Figure further illustrates the effect of electrode potential on the CPE parameter. Around the PZC, the system behaves as an ideal capacitor, but as the potential increases, the deviation from ideal capacitive behavior grows, leading to a more pronounced CPE response. At sufficiently high potentials, the non-uniformity in conductivity extends further from the electrode due to the thickening of the compact layer, while permittivity saturation remains confined to this region (Figure ). As a result, the spatial separation between the regions of conductivity and permittivity non-uniformity increases, gradually restoring a more ideal capacitive behavior.