| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Escudero-Escribano, María
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Toward understanding CO oxidation on high-entropy alloy electrocatalystscitations
- 2024Preparation and characterization of bimetallic and multimetallic nanostructured materials for electrocatalysis
- 2024Composition effects of electrodeposited Cu-Ag nanostructured electrocatalysts for CO2 reductioncitations
- 2024Composition effects of electrodeposited Cu-Ag nanostructured electrocatalysts for CO 2 reductioncitations
- 2024Preparation of Tunable Cu−Ag Nanostructures by Electrodeposition in a Deep Eutectic Solventcitations
- 2023Nanostructured Ir-based electrocatalysts for oxygen evolution prepared by galvanic displacement of Co and Nicitations
- 2022Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticlescitations
- 2022Pd-Au Nanostructured Electrocatalysts with Tunable Compositions for Formic Acid Oxidationcitations
- 2022Pd-Au Nanostructured Electrocatalysts with Tunable Compositions for Formic Acid Oxidationcitations
- 2021Preparation of high surface area Cu-Au bimetallic nanostructured materials by co-electrodeposition in a deep eutectic solventcitations
Places of action
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article
Nanostructured Ir-based electrocatalysts for oxygen evolution prepared by galvanic displacement of Co and Ni
Abstract
<p>Proton exchange membrane (PEM) electrolysers are promising devices to produce hydrogen as a green fuel. Currently, this technology is limited by the sluggish kinetics of the oxygen evolution reaction (OER). In this work, we describe an environmentally safe method for the preparation of Ir oxide thin films (IrO<sub>2</sub>) for OER. Electrodeposition of Co and Ni was performed in the non-toxic choline chloride:urea deep eutectic solvent (ChCl:urea DES), followed by galvanic displacement reaction (GDR) of Co and Ni by Ir(IV). We evaluated how the GDR conditions, such as the metal replaced (Co or Ni), time and temperature affect both the activity and stability of the deposited IrO<sub>2</sub> films on gold substrates. We observed that GDR of Ni at 90 °C induces morphological changes on the IrO<sub>2</sub> nanostructures which resulted in higher activity and stability towards OER. We highlight that not only reducing mass loadings of Ir but also tuning the surface morphology and structure controlling the synthesis preparation, as well as investigating the role of the substrate, are key to design more active and stable OER electrocatalysts.</p>