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Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells

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Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells

dc.contributor.author	Gil Castell, O.
dc.contributor.author	Santiago, Óscar
dc.contributor.author	Pascual-Jose, Borja
dc.contributor.author	Navarro, Emilio
dc.contributor.author	Leo, Teresa J.
dc.contributor.author	Ribes Greus, A.
dc.date.accessioned	2022-12-15T14:16:12Z
dc.date.available	2022-12-15T14:16:12Z
dc.date.issued	2020
dc.identifier.citation	Gil Castell, O. Santiago, Óscar Pascual-Jose, Borja Navarro, Emilio Leo, Teresa J. Ribes Greus, A. 2020 Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells Energy Technology 8 7 2000124
dc.identifier.uri	https://hdl.handle.net/10550/84787
dc.description.abstract	The use of nanotechnology along with the consideration of a functionalization and stabilization approach to poly(vinyl alcohol) (PVA) is considered useful for the preparation of cost-effective polyelectrolyte membranes. A set of nanocomposite and crosslinked membranes based on PVA/sulfosuccinic acid (SSA)/graphene oxide (GO) are prepared and analyzed as polyelectrolytes in direct methanol fuel cells (DMFCs). The crosslinking and sulfonation by the use of SSA enhances the stability and increase the proton-conducting sites in the PVA structure. The presence of GO augments the stability, remarkably decreases the methanol crossover, and enhances power density curves. An optimum value for proton conductivity is found for the 0.50 wt% of GO proportion, which decreases with higher concentrations of GO. Given the power density curve dependency on both the proton conductivity and the crossover reduction, the performance of these membranes as polyelectrolytes in DMFCs is strictly related to the balance between both factors. Therefore, a proportion of GO of 0.75 wt% may assure suitable proton conductivity of 3 mS cm−1 and high resistance to methanol permeability, reaching promising power density of 16 mW cm−2 with lower hydration levels.
dc.language.iso	eng
dc.relation.ispartof	Energy Technology, 2020, vol. 8, num. 7, p. 2000124
dc.subject	Energia
dc.subject	Tecnologia
dc.title	Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells
dc.type	journal article	es_ES
dc.date.updated	2022-12-15T14:16:12Z
dc.identifier.doi	10.1002/ente.202000124
dc.identifier.idgrec	155954
dc.rights.accessRights	open access	es_ES