A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes
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A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes

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A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes

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dc.contributor.author Escorihuela Fuentes, Jorge
dc.contributor.author García Bernabé, Abel
dc.contributor.author Compañ, Vicente
dc.date.accessioned 2020-12-29T10:36:32Z
dc.date.available 2020-12-29T10:36:32Z
dc.date.issued 2020
dc.identifier.uri https://hdl.handle.net/10550/76824
dc.description.abstract The use of phosphoric acid doped polybenzimidazole (PBI) membranes for fuel cell applications has been extensively studied in the past decades. In this article, we present a systematic study of the physicochemical properties and proton conductivity of PBI membranes doped with the commonly used phosphoric acid at different concentrations (0.1, 1, and 14 M), and with other alternative acids such as phytic acid (0.075 M) and phosphotungstic acid (HPW, 0.1 M). The use of these three acids was reflected in the formation of channels in the polymeric network as observed by cross-section SEM images. The acid doping enhanced proton conductivity of PBI membranes and, after doping, these conducting materials maintained their mechanical properties and thermal stability for their application as proton exchange membrane fuel cells, capable of operating at intermediate or high temperatures. Under doping with similar acidic concentrations, membranes with phytic acid displayed a superior conducting behavior when compared to doping with phosphoric acid or phosphotungstic acid.
dc.language.iso eng
dc.relation.ispartof Polymers, 2020, vol. 12, num. 6, p. 1374
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Escorihuela Fuentes, Jorge García Bernabé, Abel Compañ, Vicente 2020 A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes Polymers 12 6 1374
dc.subject Electroquímica
dc.subject Àcids
dc.title A Deep Insight into Different Acidic Additives as Doping Agents for Enhancing Proton Conductivity on Polybenzimidazole Membranes
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-12-29T10:36:32Z
dc.identifier.doi https://doi.org/10.3390/polym12061374
dc.identifier.idgrec 142388

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