title: Electrocatalysis of hydrogen peroxide reactions on perovskite oxides: experiment versus kinetic modeling.
abstract: Hydrogen peroxide has been identified as a stable intermediate of the electrochemical oxygen reduction reaction on various electrodes including metal, metal oxide and carbon materials. In this article we study the hydrogen peroxide oxidation and reduction reactions in alkaline medium using a rotating disc electrode (RDE) method on oxides of the perovskite family (LaCoO3, LaMnO3 and La0.8Sr0.2MnO3) which are considered as promising electrocatalytic materials for the cathode of liquid and solid alkaline fuel cells. The experimental findings, such as the higher activity of Mn-compared to that of Co-perovskites, the shape of RDE curves, and the influence of the H2O2 concentration, are rationalized with the help of a microkinetic model.
authors.affiliation: Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-University of Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex, France. Elena.Savinova@unistra.fr.
authors.forename: T
authors.initials: T
authors.lastname: Poux
authors.forename: A
authors.initials: A
authors.lastname: Bonnefont
authors.forename: A
authors.initials: A
authors.lastname: Ryabova
authors.forename: G
authors.initials: G
authors.lastname: Kéranguéven
authors.forename: G A
authors.initials: GA
authors.lastname: Tsirlina
authors.forename: E R
authors.initials: ER
authors.lastname: Savinova