DataVXACS Applied Materials & InterfacesPaper
journal article·2016-11-02Open access

Fe3O4@NiFexOy Nanoparticles with Enhanced Electrocatalytic Properties for Oxygen Evolution in Carbonate Electrolyte

Zhishan Luo, Sara Martí-Sànchez, Raquel Nafria, Gihan Joshua, Maria de la Mata, Pablo Guardia, Cristina Flox, Carlos Martínez-Boubeta, Konstantinos Simeonidis, Jordi Llorca, Joan Ramon Morante, Jordi Arbiol, Maria Ibáñez, Andreu Cabot

ACS Applied Materials & Interfaces· Volume 8· Issue 43
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Source abstract

Abstract

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 Fe 3 O 4 @NiFe x O y 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 Fe 3 O 4 nanocubes with a defective shell and the posterior diffusion of nickel cations within this defective shell. Fe 3 O 4 @NiFe x O y NPs were subsequently spin-coated over ITO-covered glass and their electrocatalytic activity toward water oxidation in carbonate electrolyte was characterized. Fe 3 O 4 @NiFe x O y 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.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageCeramics & glassesNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Fuel Cells and Related Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Catalonia Institute for Energy Research - IREC, Sant Adrià de Besòs, Barcelona 08930, Spain

Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain

Centre de Tecnologia Química de Catalunya and Universitat Rovira i Virgili, Carrer de Marcel·lí Domingo s/n, 43007 Tarragona, Spain

Freelancer, Santiago de Compostela 15701, Spain

Department of Physics, Aristotle University Thessaloniki, 54124 Thessaloniki, Greece

Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya, 08028 Barcelona, Spain

ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain

Funding

Ministerio de Economía y Competitividad · Agència per a la Competitivitat de l’Empresa · Agència de Gestió d’Ajuts Universitaris i de Recerca · Directorate-General for Research and Innovation · Generalitat de Catalunya · China Scholarship Council · Institució Catalana de Recerca i Estudis Avançats · European Regional Development Fund

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