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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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Castelli, Ivano Eligio
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Exploring the electronic properties and oxygen vacancy formation in SrTiO3 under straincitations
- 2023Structural and electronic properties of double wall MoSTe nanotubescitations
- 2023Transformations of 2D to 3D Double-Perovskite Nanoplates of Cs2AgBiBr6 Compositioncitations
- 2022Rational Catalyst Design for Higher Propene Partial Electro-oxidation Activity by Alloying Pd with Aucitations
- 2022Bandgap prediction of metal halide perovskites using regression machine learning modelscitations
- 2021Band structure of MoSTe Janus nanotubescitations
- 2021Band structure of MoSTe Janus nanotubescitations
- 2020Machine-learning structural and electronic properties of metal halide perovskites using a hierarchical convolutional neural networkcitations
- 2019High-Entropy Alloys as a Discovery Platform for Electrocatalysiscitations
- 2019Fe-Doping in Double Perovskite PrBaCo2(1-x)Fe2xO6-δ: Insights into Structural and Electronic Effects to Enhance Oxygen Evolution Catalyst Stabilitycitations
- 2018Highly Active Nanoperovskite Catalysts for Oxygen Evolution Reaction: Insights into Activity and Stability of Ba0.5Sr0.5Co0.8Fe0.2O2+δ and PrBaCo2O5+δcitations
- 2018Computational Screening of Light-absorbing Materials for Photoelectrochemical Water Splittingcitations
- 2017Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba2In2O5 Thin Filmscitations
- 2017Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba 2 In 2 O 5 Thin Filmscitations
- 2015Band-gap engineering of functional perovskites through quantum confinement and tunnelingcitations
- 2013Computational Screening of Materials for Water Splitting Applications
- 2013Bandgap Engineering of Double Perovskites for One- and Two-photon Water Splittingcitations
- 2013Stability and bandgaps of layered perovskites for one- and two-photon water splittingcitations
- 2012Computational screening of perovskite metal oxides for optimal solar light capturecitations
Places of action
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article
Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba2In2O5 Thin Films
Abstract
Solid oxide oxygen ion and proton conductors are a highly important class of materials for renewable energy conversion devices like solid oxide fuel cells. Ba<sub>2</sub>In<sub>2</sub>O<sub>5</sub> (BIO) exhibits both oxygen ion and proton conduction, in a dry and humid environment, respectively. In a dry environment, the brownmillerite crystal structure of BIO exhibits an ordered oxygen ion sublattice, which has been speculated to result in anisotropic oxygen ion conduction. The hydrated structure of BIO, however, resembles a perovskite and the protons in it were predicted to be ordered in layers. To complement the significant theoretical and experimental efforts recently reported on the potentially anisotropic conductive properties in BIO, we measure here both the proton and oxygen ion conductivity along different crystallographic directions. Using epitaxial thin films with different crystallographic orientations, the charge transport for both charge carriers is shown to be anisotropic. The anisotropy of the oxygen ion conduction can indeed be explained by the layered structure of the oxygen sublattice of BIO. The anisotropic proton conduction, however, further supports the suggested ordering of the protonic defects in the material. The differences in proton conduction along different crystallographic directions attributed to proton ordering in BIO are of a similar extent as those observed along different crystallographic directions in materials where proton ordering is not present but where protons find preferential conduction pathways through chainlike or layered structures.