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Comparison between Derived Sol-Gel and conventional methods for the preparation of Dimensionally Stable Ta/IrO2 Anodes for oxygen evolution

Massot, Laurent and Palau, Patrice and Savall, André and Taxil, Pierre Comparison between Derived Sol-Gel and conventional methods for the preparation of Dimensionally Stable Ta/IrO2 Anodes for oxygen evolution. (2007) Journal of New Materials for Electrochemical Systems, vol. 10 (n° 2). pp. 123-128. ISSN 1480-2422

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Abstract

The elaboration of inert anodes suitable for oxygen evolution in acidic media was investigated. These electrodes are formed of a tantalum substrate covered by a catalyst layer of iridium oxide IrO2. In this work, the catalyst coating was obtained by thermal decomposition of coating solutions prepared by two methods: (1) the derived Sol-Gel method using iridium acetylacetonate ([CH3COCH=C(O)CH3]3Ir) dissolved in an isopropanol – acetic acid mixture and (2) the classic method which uses a solution of iridium tetrachloride dissolved in a ethanol – isopropanol mixture. These electrodes were characterised by electrochemical and physical techniques. The use of the derived Sol-Gel method for the preparation of Ta/IrO2 electrodes yields very active electrocatalytic layer, such an electrocatalytic coating may be expected to be used for short time electrolysis runs with high rates of production.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Hélène Dubernard
Deposited On:21 Nov 2008 10:49

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