Abstract
Current distribution at the rotating disk electrode has been experimentally evaluated by several techniques including single and double reference probe potential mapping, ring‐disk electrode collection efficiency and resistive interaction, interrupter and steady‐state resistance measurements, and automatic ohmic compensation methods. Mapping experiments are in quantitative agreement with the predictions of Newman's theory for this system and were further confirmed by resistance determinations and theoretically based correction methods. The implications of the data for various ring‐disk and non‐steady‐state experiments and also the utility of an approximate approach to estimating the degree of nonuniform current distribution are examined.
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