Potentiodynamic behaviour of β-lead dioxide in neutral media at positive potentials

Munichandraiah, N (1991) Potentiodynamic behaviour of β-lead dioxide in neutral media at positive potentials. In: Journal of Electroanalytical Chemistry, 309 (1-2). pp. 199-211.

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Abstract

The behaviour of the PbO2 electrode in NaNO3, Na2SO4 NaClO4 and NaCl in the pH range 3.0–10.5 has been studied by cyclic voltammetry. When the electrode is cycled between 0.30 and 1.90 V, a large cathodic current peak appears in the negative scan; in the subsequent cycle, two anodic peaks appear. The addition of H2O2 at low concentrations to the electrolyte also results in two anodic peaks at the same potentials. A number of possible explanations for the appearance of the cathodic peak, and a mechanism for the oxidation of PbO to PbO2 through Pb3O4 corresponding to the two anodic peaks, are proposed.

Item Type:	Journal Article
Publication:	Journal of Electroanalytical Chemistry
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	30 Nov 2010 08:00
Last Modified:	30 Nov 2010 08:00
URI:	http://eprints.iisc.ac.in/id/eprint/34048

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