Título:
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Fe3O4@NiFexOy nanoparticles with enhanced electrocatalytic properties for oxygen evolution in carbonate electrolyte
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Autor/a:
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Luo, Zhishan; Martí Sanchez, Sara; Nafria Soler, Raquel; Joshua, Gihan; de la Mata, María; Guardia, Pablo; Flox Donoso, Cristina; Martinez-Boubeta, Carlos; Simeonidis, Konstantinos; Llorca Piqué, Jordi; Morante, Joan Ramon; Arbiol, Jordi; Ibañez, María; Cabot, Andreu
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Otros autores:
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Institut de Recerca en Energía de Catalunya; Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
Abstract:
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The design and engineering of earth-abundant catalysts that are both cost-effective and highly active for water splitting are crucial challenges in a number of energy conversion and storage technologies. In this direction, herein we report the synthesis of Fe3O4@NiFexOy core shell nanoheterostructures and the characterization of their electrocatalytic performance toward the oxygen evolution reaction (OER). Such nanoparticles (NPs) were produced by a two-step synthesis procedure involving the colloidal synthesis of Fe3O4 nanocubes with a defective shell and the posterior diffusion of nickel cations within this defective shell. Fe3O4@NiFexOy NPs were subsequently spin-coated over ITO-covered glass and their electrocatalytic activity toward water oxidation in carbonate electrolyte was characterized. Fe3O4@NiFexOy catalysts reached current densities above 1 mA/cm(2) with a 410 mV overpotential and Tafel slopes of 48 mV/dec, which is among the best electrocatalytic performances reported in carbonate electrolyte. |
Materia(s):
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-Àrees temàtiques de la UPC::Física -Ferric oxide -Magnetite -Nanoparticles -nanoparticle -iron oxide -magnetite -core-shell nanostructure -electrocatalysts -oxygen evolution reaction -OER -Òxids de ferro -Magnetita -Nanopartícules |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Artículo |
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