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Electrochemical investigations on the stationary and non-stationary behaviour of the PbO2 electrode

✍ Scribed by Jürgen P. Pohl; Werner Scholz

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
943 KB
Volume
16
Category
Article
ISSN
0378-7753

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✦ Synopsis

The kinetic behaviour of the PbOz electrode is determmed by three reactions (1) deposition/dissolution of lead dioxide, (11) changes in the stoichiometry of the oxide, especially by mcorporation/dissolution of hydrogen, (111) anodic evolution of oxygen Immediately followmg commencement of current flow the stoichiometry-changing reaction predommates, because, we postulate, the proton transfer across the Pb02/electrolyte phase boundary is almost unmhibited Investigations of the kinetics of this reaction have therefore been carried out by means of current pulse measurements. Under appropriate conditions the current m the stationary state is used for Pb02 deposition/dissolution only Current-overvoltage curves for these reactions have been obtained from measurements with thin PbOz layers, where the stationary state was reached quickly Zusammenfassung

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