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The Pore Structure of Direct Methanol Fuel Cell Electrodes
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Materials Chemistry, Structural Chemistry. strukturkemi.
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2005 (English)In: Journal of the Electrochemical Society, Vol. 152, no 9, A1844-A1850 p.Article in journal (Refereed) Published
Abstract [en]

The pore structure and morphology of direct methanol fuel cell electrodes are characterized using mercury intrusion porosimetry and scanning electron microscopy. It is found that the pore size distributions of printed primer and catalyst layers are largely dictated by the powders used to make the printing ink. The extent to which the pore structure is modified by changing several parameters in the membrane electrode assembly (MEA) manufacturing process is discussed. The pore structure of the printed layers is found to be invariant with respect to changes in powder loading or in choice of printing substrate, and is relatively undisturbed by MEA hot-pressing. Changing the source of the primer powder and adding a pore-forming agent to the catalyst ink are found to be successful methods of creating a more open pore structure in the printed layers.

Place, publisher, year, edition, pages
2005. Vol. 152, no 9, A1844-A1850 p.
National Category
Inorganic Chemistry
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URN: urn:nbn:se:uu:diva-76830DOI: doi:10.1149/1.1993488OAI: oai:DiVA.org:uu-76830DiVA: diva2:104742
Available from: 2006-03-08 Created: 2006-03-08 Last updated: 2011-01-11

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Odgaard, MadeleineThomas, John Oswald

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