Self-supported ultra-active NiO-based electrocatalysts for the oxygen evolution reaction by solution combustion
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Título
Self-supported ultra-active NiO-based electrocatalysts for the oxygen evolution reaction by solution combustionAutoría
Fecha de publicación
2021-04-20Editor
Royal Society of ChemistryISSN
2050-7488; 2050-7496Cita bibliográfica
BUCCI, Alberto, et al. Self-supported ultra-active NiO-based electrocatalysts for the oxygen evolution reaction by solution combustion. Journal of Materials Chemistry A, 2021.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.rsc.org/en/journals/journalissues/ta#!recentarticles&advVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
The oxygen evolution reaction (OER) is a fundamental process to develop a technology that can drive energy transition towards renewable and sustainable fuels. Nevertheless, efficient and straightforward methodologies ... [+]
The oxygen evolution reaction (OER) is a fundamental process to develop a technology that can drive energy transition towards renewable and sustainable fuels. Nevertheless, efficient and straightforward methodologies to obtain superior and stable electrodes need to be implemented to approach this technology to real applications. Recently, self-supported catalysis emerged as a promising solution. However, catalyst design is still limited by the low chemical tunability and elevated preparation times and costs. Herein, a solution combustion (SC) methodology is described to produce designed self-supported electrocatalysts that excel in the OER and mitigate previous limitations. M-doped NiO-based electrocatalysts (with M = Fe, Co, Mn, and Zn) were self-supported by the SC method on nickel foam, and overperformed analogous benchmarked catalysts prepared by other methods. Notably, in Fe-doped NiO, the overpotential required to drive the OER at 10 mA cm−2 was found to be 190 mV, the lowest reported so far for metal oxide electrocatalysts at pH 13. By the combination of spectroelectrochemical (SEC) and electrochemical impedance spectroscopy (EIS), we studied the role of the metal dopant cation, showing that dopant metals assist the formation of the active species responsible for the high (electro)catalytic activity. We envision that the presented simple, cost-time efficient methodology would stimulate the preparation and study of effective self-supported metal-oxide catalysts for a broad range of applications. [-]
Descripción
European Patent Application Number EP20382294, a patent application by A. B. and J. L.-F. was previously filed for the intellectual property described in this article
Publicado en
J. Mater. Chem. A, 2021,9, 12700-12710Datos relacionados
https://www.rsc.org/suppdata/d1/ta/d1ta00072a/d1ta00072a1.pdfEntidad financiadora
European Research Foundation | Min | Ministerio de Asuntos Económicos y Transformación Digital | Ministerio de Ciencia, Innovación y Universidades | Gobierno Regional de la Comunidad de Madrid | European Structural Funds
Código del proyecto o subvención
ERC-2015-CoG GREENLIGHT_REDCAT 648304 | ERC CoG HyMAP 648319 (V. O.) | H2020-FETPROACT-01-2016 A-LEAF (S. C., R. R., J. R. D., M. G.-T., S. G., A. B., J. L.-F.) | CTQ2016-80038-R, J. L.-F. | PID2019-110050RB-I00, J. L-F. | AGAUR 2017-SGR-1647 (J. L.-F.) | ENE2017-85087-C3-1-R, S. G./M. G.-T. | PID2019-106315RB-I00 | S2018/NMT-4367
Derechos de acceso
© The Royal Society of Chemistry 2021
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info:eu-repo/semantics/openAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
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