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, SukWoo Nam, Tae Hoon Lim, Jong Jin Yoon, Sehkyu Park, Jong Hyun Jang

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Abstract

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.

Original languageEnglish
Pages (from-to)3475-3481
Number of pages7
JournalBulletin of the Korean Chemical Society
Volume35
Issue number12
DOIs
Publication statusPublished - 2014 Dec 20

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ASJC Scopus subject areas

  • Chemistry(all)

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