| 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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Schilm, Jochen
Fraunhofer Institute for Ceramic Technologies and Systems
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Improvement of the thermionic emission properties of C12A7 electride
- 2023Improved Thermal and Mechanical Properties of [Ca24Al28O64]4+(4e-) Electride Ceramic by Adding Mo Metalcitations
- 2023Active Metal Brazed Cu-Si3N4 Composites for Power Electronics
- 2023Glass Ceramic Sealants for Solid Oxide Cellscitations
- 2022Infuence of microstructure and crystalline phases on impedance spectra of sodium conducting glass ceramics produced from glass powdercitations
- 2022Influence of R=Y, Gd, Sm on Crystallization and Sodium Ion Conductivity of Na5RSi4O12 Phasecitations
- 2022Electronic and ionic properties of sintered cathode of LiNi0.6Mn0.2Co0.2O2 (NCM622)citations
- 2022Influence of R=Y, Gd, Sm on crystallization and sodium ion conductivity of Na5RSi4O12 phasecitations
- 2022Polarization impedance at the Na-Na5YSi4O12 interfacecitations
- 2022High frequency impedance measurements of sodium solid electrolytescitations
- 2022Influence of microstructure and crystalline phases on impedance spectra of sodium conducting glass ceramics produced from glass powdercitations
- 2021Influence of the brazing paste composition on the wetting behavior of reactive air brazed metal-ceramic jointscitations
- 2021Li+ conductivity in the system Li2O-Nb2O5-P2O5-LiCl as solid electrolyte based on synthesized glasses and sintered glass ceramicscitations
- 2021Sintering of sodium conducting glass ceramics in the Na2O-Y2O3-SiO2-systemcitations
- 2021Influence of microstructure and crystalline phases on impedance spectra of sodium conducting glass ceramics produced from glass powdercitations
- 2020Synthesis and sintering of Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte for ceramics with improved Li+ conductivitycitations
- 2020Contacting Methods for C12A7 Electride Ceramic
- 2020Impact of precrystallized NaYSi4O12 powders in the synthesis of sodium conducting solid electrolytescitations
- 2020Application of composite coatings as protection/contacting layers for metallic highchromium- content SOFC interconnect material
- 2020Application of composite coatings as protection/contacting layers for metallic high-chromium-content SOFC interconnect material
- 2020Effect of electric load and dual atmosphere on the properties of an alkali containing diopside-based glass sealant for solid oxide cells
- 2020Impact of Precrystallized NaYSi<sub>4</sub>O<sub>12</sub> Powders in the Synthesis of Sodium Conducting Solid Electrolytescitations
- 2019Unlimited colors - Glass powder injection moulding ; Unbegrenzte Farbvielfalt - Glaspulverspritzguss
- 2018Glass ceramics sealants for SOFC interconnects based on a high chromium sinter alloycitations
- 2017Lithium loss indicated formation of microcracks in LATP ceramicscitations
- 2016New glass-ceramic sealants for SOFCs application: characterization and compatibility with interconnects
- 2016Joining technologies for a temperature-stable integration of a LTCC-based pressure sensorcitations
- 2016TiOx-based thermoelectric modules: Manufacturing, properties, and operational behaviorcitations
- 2016An explanation of the microcrack formation in Li1.3Al0.3Ti1.7(PO4)3 ceramics ; An explanation of the microcrack formation in LATP ceramicscitations
- 2016Brazing of kovar to alumina and LTCC for integration of ceramic pressure sensors
- 2016Crystal structure, microstructure and ionic conductivity of the cost-efficient sodium solid electrolyte Na5YSi4O12
- 2014Development and testing of sealing glasses for SOFCs based on CFY-interconnects
Places of action
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article
Influence of R=Y, Gd, Sm on Crystallization and Sodium Ion Conductivity of Na5RSi4O12 Phase
Abstract
<jats:p>New sodium-based battery concepts require solid electrolytes as ion conducting separators. Besides NaSICON and β-Al2O3 in the Na2O-R2O3-SiO2 system (R = rare earth), a rarely noticed glass-ceramic solid electrolyte with the composition Na5RSi4O12 (N5-type) exists. The present study addresses the investigation of the ionic conductivity of Na5RSi4O12 solid electrolytes sintered from pre-crystallized glass-ceramic powders. The sintering behavior (optical dilatometry), the microstructure (SEM/EDX), and phase composition (XRD), as well as electrochemical properties (impedance spectroscopy), were investigated. To evaluate the effect of the ionic radii, Y, Sm and Gd rare elements were chosen. All compositions were successfully synthesized to fully densified compacts having the corresponding conducting N5-type phase as the main component. The densification behavior was in agreement with the melting point, which decreased with increasing ionic radii and specific cell volume. Alternatively, the ionic conductivities of N5-phases decreased from Y to Gd and Sm containing samples. The highest ionic conductivity of 1.82 × 10−3 S cm−1 at 20 °C was obtained for Na5YSi4O12 composition. The impact of grain boundaries and bulk conductivity on measured values is discussed. A powder-based synthesis method of this glass-ceramic solid electrolyte using different rare earth elements opens possibilities for optimizing ionic conductivity and scalable technological processing by tape casting.</jats:p>