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Enhancement of PGM-free oxygen reduction electrocatalyst performance for conventional and enzymatic fuel cells: The influence of an external magnetic field

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cris.lastimport.scopus2024-02-12T20:06:03Z
dc.abstract.enElectrocatalysis can be enhanced either by using more active catalysts or by means of external process intensifications exploiting different energy types. The improvement of oxygen reduction reaction (ORR) efficiency by using an external magnetic field is technologically practical yet poorly scrutinized. An iron/nitrogen/sulfur-co-doped carbon gel (Fe-N-C/S) is studied as a non-precious metal catalyst for the ORR under an external magnetic field generated by a permanent magnet. The application of a magnetic field enhances the ORR process in both acidic and alkaline environments and yields higher selectivity towards 4e− electroreduction of O2. To elucidate the origin of the observed phenomena and show the role of the catalyst’s components, samples either free of sulfur (Fe-N-C) or iron (N-C/S) are studied as references. Moreover, the highly porous carbon gel constitutes an attractive substrate for enzyme immobilization. Modification of the catalyst with laccase (a multicopper oxidase enzyme) additionally strengthens the efficiency of O2 electroreduction.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorDonten, Mikołaj
dc.contributor.authorMatysiak-Brynda, Edyta
dc.contributor.authorMiecznikowski, Krzysztof
dc.contributor.authorSęk, Jakub Piotr
dc.contributor.authorNowicka, Anna
dc.contributor.authorBudner, Bogusław
dc.contributor.authorKiciński, Wojciech
dc.date.accessioned2024-01-24T22:48:32Z
dc.date.available2024-01-24T22:48:32Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.volume258
dc.identifier.doi10.1016/J.APCATB.2019.117955
dc.identifier.issn0926-3373
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/106232
dc.identifier.weblinkhttps://www.sciencedirect.com/science/article/pii/S0926337319307015
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofApplied Catalysis B: Environmental
dc.relation.pagesart.no. 117955
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enPGM-free catalyst
dc.subject.enOxygen reduction reaction
dc.subject.enKelvin force
dc.subject.enEnzymatic biofuel cell
dc.subject.enLaccase
dc.titleEnhancement of PGM-free oxygen reduction electrocatalyst performance for conventional and enzymatic fuel cells: The influence of an external magnetic field
dc.typeJournalArticle
dspace.entity.typePublication