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Ultra CO Tolerant PtMo/PtRu anodes for PEMFCs

Published online by Cambridge University Press:  11 February 2011

Sarah C Ball  and
David Thompsett
Sarah C Ball
Affiliation:
Johnson Matthey Technology Centre, Blounts Court, Sonning Common Reading, RG4 9NH UK
David Thompsett
Affiliation:
Johnson Matthey Technology Centre, Blounts Court, Sonning Common Reading, RG4 9NH UK
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Abstract

Progress has been made in designing an anode electrode that can tolerate CO levels of several thousand ppm which are a typical output of a fuel processor consisting of a reformer and water-gas-shift unit only. The combination of a PtMo catalyst that is capable of electrochemically oxidising CO and a PtRu catalyst that can tolerate high levels of CO2 arranged in a bilayer configuration, has been shown to tolerate 2000 ppm CO in H2 with a relatively small loss in fuel cell performance. Further improvements in the ability to tolerate higher levels of CO with lower performance losses are expected due to improved PtMo catalyst design.

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References

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