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http://dx.doi.org/10.5229/JKES.2010.13.4.277

Effects of Storage Condition on Degradation of Automotive Polymer Electrolyte Membrane Fuel Cells  

Cho, Eun-Ae (Fuel Cell Center, Korea Institute of Science and Technology)
Publication Information
Journal of the Korean Electrochemical Society / v.13, no.4, 2010 , pp. 277-282 More about this Journal
Abstract
Durability of automotive polymer electrolyte membrane fuel cell (PEMFC) strongly depends the startup/shutdown procedure. Formation of hydrogen/air boundary in the anode gas channel, so-called reverse current condition, particularly induces fast degradation of the cathode. Under the reverse current condition, high voltage is present at the cathode facing air in the anode gas channel and is a function of residual oxygen concentration in the gas channels, that increases with storage time and reaches 21% (air) eventually. In this study, effects of residual oxygen concentration in a PEMFC on degradation of the PEMFC.
Keywords
PEMFC; Startup/shutdown; Durability; Degradation; Oxygen concentration;
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