| 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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Feldhoff, Armin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Electrospun Ca<sub>3</sub>Co<sub>4−</sub><i><sub>x</sub></i>O<sub>9+</sub><i><sub>δ</sub></i> nanofibers and nanoribbons: Microstructure and thermoelectric propertiescitations
- 2023Laser generation of CeAlO3 nanocrystals with perovskite structurecitations
- 2023Superior Thermoelectric Performance of Textured Ca<sub>3</sub>Co<sub>4−</sub><i><sub>x</sub></i>O<sub>9+</sub><i><sub>δ</sub></i> Ceramic Nanoribbonscitations
- 2023Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons
- 2023Preparation of Textured Polycrystalline La<sub>2</sub>NiO<sub>4+</sub> <sub>δ</sub> Membranes and Their Oxygen-Transporting Properties
- 2022Cu-Ni-Based Alloys from Nanopowders as Potent Thermoelectric Materials for High-Power Output Applicationscitations
- 2022Electrospun Ca3Co4−xO9+δ nanofibers and nanoribbons: Microstructure and thermoelectric properties
- 2022Experimental application of a laser-based manufacturing process to develop a free customizable, scalable thermoelectric generator demonstrated on a hot shaft
- 2022Tuning the Thermoelectric Performance of CaMnO3-Based Ceramics by Controlled Exsolution and Microstructuring
- 2022Reaction Sintering of Ca3Co4O9 with BiCuSeO Nanosheets for High-Temperature Thermoelectric Compositescitations
- 2021Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of {PEDOT}:{SPAES} Thin Filmscitations
- 2021Spatial Extent of Fluorescence Quenching in Mixed Semiconductor–Metal Nanoparticle Gel Networks
- 2021Reaction sintering of Ca3Co4O9 with BiCuSeO nanosheets for high-temperature thermoelectric composites
- 2021Role of doping agent degree of sulfonation and casting solvent on the electrical conductivity and morphology of pedot:Spaes thin films
- 2021Evaluation of Cu-Ni-Based Alloys for Thermoelectric Energy Conversioncitations
- 2021Permeation improvement of LCCF hollow fiber membranes by spinning and sintering optimizationcitations
- 2019A comprehensive study on improved power materials for high-temperature thermoelectric generatorscitations
- 2016Amorphous, turbostratic and crystalline carbon membranes with hydrogen selectivitycitations
- 2015In situ electron energy-loss spectroscopy of cobalt and iron valences in a mixed conducting perovskite and the correlation to a phase decomposition at intermediate temperatures
- 2015Influence of different sintering techniques on microstructure and phase composition of oxygen-transporting ceramiccitations
- 2009Spin-state transition of iron in (Ba 0.5 Sr 0.5 )(Fe 0.8 Zn 0.2 )O 3- δ perovskitecitations
Places of action
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article
Superior Thermoelectric Performance of Textured Ca<sub>3</sub>Co<sub>4−</sub><i><sub>x</sub></i>O<sub>9+</sub><i><sub>δ</sub></i> Ceramic Nanoribbons
Abstract
<jats:title>Abstract</jats:title><jats:p>Calcium cobaltite Ca<jats:sub>3</jats:sub>Co<jats:sub>4−</jats:sub><jats:italic><jats:sub>x</jats:sub></jats:italic>O<jats:sub>9+</jats:sub><jats:italic><jats:sub>δ</jats:sub></jats:italic> (CCO) is a promising <jats:italic>p</jats:italic>‐type thermoelectric (TE) material for high‐temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm<jats:sup>−1</jats:sup> and an immensely enhanced Seebeck coefficient of 200 µV K<jats:sup>−1</jats:sup> at 1073 K are assembled. The power factor of 4.68 µW cm<jats:sup>−1</jats:sup> K<jats:sup>−2</jats:sup> at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure‐of‐merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.</jats:p>