Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 6, Issue 2, Pages 164-169Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2003.11.007
Keywords
decorated catalysts; ultra-low Pt loading; Pt-Ru catalysts; direct methanol fuel cells
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DThe electrochemical behaviour of Pt-decorated unsupported Ru catalysts-based anodes has been investigated in direct methanol fuel cells (DMFCs). A preparation procedure allowing the surface decoration of unsupported Ru catalysts by Pt nanoparticles has been developed. DMFC power densities of 150 mWcm(-2) at 130 degreesC have been achieved with ultra-low Pt loading anodes (0.1 mg cm(-2)) under air feed operation. Adsorbed methanolic residues stripping voltammetry analysis has been carried out to get information on the electrocatalytic activity of the Pt-decorated anodes in relation to the state-of-art carbon supported Pt-Ru (1: 1) alloy and bare unsupported Ru catalysts. (C) 2003 Elsevier B.V. All rights reserved.
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