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Identification of liquid water constraints in micro polymer electrolyte fuel cells without gas diffusion layers

Authors :
Seyfang, Bernhard C.
Boillat, Pierre
Simmen, Franziska
Hartmann, Stefan
Frei, Gabriel
Lippert, Thomas
Scherer, Günther G.
Wokaun, Alexander
Source :
Electrochimica Acta. Mar2010, Vol. 55 Issue 8, p2932-2938. 7p.
Publication Year :
2010

Abstract

Abstract: A simplified, miniaturized polymer electrolyte fuel cell without gas diffusion layers was investigated under operation by neutron radiography. By visualizing liquid water, it was possible to identify limiting effects, which are directly related to the simplified construction principle. Depending on the operation conditions, undesired water accumulation either in particular micro-channels or on the cathode catalyst layer as well as drying of the anode catalyst layer was observed. As a consequence, the design of a fuel cell without gas diffusion layers must take into account these limitations visualized by neutron radiography. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00134686
Volume :
55
Issue :
8
Database :
Academic Search Index
Journal :
Electrochimica Acta
Publication Type :
Academic Journal
Accession number :
48258924
Full Text :
https://doi.org/10.1016/j.electacta.2009.12.061