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Feasibility of using PtFe alloys as cathodes in direct methanol fuel cells

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

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Abstract

Carbon-supported platinum-iron catalysts were fabricated and characterised by means of scanning electron microscopy, energy-dispersive X-ray system and X-ray diffraction. The catalysts were tested in electrochemical half cells for oxygen reduction using voltammetry and steady-state polarisation measurements and in direct methanol fuel cells. Use of PtFe/C cathodes, instead of a Pt/C cathode, partially suppressed methanol oxidation and led to higher net oxygen reduction currents in the presence of methanol. Consequently, an increase in power density up to 30% was achieved in direct methanol fuel cells with PtFe/C cathodes, compared to that with Pt/C cathode. The influence of alloy composition and operation conditions on the cell performance has been investigated.

Publication metadata

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

Publication type: Article

Publication status: Published

Journal: Journal of Applied Electrochemistry

Year: 2007

Volume: 37

Issue: 1

Pages: 21-26

ISSN (print): 0021-891X

ISSN (electronic): 1572-8838

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10800-006-9224-x

DOI: 10.1007/s10800-006-9224-x

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