ANODIC OXYGEN EVOLUTION REACTION AT HIGH-TEMPERATURES IN ACID-SOLUTIONS AT PLATINUM

Citation
Lb. Kriksunov et al., ANODIC OXYGEN EVOLUTION REACTION AT HIGH-TEMPERATURES IN ACID-SOLUTIONS AT PLATINUM, Electrochimica acta, 39(1), 1994, pp. 137-142
Citations number
51
Categorie Soggetti
Electrochemistry
Journal title
ISSN journal
00134686
Volume
39
Issue
1
Year of publication
1994
Pages
137 - 142
Database
ISI
SICI code
0013-4686(1994)39:1<137:AOERAH>2.0.ZU;2-H
Abstract
The polarization curves of oxygen evolution and reduction at platinum electrode were obtained in diluted aqueous solutions of sulfuric and p erchloric acids in the temperature range 20-325 degrees C. The Tafel s lopes of polarization curves of oxygen evolution are practically indep endent of the temperature in the whole investigated temperature range. The strong dependence of the transfer coefficient upon the temperatur e is discussed in terms of the influence of adsorption of intermediate s on the reaction kinetics. At highest temperatures, a rest potential was observed which may correspond to the reversible oxygen potential.