Investigation of the anodic processes on platinum in perchlorate and chlorate solutions by linear sweep voltammetry using the rotating double-ring electrodes

There have been several attempts to elucidate events occurring on platinum immersed into pure perchloric acid solutions, when submitted to high anodic polarisation. The polarisation curve was shown to exhibit two levels, the second one occurring passed a limiting current which appears to be due to adsorption phenomena. Speculations have been made concerning the possible reaction mechanism which postulated the existence of several species acting as intermediates or reaction products. It was the purpose of this work to use some new techniques for the investigation of those species as well as to extend the observations to the alkaline perchlorate solutions and to those containing chlorate ions