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Title: Microstructural aspects affecting the performance of thermoelectric oxides: selected examples
Author: Kovalevsky, Andrei V.
Arias-Serrano, Blanca I.
Constantinescu, Gabriel
Zakharchuk, Kiryl
Rasekh, Shahed
Ferreira, Nuno M.
Xie, Wenjie
Weidenkaff, Anke
Frade, Jorge R.
Keywords: Thermoelectric oxide
Strontium titanate
Zinc oxide
Calcium cobaltite
Calcium manganite
Issue Date: 2021
Abstract: Oxide materials represent certain advantages as compared to traditional thermoelectric materials, including stability at high temperatures and versatility regarding the gas atmosphere composition. Microstructural aspects play a crucial role in the performance of oxides, often dominating even over chemical composition effects. Thus, engineering the microstructure in these materials represents a powerful tool towards improving their thermoelectric performance, both in terms of the maximum output and stable operation at elevated temperatures. This work reviews some representative cases observed for the main thermoelectric oxide families, such as ZnO, SrTiO3, Ca3Co4O9 and CaMnO3-based systems. The selected examples highlight the impacts of the relevant microstructural features, including the presence of porosity, phase morphology and interfaces, on the thermoelectric properties and their evolution with time.
Peer review: no
Appears in Collections:CICECO - Comunicações
DEMaC - Comunicações

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