Simulation of square-wave voltammetry at a channel electrode: E, EC and ECE processes

A simulation is developed for square-wave voltammetry occurring at a channel electrode. The technique is based on the space marching variation of the backward implicit method and facilitates the study of E, EC and ECE mechanistic schemes. Further, the investigation of the effects of the rate of mass transport on the three key voltammetric properties — peak current, peak position and peak width at half-height — is possible and the results are compared with previously published work where a stagnant Nernstian diffusion layer was used as a general approximation to all hydrodynamic electrodes.