The Effect of Electrode Pretreatment on the Oxygen Reduction on Platinum in Perchloric Acid
- 1 January 1965
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 112 (9) , 928-931
- https://doi.org/10.1149/1.2423735
Abstract
The effect of pretreatment of a platinum electrode on the electrochemical reduction of oxygen and of hydrogen peroxide in perchloric acid was studied at room temperature. Hydrogen and oxygen pretreatments affect the oxygen reduction in a manner similar to cathodic and anodic pretreatments, respectively. An interpretation of various electrode characteristics is given on the basis of this parallelism. Removal of strongly bound oxygen by hydrogen pretreatment or cathodization accelerates the decomposition of hydrogen peroxide and increases the open‐circuit potential and the rate of the oxygen reduction in solutions containing 10−5 to 10−7 M peroxide. Decay rates from a high anodic potential provide a sensitive measure for peroxide concentrations in the electrolyte.Keywords
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