Degradation of Nafion due to contamination from Swelling-Dehydration Cycles

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

187 Downloads (Pure)

Resumé

Formation of sulfonic anhydride S-O-S (from condensation of sulfonic acids) is known as a possible degradation mechanism for Nafion® membranes under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. A similar mechanism may also contribute 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 traces calcium in the nominally pure water used in the experiment was found to be the primary reason for the deterioration of the membrane properties. Trace impurities in the liquid methanol feed in DMFC may therefore represent an important contamination source.
OriginalsprogEngelsk
Publikationsdato3. jul. 2011
StatusUdgivet - 3. jul. 2011
BegivenhedSolid State Ionic Conference - 18 - Hotel Marriott, Warszawa, Al. Jerozolimskie 65-79, Warszawa, Polen
Varighed: 3. jul. 20128. jul. 2012
Konferencens nummer: SSI-18

Konference

KonferenceSolid State Ionic Conference - 18
NummerSSI-18
LokationHotel Marriott, Warszawa, Al. Jerozolimskie 65-79
LandPolen
ByWarszawa
Periode03/07/201208/07/2012

Fingeraftryk

dehydration
swelling
fuel cell
membrane
methanol
degradation
liquid
electrolyte
condensation
experiment
calcium
hydrogen
contamination
acid
water

Citer dette

Andersen, S. M., Morgen, P., & Skou, E. M. (2011). Degradation of Nafion due to contamination from Swelling-Dehydration Cycles. Poster session præsenteret på Solid State Ionic Conference - 18, Warszawa, Polen.
Andersen, Shuang Ma ; Morgen, Per ; Skou, Eivind Morten. / Degradation of Nafion due to contamination from Swelling-Dehydration Cycles. Poster session præsenteret på Solid State Ionic Conference - 18, Warszawa, Polen.
@conference{e8b9023e47344096a6b1a96871244835,
title = "Degradation of Nafion due to contamination from Swelling-Dehydration Cycles",
abstract = "Formation of sulfonic anhydride S-O-S (from condensation of sulfonic acids) is known as a possible degradation mechanism for Nafion{\circledR} membranes under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. A similar mechanism may also contribute 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 traces calcium in the nominally pure water used in the experiment was found to be the primary reason for the deterioration of the membrane properties. Trace impurities in the liquid methanol feed in DMFC may therefore represent an important contamination source.",
author = "Andersen, {Shuang Ma} and Per Morgen and Skou, {Eivind Morten}",
year = "2011",
month = "7",
day = "3",
language = "English",
note = "Solid State Ionic Conference - 18 ; Conference date: 03-07-2012 Through 08-07-2012",

}

Andersen, SM, Morgen, P & Skou, EM 2011, 'Degradation of Nafion due to contamination from Swelling-Dehydration Cycles' Solid State Ionic Conference - 18, Warszawa, Polen, 03/07/2012 - 08/07/2012, .

Degradation of Nafion due to contamination from Swelling-Dehydration Cycles. / Andersen, Shuang Ma; Morgen, Per; Skou, Eivind Morten.

2011. Poster session præsenteret på Solid State Ionic Conference - 18, Warszawa, Polen.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

TY - CONF

T1 - Degradation of Nafion due to contamination from Swelling-Dehydration Cycles

AU - Andersen, Shuang Ma

AU - Morgen, Per

AU - Skou, Eivind Morten

PY - 2011/7/3

Y1 - 2011/7/3

N2 - Formation of sulfonic anhydride S-O-S (from condensation of sulfonic acids) is known as a possible degradation mechanism for Nafion® membranes under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. A similar mechanism may also contribute 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 traces calcium in the nominally pure water used in the experiment was found to be the primary reason for the deterioration of the membrane properties. Trace impurities in the liquid methanol feed in DMFC may therefore represent an important contamination source.

AB - Formation of sulfonic anhydride S-O-S (from condensation of sulfonic acids) is known as a possible degradation mechanism for Nafion® membranes under hydrothermal aging condition, which is especially critical for hydrogen fuel cells. A similar mechanism may also contribute 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 traces calcium in the nominally pure water used in the experiment was found to be the primary reason for the deterioration of the membrane properties. Trace impurities in the liquid methanol feed in DMFC may therefore represent an important contamination source.

M3 - Poster

ER -

Andersen SM, Morgen P, Skou EM. Degradation of Nafion due to contamination from Swelling-Dehydration Cycles. 2011. Poster session præsenteret på Solid State Ionic Conference - 18, Warszawa, Polen.