| 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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Chiabrera, Francesco Maria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Operando Electron Microscopy and Impedance Analysis of Solid Oxide Electrolysis and Fuel Cellscitations
- 2023Reconstruction of Low Dimensional Electronic States by Altering the Chemical Arrangement at the SrTiO3 Surfacecitations
- 2022Ion Intercalation in Lanthanum Strontium Ferrite for Aqueous Electrochemical Energy Storage Devicescitations
- 2022The impact of Mn nonstoichiometry on the oxygen mass transport properties of La Sr Mn O thin filmscitations
- 2022Freestanding Perovskite Oxide Filmscitations
- 2022Defect-induced magnetism in homoepitaxial SrTiO3citations
- 2022Defect-induced magnetism in homoepitaxial SrTiO3citations
- 2021Direct Measurement of Oxygen Mass Transport at the Nanoscalecitations
- 2021A high-entropy manganite in an ordered nanocomposite for long-term application in solid oxide cells
- 2019Interface Engineering in Mixed Ionic Electronic Conductor Thin Films for Solid State Devices
- 2019Engineering Transport in Manganites by Tuning Local Nonstoichiometry in Grain Boundariescitations
Places of action
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article
Direct Measurement of Oxygen Mass Transport at the Nanoscale
Abstract
Tuning oxygen mass transport properties at the nanoscale offers a promising approach for developing high performing energy materials. A number of strategies for engineering interfaces with enhanced oxygen diffusivity and surface exchange have been proposed. However, the origin and the magnitude of such local effects remain largely undisclosed to date due to the lack of direct measurement tools with sufficient resolution. In this work, atom probe tomography with sub-nanometer resolution is used to study oxygen mass transport on oxygen-isotope exchanged thin films of lanthanum chromite. A direct 3D visualization of nanoscaled highly conducting oxygen incorporation pathways along grain boundaries, with reliable quantification of the oxygen kinetic parameters and correlative link to local chemistries, is presented. Combined with finite element simulations of the exact nanostructure, isotope exchange-atom probe tomography allowed quantifying an enhancement in the grain boundary oxygen diffusivity and in the surface exchange coefficient of lanthanum chromite of about 4 and 3 orders of magnitude, respectively, compared to the bulk. This remarkable increase of the oxygen kinetics in an interface-dominated material is unambiguously attributed to grain boundary conduction highways thanks to the use of a powerful technique that can be straightforwardly extended to the study of currently inaccessible multiple nanoscale mass transport phenomena.