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Issue 27, 2014
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Electrocatalysis of hydrogen peroxide reactions on perovskite oxides: experiment versus kinetic modeling

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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.

Graphical abstract: Electrocatalysis of hydrogen peroxide reactions on perovskite oxides: experiment versus kinetic modeling

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Supplementary files

Article information


Submitted
22 Jan 2014
Accepted
27 Feb 2014
First published
28 Feb 2014

This article is Open Access

Phys. Chem. Chem. Phys., 2014,16, 13595-13600
Article type
Communication
Author version available

Electrocatalysis of hydrogen peroxide reactions on perovskite oxides: experiment versus kinetic modeling

T. Poux, A. Bonnefont, A. Ryabova, G. Kéranguéven, G. A. Tsirlina and E. R. Savinova, Phys. Chem. Chem. Phys., 2014, 16, 13595
DOI: 10.1039/C4CP00341A

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