The oxygen reduction activities of platinum and platinum alloy catalysts were evaluated at temperatures up to 150 °C in phosphoric acid solution. The oxygen reduction currents and open circuit potentials were measured using chronoamperometry with double potential steps to eliminate the effects of double layer charging currents and metal deactivationcould be eliminated effectively. Based on the mass activity at 0.7 V versus Ag/AgCl, the commercial PtNi catalyst showed higher performances than commercial Pt catalyst at 150 °C. The commercial PtCo catalyst showed high activities at 90 °C and 120 °C. Intermediate temperature fuel cells based on phosphoric acid doped polybenzimidazole membranes were tested with the alloy cathode catalysts. In the case of Pt–Fe alloy an enhanced performance was achieved in comparison to that with Pt carbon catalysts.
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February 2012
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems
Mohamed Mamlouk,
Mohamed Mamlouk
School of Chemical Engineering and Advanced Materials,
University of Newcastle
, Newcastle upon Tyne, NE1 7RU, UK
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Jong Hyun Jang,
Jong Hyun Jang
Fuel Cell Research Center,
Korea Institute of Science and Technology (KIST)
, Seoul 136-791, Republic of Korea
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Keith Scott
Keith Scott
School of Chemical Engineering and Advanced Materials,
University of Newcastle
, Newcastle upon Tyne,NE1 7RU, UK
Search for other works by this author on:
Mohamed Mamlouk
School of Chemical Engineering and Advanced Materials,
University of Newcastle
, Newcastle upon Tyne, NE1 7RU, UK
e-mail:
Jong Hyun Jang
Fuel Cell Research Center,
Korea Institute of Science and Technology (KIST)
, Seoul 136-791, Republic of Korea
Keith Scott
School of Chemical Engineering and Advanced Materials,
University of Newcastle
, Newcastle upon Tyne,NE1 7RU, UK
J. Fuel Cell Sci. Technol. Feb 2012, 9(1): 011002 (9 pages)
Published Online: December 15, 2011
Article history
Received:
August 13, 2009
Revised:
April 12, 2011
Online:
December 15, 2011
Published:
December 15, 2011
Citation
Mamlouk, M., Jang, J. H., and Scott, K. (December 15, 2011). "Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems." ASME. J. Fuel Cell Sci. Technol. February 2012; 9(1): 011002. https://doi.org/10.1115/1.4004461
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