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http://dx.doi.org/10.12925/jkocs.2012.29.4.594

The performance of PEMFC during exposure to simultaneous sulfur impurity poisoning on cathode and anode  

Lee, Soo (Department of Chemical Engineering, Changwon National University)
Jin, Seok-Hwan (Department of Chemical Engineering, Changwon National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.29, no.4, 2012 , pp. 594-598 More about this Journal
Abstract
Polymer electrolyte membrane fuel cell(PEMFC) performance degrades seriously when sulfur dioxide and hydrogen sulfide are contaminated in the fuel gas at anode and air source at cathode, respectively. This paper reveals the effect of the combined sulfur impurity poisoning on both PEMFC cathode and anode parts through measuring electrical performance on single FC operated under 1 ppm to 10 ppm impurity gases. The severity of $SO_2$ and $H_2S$ poisoning depended on concentrations of impurity gases under optimum operating conditions($65^{\circ}C$ of cell temperature and 100 % relative humidity). Sulfur adsorption occured on the surface of Pt catalyst layer on MEA. In addition, MEA poisoning by impurity gases were cumulative. After four consecutive poisonings with 1, 3, 5 to 10 ppm, the fuel cell performance of PEMFC was decrease upto 0.54 V(76 %) from 0.71 V.
Keywords
polymer electrolyte membrane fuel cell; sulfur dioxide; hydrogen sulfide; simultaneous poisoning; I-V curve;
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Times Cited By KSCI : 3  (Citation Analysis)
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