| 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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Crisci, Alexandre
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Silver nanowire networks coated with a few nanometer thick aluminum nitride films for ultra-transparent and robust heating applicationscitations
- 2022Green upconversion improvement of TiO2 codoped Er3+-Yb3+ nanoparticles based thin film by adding ALD-Al2O3 for silicon solar cell applicationscitations
- 2020Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating techniquecitations
- 2020Improved critical temperature of superconducting plasma-enhanced atomic layer deposition of niobium nitride thin films by thermal annealingcitations
- 2019Superconducting properties of NbN thin films deposited by plasma enhanced atomic layer deposition using a metalorganic precursor
- 2018Aluminum nitride thin films deposited by hydrogen plasma enhanced and thermal atomic layer deposition
- 2016Al2O3 thin films deposited by thermal atomic layer deposition: Characterization for photovoltaic applicationscitations
- 2016Al2O3 thin films deposited by thermal atomic layer deposition: Characterization for photovoltaic applicationscitations
- 2016Growth of boron nitride films on w-AlN (0001), 4° off-cut 4H-SiC (0001), W (110) and Cr (110) substrates by Chemical Vapor Depositioncitations
- 2016An Atomistic View of the Incipient Growth of Zinc Oxide Nanolayerscitations
- 2015Superconducting properties of NbN thin films deposited by plasma enhanced atomic layer deposition using a metalorganic precursor
- 2014Niobium nitride thin films deposited by high temperature chemical vapor depositioncitations
- 2013Carbon corrosion and platinum nanoparticles ripening under open circuit potential conditionscitations
- 2010The effect of carbon nanolayers on wetting of alumina by NiSi alloyscitations
- 2006Raman Imaging and Kelvin Probe Microscopy for the Examination of the Heterogeneity of Doping in Polycrystalline Boron-Doped Diamond Electrodes
- 2005Micro-Raman scattering from undoped and phosphorus-doped (111) homoepitaxial diamond films: Stress imaging of crackscitations
Places of action
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article
Carbon corrosion and platinum nanoparticles ripening under open circuit potential conditions
Abstract
This study bridges the structural and the chemical properties of a high surface area carbon support (Vulcan XC72) used in proton-exchange membrane fuel cells and its resistance to corrosion under open circuit potential (OCP). Inks composed of Pt/XC72 electrocatalysts, Nafion (R) ionomer and water were aged for 3.5 years under air atmosphere. These conditions cause a mixed potential produced by simultaneous carbon support corrosion and oxygen reduction on Pt. Raman, X-ray photoelectron and Fourier Transform infrared spectroscopy measurements show that the amorphous domains of the Vulcan XC72 support are preferentially oxidized into CO2 during the first 1.5 years of aging at OCP. A much sluggish corrosion rate of the organized domains of the Vulcan XC72 support is observed by Raman and X-ray photoelectron spectroscopy measurements. Fourier-Transformed infrared spectroscopy results indicate that the corrosion of the organized domains of the carbon support produces mostly oxygen-bearing carbon surface groups, and to a minor extent, CO2 molecules at U = 0.80 V vs. RHE. Electron microscopy and electrochemical techniques were used to monitor the morphological changes of the Pt nanoparticles over time, resulting from the Pt-catalysed carbon corrosion. (C) 2012 Elsevier B.V. All rights reserved.