| 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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Redhammer, Günther J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023A Guideline to Mitigate Interfacial Degradation Processes in Solid‐State Batteries Caused by Cross Diffusioncitations
- 2021Chemical Preintercalation of H2V3O8-reduced Graphene Oxide Composites for Improved Na- and Li-ion Battery Cathodescitations
- 2019Particle Consolidation and Electron Transport in Anatase TiO2 Nanocrystal Filmscitations
- 2019Functionalization of Intergranular Regions inside Alkaline Earth Oxide Nanoparticle derived Ceramics
- 2019Structural and spectroscopic characterization of the brownmillerite-type Ca2Fe2-xGaxO5 solid solution seriescitations
- 2019Proton Bulk Diffusion in Cubic Li7La3Zr2O12 Garnets as Probed by Single X-ray Diffractioncitations
- 2017A neutron diffraction study of crystal and low-temperature magnetic structures within the (Na,Li)FeGe2O6 pyroxene-type solid solution seriescitations
- 2016H-bonding scheme and cation partitioning in axinite: a single-crystal neutron diffraction and Mössbauer spectroscopic studycitations
- 2015Single-crystal neutron diffraction and Mössbauer spectroscopic study of hureaulite, (Mn,Fe)$_5$(PO$_4$)$_2$(HPO$_4$)$_2$(H$_2$O)$_4$citations
Places of action
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article
A Guideline to Mitigate Interfacial Degradation Processes in Solid‐State Batteries Caused by Cross Diffusion
Abstract
<jats:title>Abstract</jats:title><jats:p>Diffusion of transition metals across the cathode–electrolyte interface is identified as a key challenge for the practical realization of solid‐state batteries. This is related to the formation of highly resistive interphases impeding the charge transport across the materials. Herein, the hypothesis that formation of interphases is associated with the incorporation of Co into the Li<jats:sub>7</jats:sub>La<jats:sub>3</jats:sub>Zr<jats:sub>2</jats:sub>O<jats:sub>12</jats:sub> lattice representing the starting point of a cascade of degradation processes is investigated. It is shown that Co incorporates into the garnet structure preferably four‐fold coordinated as Co<jats:sup>2+</jats:sup> or Co<jats:sup>3+</jats:sup> depending on oxygen fugacity. The solubility limit of Co is determined to be around 0.16 per formula unit, whereby concentrations beyond this limit causes a cubic‐to‐tetragonal phase transition. Moreover, the temperature‐dependent Co diffusion coefficient is determined, for example, <jats:italic>D</jats:italic><jats:sub>700 °C</jats:sub> = 9.46 × 10<jats:sup>−14</jats:sup> cm<jats:sup>2</jats:sup> s<jats:sup>−1</jats:sup> and an activation energy <jats:italic>E</jats:italic><jats:sub>a</jats:sub> = 1.65 eV, suggesting that detrimental cross diffusion will take place at any relevant process condition. Additionally, the optimal protective Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> coating thickness for relevant temperatures is studied, which allows to create a process diagram to mitigate any degradation with a minimum compromise on electrochemical performance. This study provides a tool to optimize processing conditions toward developing high energy density solid‐state batteries.</jats:p>