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Pt particles supported on conducting polymeric nanocones as electro-catalysts for methanol oxidation
Balasubramanian Viswanathan
Published in
2004
Volume: 133
   
Issue: 2
Pages: 155 - 161
Abstract
The electrochemical synthesis of conducting nanocones of Pt incorporated poly(3-methyl) thiophene, employing alumina membrane templates and its use as an electrode material for methanol oxidation is reported. The activity (131mA/cm2 at +0.4V versus Ag/AgCl for a Pt loading of 80μg/cm2) of nanocone-based electrode was found to be more than one order of magnitude higher compared to the regular poly(3-methyl) thiophene electrode (12.2mA/cm2 at +0.4V versus Ag/AgCl for a Pt loading of 80μg/cm2). The chronoamperometric response confirms the better activity and stability of the nanocone-based electrode compared to the commercial 20wt.% Pt/C (E-TEK) and template-free electrode. The XPS data confirmed the presence of Pt in the metallic state. The nanocone morphology of poly(3-methyl) thiophene, helps in the effective dispersion of Pt particles facilitating the easier access of methanol to the catalytic sites. © 2004 Elsevier B.V. All rights reserved.
About the journal
JournalJournal of Power Sources
ISSN03787753
Open AccessNo
Concepts (16)
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    Alumina
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    CATALYSTS
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    Coatings
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    Conductive plastics
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    Electrochemistry
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    Electropolymerization
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    Methanol
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    Nanostructured materials
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    Oxidation
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    Platinum
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    Synthesis (chemical)
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    DIRECT METHANOL FUEL CELLS (DMFC)
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    Electrocatalysts
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    Methanol oxidation
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    NANOCONES
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    Fuel cells