| 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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Bliem, Roland
University of Amsterdam
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Bridging the gap between high-entropy alloys and metallic glasses:Control over disorder and mechanical properties of coatings
- 2023Femtosecond Laser-Induced Emission of Coherent Terahertz Pulses from Ruthenium Thin Filmscitations
- 2023Identifying silicides via plasmon loss satellites in photoemission of the Ru-Si systemcitations
- 2023Why Teflon is so slippery while other polymers are notcitations
- 2022Electronic and structural properties of crystalline and amorphous (TaNbHfTiZr)C from first principlescitations
- 2022Electronic and structural properties of crystalline and amorphous (TaNbHfTiZr)C from first principlescitations
- 2022Ultrathin, sputter-deposited, amorphous alloy films of ruthenium and molybdenumcitations
- 2022Ultrathin, sputter-deposited, amorphous alloy films of ruthenium and molybdenumcitations
- 2021The influence of corrosion on diamond-like carbon topography and friction at the nanoscalecitations
- 2021Hf deposition stabilizes the surface chemistry of perovskite manganite oxidecitations
- 2021Tuning point defects by elastic strain modulates nanoparticle exsolution on perovskite oxidescitations
- 2020Thermally driven interfacial degradation between Li7La3Zr2O12 electrolyte and LiNi0.6Mn0.2Co0.2O2 cathodecitations
- 2020Shape-Preserving Chemical Conversion of Architected Nanocompositescitations
- 2015Adsorption and incorporation of transition metals at the magnetite Fe3O4(001) surfacecitations
Places of action
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article
Thermally driven interfacial degradation between Li7La3Zr2O12 electrolyte and LiNi0.6Mn0.2Co0.2O2 cathode
Abstract
<p>Solid-state batteries offer higher energy density and enhanced safety compared to the present lithium-ion batteries using liquid electrolytes. A challenge to implement them is the high resistances, especially at the solid electrolyte interface with the cathode. Sintering at elevated temperature is needed in order to get good contact between the ceramic solid electrolyte and oxide cathodes and thus to reduce contact resistances. Many solid electrolyte and cathode materials react to form secondary phases. It is necessary to find out which phases arise as a result of interface sintering and evaluate their effect on electrochemical properties. In this work, we assessed the interfacial reactions between LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC622) and Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> (LLZO) as a function of temperature in air. We prepared model systems by depositing thin-film NMC622 cathode layers on LLZO pellets. The thin-film cathode approach enabled us to use interface-sensitive techniques such as X-ray absorption spectroscopy in the near-edge as well as the extended regimes and identify the onset of detrimental reactions. We found that the Ni and Co chemical environments change already at moderate temperatures, on-setting from 500 °C and becoming especially prominent at 700 °C. By analyzing spectroscopy results along with X-ray diffraction, we identified Li<sub>2</sub>CO<sub>3</sub>, La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, and La(Ni,Co)O<sub>3</sub> as the secondary phases that formed at 700 °C. The interfacial resistance for Li transfer, measured by electrochemical impedance spectroscopy, increases significantly upon the onset and evolution of the detected interface chemistry. Our findings suggest that limiting the bonding temperature and avoiding CO<sub>2</sub> in the sintering environment can help to remedy the interfacial degradation.</p>