If a porous insulating film is present on an electrode surface, the film component may be modeled with a

Question

Quizplus · Accepted Answer

A porous insulating film on an electrode surface can be modeled by a capacitor in parallel with a series combination of resistor and Warburg impedance. The capacitor represents the charging and discharging of the electrical double layer at the electrode/electrolyte interface, while the resistor and Warburg impedance represent the resistance and diffusion of ions through the porous film. So, the C option is the best choice which includes all of these components in one model.

If a Porous Insulating Film Is Present on an Electrode