Title

Accelerated Durability Testing Of Perfluorosulfonic Acid Meas For Pemfcs Using Different Relative Humidities

Abstract

Durability studies were carried out on membrane electrode assemblies (MEA)s containing commercial Nafion® membranes. Fuel cells were run under hydrogen/air for 100 hours at 10 to 100% relative humidity, 90 and 100 °C, and open circuit voltage. The voltage was monitored during the durability test, as was the condensate water for presence of fluoride ions. Crossover current (CO), electrochemically active surface areas (ECA), and polarization curves were evaluated pre- and post- test. High and low %RH (10 and 80-100% RH) resulted in the least degradation while medium-low %RH (20-30% RH) resulted in the highest level of degradation. By examining the various parameters that were used to measure the level of degradation more closely, it may be possible to gain a deeper understanding of how the humidity of an operating fuel cell effects degradation. ©The Electrochemical Society.

Publication Date

12-1-2009

Publication Title

ECS Transactions

Volume

25

Issue

1 PART 2

Number of Pages

1861-1871

Document Type

Article; Proceedings Paper

DOI Link

https://doi.org/10.1149/1.3210741

Socpus ID

77649240871 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77649240871

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