Rapid synthesis, microstructure, and thermoelectric properties of skutterudites

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Ying Lei
  • Wensheng Gao
  • Rui Zheng
  • Yu Li
  • Rundong Wan
  • Wen Chen
  • Leiqiang Ma
  • Hongwei Zhou

Detail(s)

Original languageEnglish
Pages (from-to)537-542
Journal / PublicationJournal of Alloys and Compounds
Volume806
Early online date20 Jul 2019
Publication statusPublished - 25 Oct 2019

Abstract

A series of Se- and Te-doped skutterudite Co4Sb11.9-xTexSe0.1 (x = 0.2, 0.3, 0.4, 0.5, 0.6) samples are prepared by a process encompassing rapid microwave synthesis for 5 min and spark plasma sintering for 5 min and their microstructure and thermoelectric properties are studied. Nearly single-phase Co4Sb11.9-xTexSe0.1 ingots are produced by the microwave synthesis and matrix grains appear after the microwave treatment. The influence of the dopant concentration on the thermoelectric properties is discussed. The largest dimensionless thermoelectric figure of merit of 0.81 is observed from Co4Sb11.5Te0.4Se0.1 at 773 K in addition to a thermal conductivity of 2.8 Wm−1K−1. The preparation technique presented here has many advantages compared to conventional methods especially the efficiency.

Research Area(s)

  • Microstructure, Microwave synthesis, Skutterudites, Thermoelectric performance

Citation Format(s)

Rapid synthesis, microstructure, and thermoelectric properties of skutterudites. / Lei, Ying; Gao, Wensheng; Zheng, Rui; Li, Yu; Wan, Rundong; Chen, Wen; Ma, Leiqiang; Zhou, Hongwei; Chu, Paul K.

In: Journal of Alloys and Compounds, Vol. 806, 25.10.2019, p. 537-542.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review