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Current Oscillations during CO Electro-oxidation on Smooth Platinum

2002; Electrochemical Society; Volume: 5; Issue: 3 Linguagem: Inglês

10.1149/1.1450062

ISSN

1944-8775

Autores

Dayse C. de Azevedo, Alexei Lorenzetti Novaes Pinheiro, Ernesto Rafael González,

Tópico(s)

Electrocatalysts for Energy Conversion

Resumo

In this paper it is shown, for the first time, the presence of current oscillations in the electro-oxidation of carbon monoxide on a rotating platinum electrode. The current oscillations occur in a very restricted potential region around 950 mV vs. reversible hydrogen electrode, and may be observed for over 12 h. They are discussed in terms of the mechanism for CO electro-oxidation and the mutual influence of the processes of CO adsorption and formation of oxygenated species on the surface. © 2002 The Electrochemical Society. All rights reserved.

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