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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 12
BKCSDE 35(12)
December 20, 2014 

Systematic Analysis for the Effects of Atmospheric Pollutants in Cathode Feed on the Performance of Proton Exchange Membrane Fuel Cells
Young-Gon Yoon, Insoo Choi, Chang-Ha Lee, Jonghee Han, Hyoung-Juhn Kim, EunAe Cho, Sung Jong Yoo, Suk Woo Nam, Tae-Hoon Lim, Jong Jin Yoon, Sehkyu Park*, Jong Hyun Jang*
Air impurity, Performance loss, Voltage recovery, Cathode, Proton exchange membrane fuel cell
This paper describes how primary contaminants in ambient air affect the performance of the cathode in fuel cell electric vehicle applications. The effect of four atmospheric pollutants (SO2, NH3, NO2, and CO) on cathode performance was investigated by air impurity injection and recovery test under load. Electrochemical analysis via polarization and electrochemical impedance spectroscopy was performed for various concentrations of contaminants during the impurity test in order to determine the origins of performance decay. The variation in cell voltage derived empirically in this study and data reported in the literature were normalized and juxtaposed to elucidate the relationship between impurity concentration and performance. Mechanisms of cathode degradation by air impurities were discussed in light of the findings.
3475 - 3481
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