ELECTROCHEMICAL RESPONSE OF A DISK ELECTRODE TO ANGULAR VELOCITY STEPS.

In this paper, the authors consider one of the many possible situations, namely, the time-dependent current response obtained under potentiostatic conditions on application of an angular velocity step. To avoid electrochemical kinetic complications, the potential chosen in all the examples was sufficient to produce complete concentration polarization of the diffusing species. It will be shown that little change in current occurs during the time required for the new hydrodynamic ″steady-state″ to be attained, and the current-time transient results primarily from the relaxation of the (convective-) diffusion layer thickness.