THEORY OF ECE PROCESSES AT HEMICYLINDER AND BAND MICROELECTRODES

Numerical simulations are used to predict the chronoamperometric current transients resulting from an ECE process at both hemicylinder and band microelectrodes. Working curves are presented to permit the analysis of experimental data. It is demonstrated that the long-time behaviour at a band of width w and length x(e) is identical with the current at a hemicylinder of width w and radius a = x(e)/4, as has previously been shown to be the case for electrode processes involving simple electron transfer in the absence of coupled homogeneous kinetics.