Graphical Analysis of Electrochemical Impedance Spectroscopy of Two ConsecutiveIrreversible Electron Transfers. 2. Zinc Anodic Dissolution in Acid Media
The graphical analysis of the impedance plots is used in the study of the electrodic systems that take placethrough two consecutive single electron transfers. The zinc anodic dissolution is studied by using this procedure.The characteristic points easily allow us to explain and to simulate the impedance behavior of this electrodicsystem according to the steady-state potential and the roughness of the working electrode. The direct procedurefor parametrical identification from the graphical analysis allows us to reduce the time needed for an impedanceexperiment. This graphical analysis is suggested for studying thin coated galvanized steels.