The Reference Electrode Impedance Effect on the Impedance of the Working Electrode in Corrosion Inhibition Studies

Author

Department of Surface Coatings and Corrosion, Institute for Color Science and Technology

Abstract

This work intends to study the possible effect of reference electrode impedance on the working electrode impedance. For this purpose, various electrode/electrolyte systems were examined by electrochemical impedance spectroscopy (EIS) using reference electrodes having different impedance. In the experiments, working electrode impedance were around 1 and 10 kohm.cm2; and the reference electrode impedance were in the range of 1-10 kohm. The results showed that utilizing reference electrode with highest impedance resulted in distortion from actual impedance spectra in high or low frequency region which is of particular importance for corrosion inhibition studies.

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