| 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
Electrospun 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 properties
Abstract
<jats:title>Abstract</jats:title><jats:p>Oxide‐based ceramics offer promising thermoelectric (TE) materials for recycling high‐temperature waste heat, generated extensively from industrial sources. To further improve the functional performance of TE materials, their power factor should be increased. This can be achieved by nanostructuring and texturing the oxide‐based ceramics creating multiple interphases and nanopores, which simultaneously increase the electrical conductivity and the Seebeck coefficient. The aim of this work is to achieve this goal by compacting electrospun nanofibers of 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>, known to be a promising p‐type TE material with good functional properties and thermal stability up to 1200 K in air. For this purpose, polycrystalline 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> nanofibers and nanoribbons were fabricated by sol–gel electrospinning and calcination at intermediate temperatures to obtain small primary particle sizes. Bulk ceramics were formed by sintering pressed compacts of calcined nanofibers during TE measurements. The bulk nanofiber sample pre‐calcined at 973 K exhibited an improved Seebeck coefficient of 176.5 S cm<jats:sup>−1</jats:sup> and a power factor of 2.47 μW cm<jats:sup>−1</jats:sup> K<jats:sup>−2</jats:sup> similar to an electrospun nanofiber‐derived ceramic compacted by spark plasma sintering.</jats:p>