| 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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Daneu, Nina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Mechanochemical preparation of nanocrystalline stannite/chatkalite composite: kinetics of synthesis and thermoelectric propertiescitations
- 2024The intrinsic twinning and enigmatic twisting of aragonite crystalscitations
- 2024Thermally Stable Capacitive Energy-Density and Colossal Electrocaloric and Pyroelectric Effects of Sm-Doped Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 Thin Filmscitations
- 2023Non-stoichiometry and its implications for the properties of PMN–PT thin filmscitations
- 2023Thermoelectric properties of pseudobrookite-based ceramics prepared from natural Fe-Ti-rich heavy mineral sand concentratecitations
- 2023Thermoelectric properties of pseudobrookite-based ceramics prepared from natural Fe-Ti-rich heavy mineral sand concentratecitations
- 2023The manipulation of natural mineral chalcopyrite CuFeS<sub>2</sub><i>via</i> mechanochemistry: properties and thermoelectric potentialcitations
- 2022Formation of contact and multiple cyclic cassiterite twins in SnO2-based ceramics co-doped with cobalt and niobium oxides
- 2022Formation of contact and multiple cyclic cassiterite twins in SnO 2 -based ceramics co-doped with cobalt and niobium oxides
- 2020Twinning in SnO 2 -based ceramics doped with CoO- and Nb 2 O 5 : morphology of multiple twins revealed by electron backscatter diffractioncitations
- 2020Enhanced thermoelectric performance of chalcopyrite nanocomposite via co-milling of synthetic and natural minerals ; Zvýšená termoelektrická účinnost chalkopyritového nanokompozitu pomocí společného mletí syntetických a přírodních minerálůcitations
- 2020A scalable synthesis route for multiscale defect engineering in the sustainable thermoelectric quaternary sulfide Cu26V2Sn6S32citations
- 2018A new complex ternary phase in the Al-Cr-Sc push-pull alloycitations
- 2018Structural characterization of Inversion Boundaries in Doped ZnO
- 2017TEM study of basal-plane inversion boundaries in Sn‐Doped ZnO
Places of action
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article
A scalable synthesis route for multiscale defect engineering in the sustainable thermoelectric quaternary sulfide Cu26V2Sn6S32
Abstract
International audience ; In recent years, thermoelectric materials inspired from the natural mineral colusite have emerged as a new class of environmentally-friendly copper-based sulfides composed of abundant elements. Herein, high performance bulk colusite Cu26V2Sn6S32 materials were synthesized using mechanical alloying and spark plasma sintering of low-cost industrial-grade metal sulfides. This new synthesis route has led to the formation of various types of nano-to-microscale defects, from local Sn-site structural disorder to nano-inclusions and vanadium-rich core-shell microstructures. These multiscale defects have a strong impact over phonon scattering, making it possible to reach ultra-low lattice thermal conductivity. Simultaneously, the electrical transport properties are impacted through variations in charge carrier concentration and effective mass, leading to a synergistical improvement of both electrical and thermal properties. The resulting power factor, over 1 mW m−1 K−2 above 623 K with an average value of 0.86 mW m−1 K−2 over the temperature range 300 ≤ T / K ≤ 650 K, is the highest reported for a germanium-free colusite to date. Our optimization strategy based on defect engineering in bulk materials is an exciting prospect for new low-cost thermoelectric systems.