Metal Anodes and Hydrogen Cathodes: Their Activity Towards  O 2 Evolution and ClO3  −  Reduction Reactions

A theoretical basis is presented for the dependence of current efficiency on current density when two activation‐controlled reactions are simultaneously occurring. Factors influencing the kinetics of discharge during evolution on Ru‐based anodes, and chlorate reduction during the course of evolution on steel‐based cathodes, and methods to suppress these parasitic reactions, are discussed.