Title: Investigation of cell operation conditions for co tolerance improvement of PEMFC
Authors: Chung, Chen-Chung
Chen, Chiun-Hsun
Weng, Der-Cheng
Yan, Yi-Yie
Lin, Hsiang-Hui
Department of Mechanical Engineering
Keywords: CO tolerance;PEMFC
Issue Date: 1-Dec-2007
Abstract: The investigation is to experimentally study the transient CO poisoning test with different cell operation conditions. One is fixing the cell voltage and the other is fixing the current density. In the former condition, the voltages are fixed at 0.5, 0.6, 0.7V, respectively, whereas the current densities are fixed at 600, 1000, 1200mA/cm(2), respectively, in the latter one. In the transient poisoning test, the cell performance will be declined with time. The poisoned polarization curves are determined as soon as the performance subjected to CO poisoning reaches a steady state. Then, it will determine which one has a better performance in CO poisoning test and find out the difference between these two methods. With fixed cell voltage to perform transient CO poisoning test, it indicates that changing cell voltage cannot transform the stable poisoned polarization behaviors, whereas with fixed current density, it can get a better recovery performance at a fixed CO concentration (52.7ppm).
URI: http://hdl.handle.net/11536/10091
ISSN: 0257-9731
Volume: 28
Issue: 6
Begin Page: 563
End Page: 569
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