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The effect of RuO2/TiO2 ratio on the rate of an outer-sphere electron transfer reaction on mixed oxide electrodes

✍ Scribed by L. Tomcsányi; F. Molnár; J. Liszi; A. de Battisti

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 361 KB
Volume: 39
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(94)85186-7

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✦ Synopsis

The apparent heterogeneous rate constants can be determined by a special cu technique in solutions containing both the oxidized and the reduced forms of a redox couple. The electrode materials are characterized by the dikence between the ktX and kFed. The effect of RuO,/IiO, ratio on the electrochemical effective surface area and the apparent rate constants of a redox system are investigated. The optimal composition of the RuO,/IiO, electrode seems to be in the 0.6-0.9Ru0,mole fraction range.

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