The influence of Schmidt number on the behavior of rotating ring-disk electrodes

Abstract

A perturbation technique is used to extend the theory of the rotating ring-disk system to include a first-order correction for convective diffusion at large Schmidt numbers. Results are presented for typical annulus and ring sizes. Collection efficiencies are always larger than those predicted in the infinite Schmidt number asymptote but, for most electrochemical systems, the correction is less than 3%.