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Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts

In this study, electrospun carbon fiber electrodes were prepared by the carbonization of PAN–Fe(3)O(4) electrospun fibers at 800 °C for their use as catalysts in the oxygen reduction reaction in an alkaline electrolyte. Magnetic nanofiber mats were fabricated using a needle-free electrospinning meth...

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Autores principales: Mamun, Al, García-Mateos, Francisco José, Sabantina, Lilia, Klöcker, Michaela, Diestelhorst, Elise, Ruiz-Rosas, Ramiro, Rosas, Juana María, Rodríguez-Mirasol, José, Blachowicz, Tomasz, Cordero, Tomás
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609894/
https://www.ncbi.nlm.nih.gov/pubmed/37896307
http://dx.doi.org/10.3390/polym15204064
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author Mamun, Al
García-Mateos, Francisco José
Sabantina, Lilia
Klöcker, Michaela
Diestelhorst, Elise
Ruiz-Rosas, Ramiro
Rosas, Juana María
Rodríguez-Mirasol, José
Blachowicz, Tomasz
Cordero, Tomás
author_facet Mamun, Al
García-Mateos, Francisco José
Sabantina, Lilia
Klöcker, Michaela
Diestelhorst, Elise
Ruiz-Rosas, Ramiro
Rosas, Juana María
Rodríguez-Mirasol, José
Blachowicz, Tomasz
Cordero, Tomás
author_sort Mamun, Al
collection PubMed
description In this study, electrospun carbon fiber electrodes were prepared by the carbonization of PAN–Fe(3)O(4) electrospun fibers at 800 °C for their use as catalysts in the oxygen reduction reaction in an alkaline electrolyte. Magnetic nanofiber mats were fabricated using a needle-free electrospinning method by incorporating magnetic nanoparticles into a polymer solution. Electrochemical tests revealed that the oxygen reduction reaction (ORR) activity is optimized at an intermediate magnetite loading of 30% wt. These catalysts not only show better performance compared to their counterparts but also achieve high selectivity to water at low potentials. The onset and half-wave potentials of 0.92 and 0.76 V shown by these samples are only slightly behind those of the commercial Pt 20%-carbon black ORR catalyst. The obtained results point out that the electrospinning of PAN-Fe(3)O(4) solutions allows the preparation of advanced N-Fe ORR catalysts in fibrillar morphology.
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spelling pubmed-106098942023-10-28 Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts Mamun, Al García-Mateos, Francisco José Sabantina, Lilia Klöcker, Michaela Diestelhorst, Elise Ruiz-Rosas, Ramiro Rosas, Juana María Rodríguez-Mirasol, José Blachowicz, Tomasz Cordero, Tomás Polymers (Basel) Article In this study, electrospun carbon fiber electrodes were prepared by the carbonization of PAN–Fe(3)O(4) electrospun fibers at 800 °C for their use as catalysts in the oxygen reduction reaction in an alkaline electrolyte. Magnetic nanofiber mats were fabricated using a needle-free electrospinning method by incorporating magnetic nanoparticles into a polymer solution. Electrochemical tests revealed that the oxygen reduction reaction (ORR) activity is optimized at an intermediate magnetite loading of 30% wt. These catalysts not only show better performance compared to their counterparts but also achieve high selectivity to water at low potentials. The onset and half-wave potentials of 0.92 and 0.76 V shown by these samples are only slightly behind those of the commercial Pt 20%-carbon black ORR catalyst. The obtained results point out that the electrospinning of PAN-Fe(3)O(4) solutions allows the preparation of advanced N-Fe ORR catalysts in fibrillar morphology. MDPI 2023-10-12 /pmc/articles/PMC10609894/ /pubmed/37896307 http://dx.doi.org/10.3390/polym15204064 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mamun, Al
García-Mateos, Francisco José
Sabantina, Lilia
Klöcker, Michaela
Diestelhorst, Elise
Ruiz-Rosas, Ramiro
Rosas, Juana María
Rodríguez-Mirasol, José
Blachowicz, Tomasz
Cordero, Tomás
Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title_full Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title_fullStr Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title_full_unstemmed Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title_short Electrospinning of Magnetite–Polyacrylonitrile Composites for the Production of Oxygen Reduction Reaction Catalysts
title_sort electrospinning of magnetite–polyacrylonitrile composites for the production of oxygen reduction reaction catalysts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609894/
https://www.ncbi.nlm.nih.gov/pubmed/37896307
http://dx.doi.org/10.3390/polym15204064
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