porous carbon active material positioned between two symmetric electrodes. Low-frequency impedance spectroscopy (IS) and cyclic voltammetry (CV), which were used to determine the specific capacitance of the EDLC device, were used to assess its performance.