Pt Utilization Analysis Using CO Adsorption

Methods for estimating the Pt utilization of an MEA, the ratio of the electrochemically active Pt surface area of the MEA to the Pt surface area of the catalyst, were examined. The most reliable and accurate estimation was obtained by the method which uses CO as the probe for both the surface area....

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Bibliographic Details
Published inECS transactions Vol. 11; no. 1; pp. 497 - 507
Main Authors Shinozaki, Kazuma, Hatanaka, Tatsuya, Morimoto, Yu
Format Journal Article
LanguageEnglish
Published 28.09.2007
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Summary:Methods for estimating the Pt utilization of an MEA, the ratio of the electrochemically active Pt surface area of the MEA to the Pt surface area of the catalyst, were examined. The most reliable and accurate estimation was obtained by the method which uses CO as the probe for both the surface area. With this method, the Pt utilization of our conventional MEA was found ca. 90%, which is much higher than the values other widely-used methods predicted.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.2780963