Journal
JOURNAL OF POWER SOURCES
Volume 210, Issue -, Pages 366-373Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.02.098
Keywords
High-temperature proton exchange membrane fuel cells; Performance; Durability; Polybenzimidazole; Phosphoric acid; Mechanism
Ask authors/readers for more resources
The mechanism underlying the decline in cell voltage over time was investigated for high-temperature proton exchange membrane fuel cells. Five identical cells were prepared and long-term powergeneration tests were conducted at an operation temperature of 150 degrees C and a current density of 0.2 A cm(-2) for periods of up to 17,860 h. Each of the cells was then analyzed using transmission electron microscopy and electron probe micro-analysis (EPMA). The results indicated that growth of the Pt catalyst particles occurred during operation, in addition to oxidation of the carbon support. Degradation of the catalyst layers was investigated by EPMA of cross sections of the membrane electrode assemblies, allowing the mechanism of cell performance reduction to be clarified. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available