Influence of ZnO nano-inclusions on the transport properties of the CoSb<sub>3</sub> skutterudite - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2013

Influence of ZnO nano-inclusions on the transport properties of the CoSb3 skutterudite

Caroline Chubilleau
  • Fonction : Auteur
  • PersonId : 788079
  • IdRef : 150024134
Bertrand Lenoir
Philippe Masschelein
  • Fonction : Auteur
  • PersonId : 1232961
Anne Dauscher
Christophe Candolfi

Résumé

Addition of nanoparticles into bulk materials is one of the strategies designed to synthesize thermoelectric materials with superior efficiency. The presence of nanoparticles is expected to act as a barrier of the heat transport due to an increased amount of nanoscopic interfaces and to enhance the electronic properties via quantum confinement effects. Here, this approach was applied to the skutterudite CoSb3 matrix in which different amounts of ZnO (2-12 wt.%) nanoparticles were introduced. The samples were densified by spark plasma sintering and characterized by X-ray diffraction and scanning electron microscopy. The thermoelectric properties were investigated in a broad temperature range (2-800 K) to better assess the influence of the ZnO nanoparticles. The nanostructured materials showed a significant enhancement in the thermopower values combined with a slight decrease in the thermal conductivity. A small amount of ZnO nanoparticles (2 wt.%) has a beneficial influence on the dimensionless thermoelectric figure of merit ZT suggesting that introducing stable oxide nanoparticles may be an interesting way to improve the thermoelectric properties of skutterudite compounds.
Fichier principal
Vignette du fichier
ChubilleauVF_JALCOM_avecFig.pdf (1.81 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01288551 , version 1 (21-02-2023)

Identifiants

Citer

Caroline Chubilleau, Bertrand Lenoir, Philippe Masschelein, Anne Dauscher, Christophe Candolfi, et al.. Influence of ZnO nano-inclusions on the transport properties of the CoSb3 skutterudite. Journal of Alloys and Compounds, 2013, 554, pp.340-347. ⟨10.1016/j.jallcom.2012.11.167⟩. ⟨hal-01288551⟩
88 Consultations
17 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More