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

作者：Wasterlain Sebastien; Candusso Denis^*; Harel Fabien; Francois Xavier; Pera Marie Cecile; Hissel Daniel

来源：Journal of Fuel Cell Science and Technology, 2010, 7(2): 024502.

DOI：10.1115/1.3182736

• PEMFC
• durability
• reliability
• experimental
• low humidity conditions
• electrochemical impedance spectroscopy

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. [DOI: 10.1115/1.3182736]

• 出版日期2010-4