Electrochemical Behavior of Platinized Ebonex (R) Electrodes

Electrochemical properties of platinized Ebonex (R) electrodes have been studied. It was shown that the temperature of preparation affects the catalytic activity through the surface area and the chemical composition. Ebonex (R)/Pt-electrodes were found to be n-type semiconductors. Increase in treatment temperature leads to thermal diffusion of Pt deep into Ebonex (R) and results in shift of flatband potential to positive values and decrease in donor concentrations. The pPeak of reduction of Pt phase oxides on the cathodic branch of voltammograms characterizes the amount of electrochemically active platinum on Ebonex (R)-surface and could be correlated with electrocatalytic activity of thermally treated Ebonex (R)/Pt-electrodes.