| 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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Brezesinski, Torsten
Karlsruhe Institute of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Strained single crystal high entropy oxide manganite thin films
- 2024Strained single crystal high entropy oxide manganite thin filmscitations
- 2024Improved Performance of High‐Entropy Disordered Rocksalt Oxyfluoride Cathode by Atomic Layer Deposition Coating for Li‐Ion Batteriescitations
- 2024Effect of salt selection and molar ratio in molten salt synthesis of single-crystalline LiNiO₂
- 2023Atomic Layer Deposition Derived Zirconia Coatings on Ni‐Rich Cathodes in Solid‐State Batteries: Correlation Between Surface Constitution and Cycling Performance
- 2023Simple cathode design for Li-S batteries : cell performance and mechanistic insights by in operando X-ray diffraction
- 2023The effect of configurational entropy on acoustic emission of P2-type layered oxide cathodes for sodium-ion batteriescitations
- 2022Atomic Layer Deposition Derived Zirconia Coatings on Ni‐Rich Cathodes in Solid‐State Batteries: Correlation Between Surface Constitution and Cycling Performancecitations
- 2022Understanding the formation of antiphase boundaries in layered oxide cathode materials and their evolution upon electrochemical cycling
- 2022High-Entropy Polyanionic Lithium Superionic Conductorscitations
- 2021Understanding the formation of antiphase boundaries in layered oxide cathode materials and their evolution upon electrochemical cyclingcitations
- 2021Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO$_{2}$ in optically transparent aqueous dispersionscitations
- 2020From LiNiO₂ to Li₂NiO₃ : Synthesis, Structures and Electrochemical Mechanisms in Li-Rich Nickel Oxidescitations
- 2019Oxygen Activity in Li-Rich Disordered Rock-Salt Oxide and the Influence of LiNbO$_{3}$ Surface Modification on the Electrochemical Performancecitations
- 2019Oxygen Activity in Li-Rich Disordered Rock-Salt Oxide and the Influence of $LiNbO_{3}$ Surface Modification on the Electrochemical Performancecitations
- 2019Thin Films of Thermally Stable Ordered Mesoporous $Rh_{2}O_{3}(I)$ for Visible-Light Photocatalysis and Humidity Sensingcitations
- 2019General Synthesis of Ordered Mesoporous Rare-Earth Orthovanadate Thin Films and Their Use as Photocatalysts and Phosphors for Lighting Applicationscitations
- 2019Robust Macroscopic Polarization of Block Copolymer-Templated Mesoporous Perovskite-Type Thin-Film Ferroelectricscitations
- 2018Electrochemical Tuning of Magnetism in Ordered Mesoporous Transition-Metal Ferrite Films for Micromagnetic Actuationcitations
- 2018Synthesis, structural characterization and magnetic properties of ordered mesoporous $Pr_{1−x}Ca_{x}MnO_{3}$ thin filmscitations
- 2018Silicon nanoparticles with a polymer-derived carbon shell for improved lithium-ion batteries: Investigation into volume expansion, gas evolution, and particle fracturecitations
- 2017Embroidered Copper Microwire Current Collector for Improved Cycling Performance of Silicon Anodes in Lithium-Ion Batteriescitations
- 2017Sustainable and surfactant-free high-throughput synthesis of highly dispersible zirconia nanocrystalscitations
- 2017Applying Capacitive Energy Storage for In Situ Manipulation of Magnetization in Ordered Mesoporous Perovskite-Type LSMO Thin Filmscitations
- 2016In situ tuning of magnetization via topotactic lithium insertion in ordered mesoporous lithium ferrite thin filmscitations
- 2016Microwave synthesis of high-quality and uniform 4 nm ZnFe₂O₄ nanocrystals for application in energy storage and nanomagnetics
- 2015Ionic Conductivity of Mesostructured Yttria-Stabilized Zirconia Thin Films with Cubic Pore Symmetry — On the Influence of Water on the Surface Oxygen Ion Transportcitations
- 2014Polymer-Templated Ordered Large-Pore Mesoporous Anatase–Rutile $mathrm{TiO_2}$:Ta Nanocomposite Films: Microstructure, Electrical Conductivity, and Photocatalytic and Photoelectrochemical Propertiescitations
- 2014Ordered Mesoporous Thin Film Ferroelectrics of Biaxially Textured Lead Zirconate Titanate (PZT) by Chemical Solution Depositioncitations
- 2014Large-Pore Mesoporous $Ho_{3}Fe_{5}O_{12}$ Thin Films with a Strong Room-Temperature Perpendicular Magnetic Anisotropy by Sol–Gel Processingcitations
Places of action
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article
The effect of configurational entropy on acoustic emission of P2-type layered oxide cathodes for sodium-ion batteries
Abstract
Sodium-ion batteries (SIBs) see intensive research and commercialization efforts, aiming to establish them as an alternative to lithium-ion batteries. Among the reported cathode material families for SIBs, Na-deficient P2-type layered oxides are promising candidates, benefiting from fast sodium diffusion and therefore high charge/discharge rates. However, upon sodium extraction at high potentials, a transition from the P2 to O2 phase occurs, with the corresponding change in cell volume resulting in particle fracture and capacity degradation. A possible solution to this is to increase configurational entropy by introducing more elements into the transition-metal layer (so-called high-entropy concept), leading to some kind of structural stabilization. In this work, the acoustic emission (AE) of a series of P2-type layered oxide cathodes with increasing configurational entropy [Na0.67(Mn0.55Ni0.21Co0.24)O2, Na0.67(Mn0.45Ni0.18Co0.24Ti0.1Mg0.03)O2 and Na0.67(Mn0.45Ni0.18Co0.18Ti0.1Mg0.03Al0.04Fe0.02)O2] is recorded during SIB operation and correlated to the materials properties, namely change in c lattice parameter and cracking behavior. A structure-property relationship between entropy, manifested in the extent of phase transition, and detected AE is derived, supported by the classification of signals by peak frequency. This classification in combination with microscopy imaging allows to distinguish between inter- and intragranular fracture. Relatively more intergranular and less intragranular crack formation is observed with increasing configurational entropy.