Increased water retention in polymer electrolyte membranes at elevated temperatures assisted by capillary condensation

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dc.contributor.authorPark, MJen_AU
dc.contributor.authorDowning, KHen_AU
dc.contributor.authorJackson, Aen_AU
dc.contributor.authorGomez, EDen_AU
dc.contributor.authorMinor, AMen_AU
dc.contributor.authorCookson, DJen_AU
dc.contributor.authorWeber, AZen_AU
dc.contributor.authorBalsara, NPen_AU
dc.date.accessioned2008-04-08T03:26:55Zen_AU
dc.date.accessioned2010-04-30T05:03:03Zen_AU
dc.date.available2008-04-08T03:26:55Zen_AU
dc.date.available2010-04-30T05:03:03Zen_AU
dc.date.issued2007-11en_AU
dc.date.statistics2007-11en_AU
dc.description.abstractWe establish a new systematic methodology for controlling the water retention of polymer electrolyte membranes. Block copolymer membranes comprising hydrophilic phases with widths ranging from 2 to 5 nm become wetter as the temperature of the surrounding air is increased at constant relative humidity. The widths of the moist hydrophilic phases were measured by cryogenic electron microscopy experiments performed on humid membranes. Simple calculations suggest that capillary condensation is important at these length scales. The correlation between moisture content and proton conductivity of the membranes is demonstrated. © 2007, American Chemical Societyen_AU
dc.identifier.citationPark, M. J., Downing, K. H., Jackson, A., Gomez, E. D., Minor, A. M., Cookson, D., Weber, A. Z., & Balsara, N. P. (2007). Increased water retention in polymer electrolyte membranes at elevated temperatures assisted by capillary condensation. Nano Letters, 7(11), 3547-3552. doi:10.1021%2Fnl072617len_AU
dc.identifier.govdoc1196en_AU
dc.identifier.issn1530-6984en_AU
dc.identifier.issue11en_AU
dc.identifier.journaltitleNano Lettersen_AU
dc.identifier.pagination3547-3552en_AU
dc.identifier.urihttp://dx.doi.org/10.1021%2Fnl072617len_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1051en_AU
dc.identifier.volume7en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectFuel cellsen_AU
dc.subjectProtonsen_AU
dc.subjectCopolymersen_AU
dc.subjectTransporten_AU
dc.subjectMembranesen_AU
dc.subjectHumidityen_AU
dc.subjectElectron microscopyen_AU
dc.titleIncreased water retention in polymer electrolyte membranes at elevated temperatures assisted by capillary condensationen_AU
dc.typeJournal Articleen_AU
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