OZONE EVOLUTION AT THE LEAD DIOXIDE ELECTRODE IN HIGHLY ACID AND NEUTRAL ELECTROLYTES - THE INFLUENCE OF POLARIZATION AND FLUORIDE IONS ON THE PROCESS KINETICS

Authors
CHERNIK AA DROZDOVICH VB ZHARSKII IM
Citation
Aa. Chernik et al., OZONE EVOLUTION AT THE LEAD DIOXIDE ELECTRODE IN HIGHLY ACID AND NEUTRAL ELECTROLYTES - THE INFLUENCE OF POLARIZATION AND FLUORIDE IONS ON THE PROCESS KINETICS, Russian journal of electrochemistry, 33(3), 1997, pp. 259-263
Citations number
15
Categorie Soggetti
Electrochemistry
Journal title
Russian journal of electrochemistry → ACNP
ISSN journal
10231935
Volume
33
Issue
3
Year of publication
1997
Pages
259 - 263
Database
ISI
SICI code
1023-1935(1997)33:3<259:OEATLD>2.0.ZU;2-1
Abstract
The influence of preliminary polarization and fluoride ions on the ano dic behavior of the beta-PbO2 electrode is studied by cyclic voltammet ry in H2SO4, HClO4, and HBF4 solutions and in the (K2HPO4 + KH2PO4) ph osphate buffer of pH 7. The study is conducted at high anodic potentia ls under the conditions of ozone generation. Saturation of the lead di oxide surface layer with oxygen is assumed to be the principal reason for the anodic overvoltage decrease during polarization. The fluoride anion is shown to act as an inhibitor.