Journal
JOURNAL OF APPLIED ELECTROCHEMISTRY
Volume 30, Issue 10, Pages 1137-1142Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1004050922065
Keywords
carbon monoxide; fuel cell; methanol; polyaniline; platinum
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Pt clusters were electrodispersed on polymeric films to obtain catalytic electrodes for methanol oxidation. The electrodeposit was built up by applying either a constant potential or a repetitive square wave potential routine. The performance of the electrodes was followed by measuring the stripping peak potential of adsorbed CO, each assembly metal/Pani/Pt being characterized by SEM and EDAX. Polymeric electrodes, modified with Pt electrodeposited by the programmed potential variation had a better electrocatalytic activity for CO and methanol oxidation. The novel tailored electrode is the result of a balance between a particular morphology and the number of particles of the catalytic material on the conductive polyaniline matrix.
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