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Effect of Trace Contaminants on PEM Fuel Cell Performance

Published online by Cambridge University Press:  01 February 2011

Tony Thampan ,
Rick Rocheleau ,
Keith Bethune  and
Douglas Wheeler
Tony Thampan
Affiliation:
[email protected], University of Hawaii, 1680 East-West Rd POST 109, Honolulu, HI, 96822, United States
Rick Rocheleau
Affiliation:
[email protected], United States
Keith Bethune
Affiliation:
[email protected], United States
Douglas Wheeler
Affiliation:
[email protected], United States
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Abstract

At the Hawaii Fuel Cell Test Facility a systematic evaluation of the impact of impurities in hydrogen is underway to evaluate the effects on the performance of PEM fuel cells. Initial tests are being conducted using carbon monoxide and hydrocarbon contaminants. The effects of carbon monoxide poisons at atmospheric and pressurized operating conditions have shown a strong dependence on concentration of the impurity over the range 6.7 µmole/mole to 29.3 µmole/mole. Additionally, benzene and toluene were tested at 20 µmole/mole. Although both benzene and toluene showed no evidence of fuel cell degradation, on-line gas analysis of the exit anode stream showed that toluene hydrogenation occurs in the anode resulting in 90% conversion of the toluene to methyl-cyclohexane.

Keywords

Ptcatalyticenergy-storage
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 885: Symposium A – The Hydrogen Cycle – Generation, Storage and Fuel Cells , 2005 , 0885-A01-05
Copyright
Copyright © Materials Research Society 2006

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References

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