Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media

Industrially profitable water splitting is one of the great challenges in the development of a viable and sustainable hydrogen economy. Alkaline electrolysers using Earth-abundant catalysts remain the most economically viable route to electrolytic hydrogen, but improved efficiency is desirable. Rece...

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Autores: Garcés-Pineda, Felipe A., Blasco-Ahicart, Marta, Nieto-Castro, David, López, Núria, Galán-Mascarós, José Ramón
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2072/368596
Acceso en línea:http://hdl.handle.net/2072/368596
https://doi.org/10.1038/s41560-019-0404-4
Access Level:acceso abierto
Palabra clave:54
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spelling Direct magnetic enhancement of electrocatalytic water oxidation in alkaline mediaGarcés-Pineda, Felipe A.Blasco-Ahicart, MartaNieto-Castro, DavidLópez, NúriaGalán-Mascarós, José Ramón54Industrially profitable water splitting is one of the great challenges in the development of a viable and sustainable hydrogen economy. Alkaline electrolysers using Earth-abundant catalysts remain the most economically viable route to electrolytic hydrogen, but improved efficiency is desirable. Recently, electron spin polarization was described as a potential way to improve water-splitting catalysis. Here, we report the significant enhancement of alkaline water electrolysis when a moderate magnetic field (≤450!mT) is applied to the anode. Current density increments above 100% (over 100!mA!cm−2) were found for highly magnetic electrocatalysts, such as the mixed oxide NiZnFe4Ox. Magnetic enhancement works even for decorated Ni–foam electrodes with very high current densities, improving their intrinsic activity by about 40% to reach over 1!A!cm−2 at low overpotentials. Thanks to its simplicity, our discovery opens opportunities for implementing magnetic enhancement in water splitting.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion519 p.application/pdfhttp://hdl.handle.net/2072/368596https://doi.org/10.1038/s41560-019-0404-4RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésCREATE number 721065RTI2018- 095618-B-I02017-SGR-1406L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2072/3685962026-05-29T05:05:01Z
dc.title.none.fl_str_mv Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
title Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
spellingShingle Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
Garcés-Pineda, Felipe A.
54
title_short Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
title_full Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
title_fullStr Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
title_full_unstemmed Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
title_sort Direct magnetic enhancement of electrocatalytic water oxidation in alkaline media
dc.creator.none.fl_str_mv Garcés-Pineda, Felipe A.
Blasco-Ahicart, Marta
Nieto-Castro, David
López, Núria
Galán-Mascarós, José Ramón
author Garcés-Pineda, Felipe A.
author_facet Garcés-Pineda, Felipe A.
Blasco-Ahicart, Marta
Nieto-Castro, David
López, Núria
Galán-Mascarós, José Ramón
author_role author
author2 Blasco-Ahicart, Marta
Nieto-Castro, David
López, Núria
Galán-Mascarós, José Ramón
author2_role author
author
author
author
dc.subject.none.fl_str_mv 54
topic 54
description Industrially profitable water splitting is one of the great challenges in the development of a viable and sustainable hydrogen economy. Alkaline electrolysers using Earth-abundant catalysts remain the most economically viable route to electrolytic hydrogen, but improved efficiency is desirable. Recently, electron spin polarization was described as a potential way to improve water-splitting catalysis. Here, we report the significant enhancement of alkaline water electrolysis when a moderate magnetic field (≤450!mT) is applied to the anode. Current density increments above 100% (over 100!mA!cm−2) were found for highly magnetic electrocatalysts, such as the mixed oxide NiZnFe4Ox. Magnetic enhancement works even for decorated Ni–foam electrodes with very high current densities, improving their intrinsic activity by about 40% to reach over 1!A!cm−2 at low overpotentials. Thanks to its simplicity, our discovery opens opportunities for implementing magnetic enhancement in water splitting.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/2072/368596
https://doi.org/10.1038/s41560-019-0404-4
url http://hdl.handle.net/2072/368596
https://doi.org/10.1038/s41560-019-0404-4
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv CREATE number 721065
RTI2018- 095618-B-I0
2017-SGR-1406
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 519 p.
application/pdf
dc.source.none.fl_str_mv RECERCAT (Dipòsit de la Recerca de Catalunya)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812455

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