Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A sulfophenylated polysulfone as the DMFC electrolyte membrane - an evaluation of methanol permeability and cell performance
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
2006 (English)In: Fuel Cells, ISSN 1615-6846, E-ISSN 1615-6854, Vol. 6, no 5, 340-346 p.Article in journal (Refereed) Published
Abstract [en]

A sulfophenylated polysulfone (PSU-sph), carrying 0.8 sulfonic acid units per repeating unit of the polymer, is evaluated as a membrane electrolyte for DMFC applications. The liquid uptake, methanol transport characteristics, electrolyte conductivity, and fuel cell performance are investigated. The methanol transport and DMFC performance results are compared to those of Nafion(R) 117. The PSU-sph membrane investigated shows superior qualities with regard to methanol crossover, with a methanol permeability of approximately 25% compared to that of Nafion(R). The conductivity measured to be 15% compared to that of Nafion(R). However, this could not fully account for the internal resistance of the cell, implying that the contact resistance between the electrodes and electrolyte is higher when PSU-sph is used, probably because the electrodes are developed for use with Nafion(R) membranes. The stability of the PSU-sph membrane seems promising, with very low degradation observed over a period of 72 hours. It was concluded that although the mass transport properties of the PSU-sph membrane sample investigated were superior, it could not match the performance of Nafion(R) 117 in a DMFC application. However, a higher degree of sulfonation may have a significant positive effect on cell performance. The results also showed that a fully intergrated MEA is needed to fully assess new membrane materials.

Place, publisher, year, edition, pages
2006. Vol. 6, no 5, 340-346 p.
Keyword [en]
conductivity, direct methanol fuel cell, mass transport, methanol permeability, polymer electrolyte membrane, conducting polymer membranes, ether ketone) membranes, fuel-cell, nafion membranes, water-uptake, composite membranes, ionomer membranes, proton, transport, crossover
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-16112DOI: 10.1002/fuce.200500231ISI: 000241801000004Scopus ID: 2-s2.0-33750588591OAI: oai:DiVA.org:kth-16112DiVA: diva2:334154
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

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Lindbergh, Göran

Search in DiVA

By author/editor
Vernersson, ThomasLindbergh, Göran
By organisation
Applied Electrochemistry
In the same journal
Fuel Cells
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 57 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf