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Fabrication and evaluation of Pt-Fe alloys as methanol tolerant cathode materials for direct methanol fuel cells

Lookup NU author(s): Wanqing Yuan, Emeritus Professor Keith Scott, Dr Hua Cheng

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Abstract

Carbon-supported platinum-iron catalysts were prepared and characterised by means of scanning electron microscopy, energy-dispersive X-ray and X-ray diffraction techniques. The catalysts were tested for oxygen reduction in half-cells and in direct methanol fuel cells using voltammetric and steady-state polarisation measurements. Methanol oxidation was partially suppressed and higher net oxygen reduction currents were achieved at the PtFe/C cathodes, compared to the Pt alone. An increase in power density of up to 20-30% was achieved by using the PtFe/C rather than the Pt/C cathodes. © 2006 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): Yuan W, Scott K, Cheng H

Publication type: Article

Publication status: Published

Journal: Journal of Power Sources

Year: 2006

Volume: 163

Issue: 1

Pages: 323-329

ISSN (print): 0378-7753

ISSN (electronic): 1873-2755

Publisher: Elsevier SA

URL: http://dx.doi.org/10.1016/j.jpowsour.2006.09.005

DOI: 10.1016/j.jpowsour.2006.09.005

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