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Technical Briefs

Durability Test Results of a Polymer Electrolyte Membrane Fuel Cell Operated at Overnominal Temperature With Low Humidified Reactants

[+] Author and Article Information
Sébastien Wasterlain

 FC LAB, FEMTO-ST/ENISYS, UMR CNRS 6174, University of Franche-Comté (UFC); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francesebastien.wasterlain@utbm.fr

Denis Candusso1

 FC LAB, The French National Institute for Transport and Safety Research (INRETS); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francedenis.candusso@inrets.fr

Fabien Harel

 FC LAB, The French National Institute for Transport and Safety Research (INRETS); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francefabien.harel@inrets.fr

Xavier François

 FC LAB, University of Technology Belfort-Montbéliard (UTBM); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francexavier.francois@utbm.fr

Marie-Cécile Péra

 FC LAB, FEMTO-ST/ENISYS, UMR CNRS 6174, University of Franche-Comté (UFC); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francemarie-cecile.pera@univ-fcomte.fr

Daniel Hissel

 FC LAB, FEMTO-ST/ENISYS, UMR CNRS 6174, University of Franche-Comté (UFC); Techn’Hom, rue Thierry Mieg, F 90010 Belfort Cedex, Francedaniel.hissel@univ-fcomte.fr

1

Corresponding author.

J. Fuel Cell Sci. Technol 7(2), 024502 (Jan 20, 2010) (4 pages) doi:10.1115/1.3182736 History: Received May 23, 2008; Revised June 11, 2009; Published January 20, 2010; Online January 20, 2010

A three-cell polymer electrolyte membrane fuel cell stack equipped with perfluorinated ionomer membranes is tested for 1000 h in severe operating conditions. The fuel cell (FC) is fed by dry hydrogen/low humidified air and it is simultaneously operated at overnominal temperature. During the long term experiment, some polarization curves and electrochemical impedance spectra are recorded at regular time-spaced intervals for various stoichiometry rates. The objective is to characterize the degradation of FC performances with the aim to better understand the FC aging mechanisms. Some response surfaces are plotted to display and analyze the stack voltage variations as a function of aging time, static load current, and gas utilization rates. Different points of the FC impedance spectra are also considered. The evolutions of their coordinates in the Nyquist plot can be monitored versus aging time and for different gas utilization rates.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

FC stack voltage versus time for the low humidity experiment (65°C stack temperature)

Grahic Jump Location
Figure 2

Display of the polarization curve set using a three-dimensional shaded surface (FSA/FSC=2/5 and 55°C stack temperature)

Grahic Jump Location
Figure 3

Set of impedance spectra recorded for FSA/FSC=2/5 and a stack temperature of 55°C

Grahic Jump Location
Figure 4

Internal and polarization resistances versus aging time for FSA/FSC=2/5 and a stack temperature of 55°C

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