Author:
Garzon Fernando,Uribe Francisco A.,Rockward Tommy,Urdampilleta Idoia G.,Brosha Eric L.
Abstract
We have studied the effects of H2S and fuel impurity mixtures on hydrogen polymer fuel cell performance. The tests included a range of H2S concentrations, exposure times, and multiple impurity mixtures at various operating conditions such as cell voltage and times of exposure. Analytical methods included fuel cell polarization experiments, cyclic voltammetry, and effluent water and gas analysis using specific ion sensor probes. H2S concentrations as low as 10 ppb, produced negative effects on fuel cell performance. The extent of sulfur poisoning of the anodes was also shown to be a strong function of fuel cell operating voltage during H2S exposure.
Publisher
The Electrochemical Society
Cited by
30 articles.
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