Systematic Analysis for the Effects of Atmospheric Pollutants in Cathode Feed on the Performance of Proton Exchange Membrane Fuel Cells

Bulletin of the Korean chemical society

Jong Hyun Jang¹  Suk Woo Nam¹  Insoo Choi¹  Hyoung-Juhn Kim¹  Jong Jin Yoon¹  Sehkyu Park¹  Tae-Hoon Lim¹  Sung Jong Yoo¹  Young-Gon Yoon¹  Chang-Ha Lee¹  Jonghee Han¹  EunAe Cho¹ 

关键词: Air impurity;    Performance loss;    Voltage recovery;    Cathode;    Proton exchange membrane fuel cell;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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.

【 授权许可】

Unknown