A capillary water retention effect to improve medium-temperature fuel cell performance

Download
  1. (PDF, 702 KB)
  2. Get@NRC: A capillary water retention effect to improve medium-temperature fuel cell performance (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/j.elecom.2013.03.018
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleElectrochemistry Communications
ISSN13882481
Volume31
Pages120124; # of pages: 5
SubjectFuel cell; Polymer electrolyte membrane; Medium-temperature; Sulfonated poly(arylene ether sulfone); Morphology
AbstractWe demonstrate that small and narrow hydrophilic conducting morphology in sulfonated aromatic membranes leads to much better fuel cell performance at medium temperature and low humidity conditions than those with larger hydrophilic domains. A comparison of three types of sulfonated poly(arylene ether sulfone)s (SPAES) with random, block, and graft architecture indicates that small hydrophilic domain sizes (less than 5 nm) appear to be important in supporting water retention under low relative humidity (RH) conditions intended for medium temperature (less than 100 degrees Celsius) fuel cell applications. The graft copolymer outperformed both a random copolymer and multiblock copolymer at 120 degrees Celsius and 35% RH fuel cell operating conditions due to capillary condensation of water within the 3-5 nm hydrophilic domains.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS1388248113001094
NRC number53179
NPARC number21268533
Export citationExport as RIS
Report a correctionReport a correction
Record identifier3ac5b5ba-6df7-46d1-99f3-b7f50dfa10ac
Record created2013-09-13
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)