Analysis of the polarization of a direct methanol fuel cell using a pseudo-reversible hydrogen reference electrode

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In order to observe the performance of the anode and cathode during actual direct methanol fuel cell (DMFC) operating conditions and to minimize the polarization of the reference electrode, we used a reversible hydrogen reference electrode (RHE) with its instability minimized. For analysis of the I-V polarization curve of each electrode, Tafel plots were used as the diagnostic tool. According to the slopes in the Tafel plot, the I-V polarization curves of each electrode were divided into the several regions. The effects of operating parameters on the performance of each electrode were interpreted in terms of mass transfer and electrode activation. The methanol and oxygen crossover through the membrane significantly affected the performance of the cell. (c) 2005 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-09
Language
English
Article Type
Article
Keywords

OXYGEN REDUCTION; NAFION MEMBRANES; CROSSOVER; PERFORMANCE; PERMEATION; TRANSPORT; OXIDATION; SYSTEM; DMFCS; WATER

Citation

JOURNAL OF POWER SOURCES, v.159, no.1, pp.491 - 500

ISSN
0378-7753
DOI
10.1016/j.jpowsour.2005.11.001
URI
http://hdl.handle.net/10203/18385
Appears in Collection
CBE-Journal Papers(저널논문)
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