PbO₂TiO₂ Composite Electrodes

A. B. Velichenko¹, V. A. Knysh¹, T. V. Luk’yanenko¹, F. I. Danilov¹, and D. Devilliers²

¹ Ukrainian State University of Chemical Technology, pr. Gagarina 8, Dnepropetrovsk, 49005 Ukraine

² Pierre and Marie Curie University (Paris 6), pl. Jussieu 4, Paris, 75252 France

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Received May 20, 2008

Abstract — Electrodeposition of composite PbO₂-based materials containing titanium dioxide particles was studied. The TiO₂ content of the composite depends on the bath composition and the deposition conditions. Inclusion of TiO₂ particles in PbO₂ substantially changes the morphology and structure of the deposit. The oxygen overpotential at composite materials increased but the rate of the conversion of 4-chlorophenol into nontoxic compounds remained virtually unchanged. The lifetime of the electrodes containing the inert TiO₂ phase was found to be twice as long as that of traditional PbO₂ anodes.