| 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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Quinson, Jonathan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Effect of solvothermal synthesis parameters on the crystallite size and atomic structure of cobalt iron oxide nanoparticlescitations
- 2024Monitoring the Morphological Changes of Skeleton-PtCo Electrocatalyst during PEMFC Start-Up/Shut-Downprobed by in situ WAXS and SAXScitations
- 2024Monitoring the Morphological Changes of Skeleton-PtCo Electrocatalyst during PEMFC Start-Up/Shut-Down probed by in situ WAXS and SAXS.citations
- 2024The AUREX cell:a versatile operando electrochemical cell for studying catalytic materials using X-ray diffraction, total scattering and X-ray absorption spectroscopy under working conditions
- 2024The AUREX cell : A versatile operando electrochemical cell for studying catalytic materials using X-ray diffraction, total scattering and X-ray absorption spectroscopy under working conditions
- 2023Chemical Insights into the Formation of Colloidal Iridium Nanoparticles from In Situ X-ray Total Scatteringcitations
- 2023Chemical Insights into the Formation of Colloidal Iridium Nanoparticles from In Situ X-ray Total Scattering:Influence of Precursors and Cations on the Reaction Pathwaycitations
- 2023Chemical Insights into the Formation of Colloidal Iridium Nanoparticles from In Situ X-ray Total Scattering:Influence of Precursors and Cations on the Reaction Pathwaycitations
- 2022Breaking with the Principles of Coreduction to Form Stoichiometric Intermetallic PdCu Nanoparticlescitations
- 2022Nanocomposite Concept for Electrochemical In Situ Preparation of Pt–Au Alloy Nanoparticles for Formic Acid Oxidationcitations
- 2022Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticlescitations
- 2022Nanocomposite Concept for Electrochemical in Situ Preparation of Pt-Au Alloy Nanoparticles for Formic Acid Oxidationcitations
- 2021Operando SAXS study of a Pt/C fuel cell catalyst with an X-ray laboratory sourcecitations
- 2021The Gas Diffusion Electrode Setup as Straightforward Testing Device for Proton Exchange Membrane Water Electrolyzer Catalysts
- 2021Elucidating Pt-Based Nanocomposite Catalysts for the Oxygen Reduction Reaction in Rotating Disk Electrode and Gas Diffusion Electrode Measurementscitations
- 2021Bifunctional Pt-IrO2Catalysts for the Oxygen Evolution and Oxygen Reduction Reactionscitations
- 2020Janus structured multiwalled carbon nanotube forests for simple asymmetric surface functionalization and patterning at the nanoscalecitations
- 2020Solvent-dependent growth and stabilization mechanisms of surfactant-free colloidal Pt nanoparticlescitations
- 2020Solvent-dependent growth and stabilization mechanisms of surfactant-free colloidal Pt nanoparticlescitations
- 2020The Dissolution Dilemma for Low Pt Loading Polymer Electrolyte Membrane Fuel Cell Catalystscitations
- 2018On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Methodcitations
- 2018Solutions for catalysis: A surfactant-free synthesis of precious metal nanoparticle colloids in mono-alcohols for catalysts with enhanced performances
Places of action
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article
Elucidating Pt-Based Nanocomposite Catalysts for the Oxygen Reduction Reaction in Rotating Disk Electrode and Gas Diffusion Electrode Measurements
Abstract
<p>In the present study, we compare different nanoparticle (NP) composites (nanocomposites) as potential electrocatalysts for the oxygen reduction reaction (ORR). The nanocomposites consist of a mixture of Pt and Ir NPs and Pt and Au NPs, respectively, that are immobilized onto a high surface area carbon support. Pt NPs supported on the same carbon support serve as a benchmark. The performance testing was performed in a conventional rotating disk electrode (RDE) setup as well as in a recently introduced gas diffusion electrode (GDE) setup, providing high mass transport conditions. The ORR activity is determined, and the degradation is tested using accelerated degradation tests. It is shown that with respect to the benchmark, the Pt-Au nanocomposite concept exhibits improved ORR activity as well as improved stability both in the RDE and GDE measurements. By comparison, the Pt-Ir nanocomposite exhibits improved stability but lower ORR activity. By combining the GDE approach with small-angle X-ray scattering, it is shown that the improved stability of the Pt-Au nanocomposite can be assigned to a reduced Pt particle growth due to the adjacent Au NPs. The results demonstrate that nanocomposites could be an alternative catalyst design strategy complementing the state-of-the-art alloying concepts.</p>