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Nafion (R)-polybenzimidazole (PBI) composite membranes for DMFC applications
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Structural Chemistry.
2007 (English)In: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 178, no 7-10, 581-585 p.Article in journal (Refereed) Published
Abstract [en]

Nafion®–PBI composites were prepared by diffusing synthesized PBI from solution phase into Nafion® membranes, using different concentrations and drying temperatures. In some cases, Nafion® was treated with diethyl amine to screen the –SO3H groups and thereby avoid the strong acid–base interactions between the polymers during diffusion. The presence of PBI in the membranes was characterized with FT–IR spectroscopy. The performance of the membranes was studied by in-plane conductivity and methanol permeability. The performance ratio (the ratio between conductivity and methanol permeability compared to Nafion®) increased by up to 50% for the composite membranes compared to Nafion®.

Place, publisher, year, edition, pages
2007. Vol. 178, no 7-10, 581-585 p.
Keyword [en]
DMFC, Nafion®, PBI, Composite membranes, Proton conductivity, Methanol permeability
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-13941DOI: 10.1016/j.ssi.2007.01.014ISI: 000246952300020OAI: oai:DiVA.org:uu-13941DiVA: diva2:41711
Available from: 2008-06-03 Created: 2008-06-03 Last updated: 2017-12-11Bibliographically approved

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Brandell, Daniel

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