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Functionalized 2D Graphene Sheets as Catalyst Support for Proton Exchange Membrane Fuel Cell Electrodes

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Abstract:

Functionalized graphene sheets have been investigated as catalyst supports for platinum electrocatalysts for use in PEMFC electrodes. Well-dispersed Pt nanoparticles with small particle size were impregnated on graphene sheets. The electrochemical tests showed that the Pt nanoparticles supported on graphene shows good electrochemical activity and much higher Electrochemical Surface Area (ECSA) of 24 m2/g. The maximum current density was found to be 700 mA/cm2 for electrodes having Pt/G catalysts on both electrodes, compared to electrodes where Pt/C is being used at the anode. This study reveals that Pt/G can be a good electro catalyst not only for oxygen reduction but also for hydrogen oxidation. The dispersion of the electrocatalyst on graphene has been found to be useful for achieving relatively better performance in fuel cells. Electrochemical experiments show that the Pt supported on graphene oxide have superior catalytic performance indicating that the graphene may have a splendid future as catalyst carrier in electrocatalyst and fuel cell.

Keywords: ELECTROCATALYST; FUEL CELL; GRAPHENE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asl.2012.2026

Publication date: March 1, 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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