| 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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Ivanov, Yurii P.
University of Cambridge
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Decoupled High‐Mobility Graphene on Cu(111)/Sapphire via Chemical Vapor Depositioncitations
- 2024Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Aminescitations
- 2024Exogenous Metal Cations in the Synthesis of CsPbBr3 Nanocrystals and Their Interplay with Tertiary Aminescitations
- 2024Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterialcitations
- 2023Synergistic enhancement of hydrogen interactions in palladium–silicon–gold metallic glass with multilayered graphenecitations
- 2023Synergistic enhancement of hydrogen interactions in palladium-gold-silicon metallic glass on multilayered graphenecitations
- 2022Hydrogen storage performance of the multi-principal-component CoFeMnTiVZr alloy in electrochemical and gas-solid reactions.
- 2022Ca Solubility in a BiFeO3-Based System with a Secondary Bi2O3 Phase on a Nanoscale.
- 2022One Hundred-Nanometer-Sized CsPbBr3/m-SiO2 Composites Prepared via Molten-Salts Synthesis are Optimal Green Phosphors for LCD Display Devicescitations
- 2022The effect of Ni or Co additions on the structure of Zr60Cu30Al10 bulk metallic glass revealed by high-energy synchrotron radiationcitations
- 2021In situ correlation between metastable phase-transformation mechanism and kinetics in a metallic glass.
- 2021Strain-induced structure and oxygen transport interactions in epitaxial La 0.6 Sr 0.4 CoO 3− δ thin films
- 2021In situ correlation between metastable phase-transformation mechanism and kinetics in a metallic glasscitations
- 2021In situ correlation between metastable phase-transformation mechanism and kinetics in a metallic glass
- 2021In situ correlation between metastable phase-transformation mechanism and kinetics in a metallic glass
- 2021Transition metal-based high entropy alloy microfiber electrodescitations
- 2021Enhancement of interfacial hydrogen interactions with nanoporous gold-containing metallic glasscitations
- 2021Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activitycitations
- 2020Effective electrocatalytic methanol oxidation of Pd-based metallic glass nanofilmscitations
- 2020Cover Feature: Metallic Glass Films with Nanostructured Periodic Density Fluctuations Supported on Si/SiO2 as an Efficient Hydrogen Sorber (Chem. Eur. J. 37/2020)
- 2020Metallic glass films with nanostructured periodic density fluctuations supported on Si/SiO 2 as an efficient hydrogen sorbercitations
- 2020Metallic Glass Films with Nanostructured Periodic Density Fluctuations Supported on Si/SiO2 as an Efficient Hydrogen Sorber.
- 2017Current induced domain wall motion in cylindrical nanowires
- 2016Tunable magnetic nanowires for biomedical and harsh environment applicationscitations
- 2015Magnetoelectric polymer nanocomposite for flexible electronicscitations
- 2015Fabrication and properties of multiferroic nanocomposite filmscitations
Places of action
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article
Effective electrocatalytic methanol oxidation of Pd-based metallic glass nanofilms
Abstract
Compared to their conventional polycrystalline Pd counterparts, Pd 79 Au 9 Si 12 (at%) - metallic glass (MG) nanofilm (NF) electrocatalysts offer better methanol oxidation reaction (MOR) in alkaline medium, CO poisoning tolerance and catalyst stability even at high scan rates or high methanol concentrations owing to their amorphous structure without grain boundaries. This study evaluates the influence of scan rate and methanol concentration by cyclic voltammetry, frequency-dependent electrochemical impedance spectroscopy and a related equivalent circuit model at different potentials in Pd-Au-Si amorphous NFs. Structural and compositional differences for the NFs are assessed by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), energy dispersive X-ray (EDX) mapping and X-ray diffraction (XRD). The ratio of the forward to reverse peak current density i pf / i pb for the MG NFs is ∼2.2 times higher than for polycrystalline Pd NFs, evidencing better oxidation of methanol to carbon dioxide in the forward scan and less poisoning of the electrocatalysts by carbonaceous ( e.g. CO, HCO) species. Moreover, the electrochemical circuit model obtained from EIS measurements reveals that the MOR occurring around -100 mV increases the capacitance without any significant change in oxidation resistance, whereas CO 2 formation towards lower potentials results in a sharp increase in the capacitance of the Faradaic MOR at the catalyst interface and a slight decrease in the corresponding resistance. These results, together with the high i pf / i pb = 3.37 yielding the minimum amount of carbonaceous species deposited on the thin film during cyclic voltammetry and stability in the alkaline environment, can potentially make these amorphous thin films potential candidates for fuel-cell applications.