Study on the Analysis of the Current-potential Curve of RDE in Electrocatalytic Reactions

Abstract

The rotating disk electrode (RDE) technique is one of the most powerful methods for studying electrode reaction kinetics. Koutecký–Levich equation is frequently applied to the analysis of RDE curves of electrocatalytic reactions. Here, we take careful note of the negative aspect of the situation that the electrocatalytic kinetic-controlled current term in the equations is often expressed by Butler–Volmer-type equation. More rigid analytical expressions are proposed and some examples of the analysis of current-potential curves are also detailed by taking the oxygen reduction reaction.