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

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Resumé

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.
OriginalsprogEngelsk
Publikationsdato30. sep. 2010
StatusUdgivet - 30. sep. 2010
BegivenhedDansk Elektrokemisk Forenings Årsmøde - Lyngby, Danmark
Varighed: 30. sep. 20101. okt. 2010

Konference

KonferenceDansk Elektrokemisk Forenings Årsmøde
LandDanmark
ByLyngby
Periode30/09/201001/10/2010

Fingeraftryk

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

Citer dette

Andersen, S. M., Morgen, P., & Skou, E. M. (2010). Degradation and contamination of perfluorinated sulfonic acid membrane due to swelling-dehydration cycles. Poster session præsenteret på Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Danmark.
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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",
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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, Danmark, 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 præsenteret på Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Danmark.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

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 præsenteret på Dansk Elektrokemisk Forenings Årsmøde, Lyngby, Danmark.