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

Shuang Ma Andersen, Per Morgen, Eivind Morten Skou

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Abstrakt

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
Land/OmrådeDanmark
ByLyngby
Periode30/09/201001/10/2010

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