Identifying the dominant electrochemical reaction in electrochemical impedance spectroscopy

Electrochemical Impedance Spectroscopy (EIS) is frequently used for the study of electrochemical reactions and associated mechanisms phenomena. To a specific reaction, it important to choose DC potential at which measured impedance data carries information mostly related that reaction. One first questions asked was: different potentials, reaction contributes most recorded spectra, cathodic or anodic? For example, corrosion where current density equal anodic density, does carry about two equally? The following development methodology essential as step analysis an This consists new model predicts dominant any potential. experimental results provided confirm validity model.