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Electrochemical characterization of PVDF-based proton conducting membranes for fuel cells
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1998 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 43, 1881-1890 p.Article in journal (Refereed) Published
Abstract [en]

The electrochemical characterization of proton-conducting membranes prepared by irradiation-induced grafting and subsequent sulfonation of PVDF films has been performed. In particular, measurements of the ionic conductivity, oxygen solubility and diffusion in the membranes are presented, as well as kinetic data for the oxygen reduction reaction in a membrane-platinum system and a simulation of the performance of these PVDF-g-PSSA membranes in a solid polymer electrolyte fuel cell using a microcathode technique. At sufficient degrees of grafting (>40%) the conductivity reaches 0.1 Scm−1, well above that of Nafion 117 (DuPont). The PVDF-g-PSSA membranes show lower solubilities and higher diffusion coefficients of oxygen and a higher water uptake than Nafion 117. The microcathode measurements indicate that those PVDF-g-PSSA membranes which have a conductivity higher than that of Nafion 117 may also give improved performance in fuel cell conditions provided that they have the necessary mechanical and chemical stability.

Place, publisher, year, edition, pages
1998. Vol. 43, 1881-1890 p.
Keyword [en]
proton conducting membrane, oxygen solubility, oxygen diffusion, microcathode, fuel cell
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-12979DOI: 10.1016/S0013-4686(97)10005-6OAI: oai:DiVA.org:kth-12979DiVA: diva2:319975
Note

QC 20100520

Available from: 2010-05-20 Created: 2010-05-20 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Attempts to innovative solutions regarding research and development of fuel cells and batteries
Open this publication in new window or tab >>Attempts to innovative solutions regarding research and development of fuel cells and batteries
2001 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2001. 18 p.
Series
Trita-KET, ISSN 1104-3466 ; 151
Keyword
Fuel cells, Battries, Electrodes, Micro-technique, Agglomerate, Innovative
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-1375 (URN)91-7283-204-5 (ISBN)
Presentation
(English)
Note
QC 20100520Available from: 2002-01-23 Created: 2002-01-23 Last updated: 2010-05-20Bibliographically approved

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