Faradaic Impedance of Fast Electrode Processes as Measured by an Impedance Bridge Using an Inductor

Abstract

An impedance bridge using an inductor in parallel with the cell is proposed for accurate measurement of kinetic parameters of fast electrode processes. The theory and method of analysis are given in detail. Its applicability was proved up to at least 50 kc, and possibly at higher frequencies. The kinetic parameters obtained by this method for the electrode reaction Cd2++2e=Cd(Hg) in m Na2SO4 at the D. M. E. were α=0.17, and k°=0.064 cm/sec (25°C).