Artykuł w czasopiśmie
Brak miniatury
Licencja
CC-BYCC-BY - Uznanie autorstwa
 

Activation of bimetallic PtFe nanoparticles with zeolite-type cesium salts of vanadium-substituted polyoxometallates toward electroreduction of oxygen at low Pt loadings for fuel cells

Uproszczony widok
cris.lastimport.scopus2024-02-12T19:00:35Z
dc.abstract.enThe catalytic activity of commercial carbon-supported PtFe (PtFe/C) nanoparticles admixed with mesoporous polyoxometalate Cs3H3PMo9V3O40, (POM3-3–9), has been evaluated towards oxygen reduction reaction (ORR) in acid medium. The polyoxometalate cesium salt co-catalyst/co-support has been prepared by titration using the aqueous solution of phosphovanadomolibdic acid. The synthesized material has been characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results confirm formation of the polyoxometalate salt with the characteristic Keggin-type structure. The composite catalyst has been prepared by mixing the POM3-3–9 sample with the commercial PtFe/C by sonication. The diagnostic rotating ring-disk voltammetric studies are consistent with good performance of the system with low Pt loading during ORR. The fuel cell membrane electrode assembly (MEA) utilizing the PtFe/POM-based cathode has exhibited comparable or better performance (at relative humidity on the level of 100, 62, and 17%), in comparison to the commercial MEA with higher Pt loading at the cathode. Furthermore, based on the cell potential and power density polarization curves, noticeable improvements in the fuel cell behavior have been observed at the low relative humidity (17%). Finally, the accelerated stress test, which uses the potential square wave between 0.4 V and 0.8 V, has been performed to evaluate MEA stability for at least 100 h. It has been demonstrated that, after initial losses, the proposed catalytic system seems to retain stable performance and good morphological rigidity.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWadas, Anna
dc.contributor.authorRenzi, Marco
dc.contributor.authorMiecznikowski, Krzysztof
dc.contributor.authorRutkowska, Iwona
dc.contributor.authorKulesza, Paweł
dc.contributor.authorNobili, Francesco
dc.contributor.authorKostuch, Aldona
dc.date.accessioned2024-01-24T15:37:56Z
dc.date.available2024-01-24T15:37:56Z
dc.date.copyright2021-11-17
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.versionFINAL_PUBLISHED
dc.description.volume26
dc.identifier.doi10.1007/S10008-021-05088-5
dc.identifier.issn1432-8488
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/100205
dc.identifier.weblinkhttps://link.springer.com/content/pdf/10.1007/s10008-021-05088-5.pdf
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Solid State Electrochemistry
dc.relation.pages3-16
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enOxygen reduction
dc.subject.enPtFe bimetallic catalyst
dc.subject.enPhosphovanadomolibdate co-catalyst
dc.subject.enRotating ring-disk voltammetry
dc.subject.enFuel cell membrane electrode assembly
dc.subject.enAccelerated stress test
dc.titleActivation of bimetallic PtFe nanoparticles with zeolite-type cesium salts of vanadium-substituted polyoxometallates toward electroreduction of oxygen at low Pt loadings for fuel cells
dc.typeJournalArticle
dspace.entity.typePublication