Fig. 5: Time evolution of electrode surface O2 concentration, coverage and current density under electrolyte film with different thicknesses.

a the εc of corrosion products is 1.0. b the εc of corrosion products is 0.4. c the εc of corrosion products is 0.01. 1 electrode surface O2 concentration. 2 electrode surface coverage. 3 electrode surface current density.