High temperature operation of PEMFC: A novel approach using MEA with silica in catalyst layer

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Composite membranes with inorganic substances can retain water and allow the operation of polymer electrolyte membrane fuel cells (PEMFCs) at high temperature under low humidity. In this work, the single cell was operated at high temperature using silica-Nafion composite membrane in addition with silica in catalyst layer. The cell was operated at various temperatures under different relative humidity conditions. We observed that the single cell performance decreased steeply as the cell temperature increased. The role of silica in the catalyst layer at high temperature operation was studied by varying the silica content in the catalyst layers. There was a gradual decrease in cell performance when the silica content increased in catalyst layer. The single cell performance of membrane electrode assemblies (MEAs) with composite membrane and electrode was higher than that of MEA with commercial Nafion 112 membrane for high temperature operation.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2008-01
Language
English
Article Type
Article
Keywords

ELECTROLYTE FUEL-CELLS; COMPOSITE MEMBRANES; ACID; TRANSPORT; WATER

Citation

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.33, no.1, pp.171 - 178

ISSN
0360-3199
DOI
10.1016/j.ijhydene.2007.09.021
URI
http://hdl.handle.net/10203/192897
Appears in Collection
MS-Journal Papers(저널논문)
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