Publication
New triazinephosphonate dopants for Nafion proton exchange membranes (PEM)
| dc.contributor.author | Teixeira, Fatima | |
| dc.contributor.author | Teixeira, António P. S. | |
| dc.contributor.author | Rangel, C. M. | |
| dc.date.accessioned | 2024-09-04T10:03:03Z | |
| dc.date.available | 2024-09-04T10:03:03Z | |
| dc.date.issued | 2024-07 | |
| dc.description.abstract | ABSTRACT: A new paradigm for energy is underway demanding decarbonized energy systems. Some of them rely on emerging electrochemical devices, crucial in hydrogen technologies, including fuel cells, CO 2 and water electrolysers, whose applications and performances depend on key components such as their separators/ion-exchange membranes. The most studied and already commercialized Nafion membrane shows great chemical stability, but its water content limits its high proton conduction to a limited range of operating temperatures. Here, we report the synthesis of a new series of triazinephosphonate derivatives and their use as dopants in the preparation of new modified Nafion membranes. The triazinephosphonate derivatives were prepared by substitution of chlorine atoms in cyanuric chloride. Diverse conditions were used to obtain the trisubstituted (4-hydroxyphenyl)triazinephosphonate derivatives and the (4-aminophenyl)triazinephosphonate derivatives, but with these amino counterparts, only the disubstituted compounds were obtained. The new modified Nafion membranes were prepared by casting incorporation of the synthesized 1,3,5-triazinephosphonate (TPs) derivatives. The evaluation of the proton conduction properties of the new membranes and relative humidity (RH) conditions and at 60 degrees C, showed that they present higher proton conductivities than the prepared Nafion membrane and similar or better proton conductivities than commercial Nafion N115, in the same experimental conditions. The Nafion-doped membrane with compound TP2 with a 1.0 wt % loading showed the highest proton conductivity with 84 mScm - 1 . | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Teixeira, F.C., Teixeira, A.P.S. & Rangel, C.M. (2024) New triazinephosphonate dopants for Nafion proton exchange membranes (PEM). In: Beilstein Journal of Organic Chemistry, 2024, vol. 20, p. 1623-1634. https://doi.org/10.3762/bjoc.20.145 | pt_PT |
| dc.identifier.doi | 10.3762/bjoc.20.145 | pt_PT |
| dc.identifier.issn | 1860-5397 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/4333 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Beilstein-Institut | pt_PT |
| dc.relation | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| dc.relation | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| dc.relation.publisherversion | https://doi.org/10.3762/bjoc.20.145 | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Fuel cells | pt_PT |
| dc.subject | Electrolysis | pt_PT |
| dc.subject | Nafion modified membranes | pt_PT |
| dc.subject | Phosphonates | pt_PT |
| dc.subject | Proton exchange membrane | pt_PT |
| dc.subject | PEM | pt_PT |
| dc.title | New triazinephosphonate dopants for Nafion proton exchange membranes (PEM) | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| oaire.awardTitle | Associated Laboratory for Green Chemistry - Clean Technologies and Processes | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50006%2F2020/PT | |
| oaire.citation.endPage | 1634 | pt_PT |
| oaire.citation.startPage | 1623 | pt_PT |
| oaire.citation.title | Beilstein Journal of Organic Chemistry | pt_PT |
| oaire.citation.volume | 20 | pt_PT |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| person.familyName | Teixeira | |
| person.familyName | Teixeira | |
| person.familyName | Rangel | |
| person.givenName | Fatima | |
| person.givenName | António Paulo Silva | |
| person.givenName | Carmen M. | |
| person.identifier.ciencia-id | C014-509B-D1DC | |
| person.identifier.ciencia-id | AA13-FF7C-9E29 | |
| person.identifier.orcid | 0000-0003-0801-2068 | |
| person.identifier.orcid | 0000-0001-7448-0893 | |
| person.identifier.orcid | 0000-0001-7996-8142 | |
| person.identifier.rid | N-5456-2014 | |
| person.identifier.rid | D-5477-2011 | |
| person.identifier.scopus-author-id | 7102746385 | |
| person.identifier.scopus-author-id | 36856362300 | |
| person.identifier.scopus-author-id | 7006108156 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
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