Thermodynamic Aspects of Redox Reactions on Electrodes Coated with Thin, Ion Exchanging Polymer Films

Abstract

Electrodes modified with various anion exchanging polymer films were investigated in contact with electrolytes containing the redox system . With electrochemical techniques the concentrations of the redox ions in the polymer films were determined. A thermodynamic basis was derived on which the experimental data could be analyzed. Thus the work associated with the transfer of the redox ions from the solution into the ion exchanger could be obtained. These data are related to the selectivity of the investigated ion exchangers.