Title
Influence Of Trace Oxygen In Low-Crossover Proton Exchange Membrane Fuel Cells
Keywords
Hydrogen crossover; Linear sweep voltammetry; Oxygen reduction; PEM fuel cells
Abstract
The determination of hydrogen permeation through a polymer electrolyte membrane is often achieved through electrochemical methods, under the assumption of no oxygen at the working electrode. However, multiple experiments utilizing low hydrogen crossover conditions have shown reduction currents resulting from trace amounts (2-3 ppm) of oxygen. For conventional membranes, hydrogen crossover is sufficient to overwhelm the trace oxygen, such that the hydrogen permeation results are unaffected. For those conditions with low hydrogen crossover, the presence of trace oxygen can become dominant. This is particularly relevant for advanced polymer electrolyte membranes with very low gas permeability. The use of electrochemical techniques to ascertain the hydrogen permeation coefficient for membranes with low gas permeability was found to be significantly influenced by the presence of trace oxygen. © 2012 Elsevier B.V.
Publication Date
11-15-2012
Publication Title
Journal of Power Sources
Volume
218
Number of Pages
181-186
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.jpowsour.2012.06.089
Copyright Status
Unknown
Socpus ID
84864815590 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84864815590
STARS Citation
Brooker, R. Paul; Rodgers, Marianne P.; Bonville, Leonard J.; Kunz, H. Russell; and Slattery, Darlene K., "Influence Of Trace Oxygen In Low-Crossover Proton Exchange Membrane Fuel Cells" (2012). Scopus Export 2010-2014. 4765.
https://stars.library.ucf.edu/scopus2010/4765