Abstract
The distribution of electroactive species in the vicinity of twin polarized hemispherical microelectrodes has been derived, for any value of ϱ, the ratio of the interelectrode spacing to the electrode diameter. Thereby, it is demonstrated that the steady-state limiting current exceeds that at a single hemispherical microelectrode by the factor 4ϱ/(2ϱ + 1) + exp(−2.9ϱ). The same limiting current is also passed by a spherical electrode suspended above a nearby plane. Merged hemispherical electrodes and sphere-cap electrodes are also discussed.
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