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Acid Treatment of Carbon Supports for Proton Exchange Membrane Fuel Cell Electrocatalyst

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Pt/carbon and Pt/activated carbon catalysts were prepared using a simple chemical reduction method with a view to application in proton exchange membrane (PEM) fuel cells. The catalysts were characterized by X-ray diffraction, energy dispersive X-ray (EDX) spectroscopy, transmission electron microscopy, and Brunauer-Emmett-Teller (BET) surface area measurements. The electrochemical performance of the Pt/carbon and Pt/activated carbon catalysts were evaluated by cyclic voltammetry, and linear scan voltammetry testing. Electrochemical measurements indicate that the Pt nanocatalysts exhibited enhanced electrochemically active surface areas and improved activity in the oxygen reduction reaction (ORR) on the activated carbon compared to the pristine carbon. It is suggested that acid activated carbon would provide better catalyst support than pristine carbon in proton exchange membrane fuel cells.
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Document Type: Research Article

Publication date: February 1, 2011

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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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