Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles

Research output: Contribution to conference without publisher/journalPosterResearch

Abstract

Formation of sulfonic anhydride S-O-S (from the condensation of sulfonic acids) was known one of the important degradation mechanisms [i] for Nafion membrane under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. Similar mechanism would also have be desirable to the membrane degradation in direct methanol fuel cells (DMFCs), where liquid water has direct contact with the electrolyte. An ex-situ experiment was established with swelling-dehydration cycles on the membrane. However, formation of sulfonic anhydride was not detected during the entire treatment; instead contamination from calcium was found the primary reason for the deterioration of the membrane properties.
Original languageEnglish
Publication date30. Sep 2010
Publication statusPublished - 30. Sep 2010
EventDansk Elektrokemisk Forenings Årsmøde - Lyngby, Denmark
Duration: 30. Sep 20101. Oct 2010

Conference

ConferenceDansk Elektrokemisk Forenings Årsmøde
CountryDenmark
CityLyngby
Period30/09/201001/10/2010

Fingerprint

Sulfonic Acids
Dehydration
Swelling
Contamination
Membranes
Degradation
Anhydrides
Hydrogen fuels
Direct methanol fuel cells (DMFC)
Contacts (fluid mechanics)
Electrolytes
Deterioration
Fuel cells
Condensation
Aging of materials
Calcium
Water
Liquids
Experiments

Keywords

  • Ca contamination
  • Nafion
  • DMFC

Cite this

@conference{3519aafb0c2343969f39d30931380230,
title = "Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles",
abstract = "Formation of sulfonic anhydride S-O-S (from the condensation of sulfonic acids) was known one of the important degradation mechanisms [i] for Nafion membrane under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. Similar mechanism would also have be desirable to the membrane degradation in direct methanol fuel cells (DMFCs), where liquid water has direct contact with the electrolyte. An ex-situ experiment was established with swelling-dehydration cycles on the membrane. However, formation of sulfonic anhydride was not detected during the entire treatment; instead contamination from calcium was found the primary reason for the deterioration of the membrane properties.",
keywords = "Ca contamination, Nafion, DMFC",
author = "Andersen, {Shuang Ma} and Per Morgen and Skou, {Eivind Morten}",
year = "2010",
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language = "English",
note = "null ; Conference date: 30-09-2010 Through 01-10-2010",

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Andersen, SM, Morgen, P & Skou, EM 2010, 'Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles', Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Denmark, 30/09/2010 - 01/10/2010.

Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles. / Andersen, Shuang Ma; Morgen, Per; Skou, Eivind Morten.

2010. Poster session presented at Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Denmark.

Research output: Contribution to conference without publisher/journalPosterResearch

TY - CONF

T1 - Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles

AU - Andersen, Shuang Ma

AU - Morgen, Per

AU - Skou, Eivind Morten

PY - 2010/9/30

Y1 - 2010/9/30

N2 - Formation of sulfonic anhydride S-O-S (from the condensation of sulfonic acids) was known one of the important degradation mechanisms [i] for Nafion membrane under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. Similar mechanism would also have be desirable to the membrane degradation in direct methanol fuel cells (DMFCs), where liquid water has direct contact with the electrolyte. An ex-situ experiment was established with swelling-dehydration cycles on the membrane. However, formation of sulfonic anhydride was not detected during the entire treatment; instead contamination from calcium was found the primary reason for the deterioration of the membrane properties.

AB - Formation of sulfonic anhydride S-O-S (from the condensation of sulfonic acids) was known one of the important degradation mechanisms [i] for Nafion membrane under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. Similar mechanism would also have be desirable to the membrane degradation in direct methanol fuel cells (DMFCs), where liquid water has direct contact with the electrolyte. An ex-situ experiment was established with swelling-dehydration cycles on the membrane. However, formation of sulfonic anhydride was not detected during the entire treatment; instead contamination from calcium was found the primary reason for the deterioration of the membrane properties.

KW - Ca contamination

KW - Nafion

KW - DMFC

M3 - Poster

ER -

Andersen SM, Morgen P, Skou EM. Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles. 2010. Poster session presented at Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Denmark.