On the Normal Oxygen Potential at a Platinum‐Oxygen Alloy Diaphragm Electrode

Abstract

Platinum foil electrodes were clamped between the compartments of a dual Teflon cell. The rest potential on the front side of the Pt diaphragm in contact with solution was observed while the back side was in contact with aerated, concentrated . A value of 1.227V was observed on a Pt foil 0.00127 cm thick after 54 hr in contact with and 1.221V on a foil 0.00762 cm thick after 358 hr. This is the first time that the reversible potential has been reported on a prereduced Pt surface. The thickness effect is in agreement with the proposed model.