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Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity

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Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity

dc.contributor.author	Teruel-Juanes, Roberto
dc.contributor.author	Del Río, Carmen
dc.contributor.author	Gil Castell, O.
dc.contributor.author	Primaz, Carmem
dc.contributor.author	Ribes Greus, A.
dc.date.accessioned	2022-12-19T14:55:45Z
dc.date.available	2022-12-19T14:55:45Z
dc.date.issued	2021
dc.identifier.uri	https://hdl.handle.net/10550/84813
dc.description.abstract	A set of styrene-ethylene-butylene-styrene triblock copolymer (SEBS) membranes with 10 or 25 wt% divinyl-benzene (DVB) as a crosslinking agent were prepared and validated. Physicochemical characterization revealed suitable hydrolytic and thermal stability of photo-crosslinked membranes containing 25 wt% DVB and post-sulfonated. These compositions were evaluated in H2/O2 single cells, and electrical and proton conductivities were furtherly assessed. The membranes with the milder post-sulfonation showed greater proton conductivity than those with excessive sulfonation. In terms of electrical conductivity, a universal power law was applied, and the values obtained were low enough for being used as polyelectrolytes. At the analyzed temperatures, the charge transport process follows a long-range pathway or vehicular model. Finally, fuel cell performance revealed the best behavior for the membrane with 25 wt% DVB, photo-crosslinked during 30 min and mild sulfonated, with a promising power density of 526 mW·cm−2. Overall, the results obtained highlight the promising fuel cell performance of these cost-effective triblock copolymer-based membranes and indicate that higher sulfonation does not necessarily imply better power density.
dc.language.iso	eng
dc.relation.ispartof	Journal of Applied Polymer Science, 2021, vol. 138, num. 28, p. 50671
dc.source	Teruel-Juanes, Roberto Del Río, Carmen Gil Castell, O. Primaz, Carmem Ribes Greus, A. 2021 Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity Journal of Applied Polymer Science 138 28 50671
dc.subject	Solucions polimèriques
dc.subject	Materials
dc.title	Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity
dc.type	journal article	es_ES
dc.date.updated	2022-12-19T14:55:45Z
dc.identifier.doi	https://doi.org/10.1002/app.50671
dc.identifier.idgrec	155952
dc.rights.accessRights	open access	es_ES