Study on Hydrogen Crossover at Different Current Densities in Polymer Electrolyte Membrane Fuel Cells

The crossover is an inevitable phenomenon caused by the porosity of the membrane. Through this, not only protons, but also gases such as hydrogen, oxygen and nitrogen can permeate to opposite side and this causes the severe durability problem. Despite of this importance of crossover, there have been...

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Bibliographic Details
Published inECS transactions Vol. 65; no. 1; pp. 45 - 49
Main Authors Jung, Aeri, Han, Kookil, Hong, Bo Ki, Kim, Min Soo
Format Journal Article
LanguageEnglish
Published The Electrochemical Society, Inc 14.01.2015
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Summary:The crossover is an inevitable phenomenon caused by the porosity of the membrane. Through this, not only protons, but also gases such as hydrogen, oxygen and nitrogen can permeate to opposite side and this causes the severe durability problem. Despite of this importance of crossover, there have been some limits in research. Therefore, much research has been conducted for an open circuit condition. For this reason, in this study, the hydrogen crossover rate under various current densities is experimentally measured for different relative humidity conditions. To detect hydrogen crossover rate, mass spectrometer is used in this experiment. With the mass spectrometer, the hydrogen crossover rate is measured and analyzed for different relative humidity conditions at various current densities.
ISSN:1938-5862
1938-6737
DOI:10.1149/06501.0045ecst