RELAXATION ELECTRODE PROCESSES WITHOUT A PRIORI SEPARATION OF DOUBLE LAYER CHARGING.

Abstract : Theory of relaxation electrode processes is developed on the basis of three, previously reported, general equations for a linearized current-overvoltage characteristic and for the following perturbations: single step galvanostatic, double step galvanostatic, coulostatic decay with charge injection either by a square current pulse of a delta-function pulse, and single step potentiostatic. Results are compared with earlier results derived on the assumption of a priori separation of faradaic and charging processes. The error on kinetic parameters that affects some earlier results can be serious. Methods for analysis of experimental results are described for each method and for combinations of methods. Numerical examples are given. (Author)