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A model for mass transport in the electrolyte membrane of a DMFC
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
2007 (English)In: Journal of Applied Electrochemistry, ISSN 0021-891X, E-ISSN 1572-8838, Vol. 37, no 4, 429-438 p.Article in journal (Refereed) Published
Abstract [en]

A steady state model for multicomponent mass transport was derived for the direct methanol fuel cell membrane. Data for development and validation of the model was taken both from experiments and literature. The experimental data was collected in a polarisation cell, where mass transport of methanol across the electrolyte membrane was measured through a potentiostatic method. The results from modelling and experiments showed good agreement. The model was capable of describing the non-linear response in mass transport to increased methanol feed concentration. The model also accurately described the change in membrane conductivity with methanol concentration. From the model transport equations, it was also possible to derive some characteristic transport parameters, namely the electro osmotic drag of both water and methanol, diffusive drag of water and methanol, and effective, concentration dependent, diffusion coefficients for methanol and water.

Place, publisher, year, edition, pages
2007. Vol. 37, no 4, 429-438 p.
Keyword [en]
direct methanol fuel cell, modelling, mass transport, methanol crossover, electrolyte membrane, methanol fuel-cell, proton-exchange membranes, open-circuit voltage, nafion membranes, diffusion-coefficient, ionomeric membranes, electroosmotic drag, water-uptake, performance, crossover
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-16433DOI: 10.1007/s10800-006-9257-1ISI: 000244689100003Scopus ID: 2-s2.0-33847721423OAI: oai:DiVA.org:kth-16433DiVA: diva2:334475
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Mass transport in proton conducting membranes for the direct methanol fuel cell
Open this publication in new window or tab >>Mass transport in proton conducting membranes for the direct methanol fuel cell
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2005. 25 p.
Series
Trita-KET, ISSN 1104-3466 ; 214
Keyword
Chemical engineering, Kemiteknik
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-309 (URN)
Presentation
2005-07-13, 15:00
Supervisors
Note
QC 20110104Available from: 2005-07-15 Created: 2005-07-15 Last updated: 2011-01-04Bibliographically approved

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Lindbergh, Göran

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