Nanostructured thermoelectric skutterudite Co 1-xNi xSb 3 alloys

Qinyu He, Qing Hao, Xiaowei Wang, Jian Yang, Yucheng Lan, Xiao Yan, Bo Yu, Yi Ma, Bed Poudel, Giri Joshi, Dezhi Wang, Gang Chen, Zhifeng Ren

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Nanostructured Ni-doped skutterudites Co 1-xNi xSb 3 (with x ranging from 0.01 to 0.09) were prepared by ball milling and direct-current induced hot press. It was found that the thermal conductivity was reduced due to strong electron-phonon scattering from Ni-doping as well as phonon scattering from the increased grain boundary of the nanostructures. A maximum dimensionless figure-of-merit of 0.7 was obtained in Co 0.91Ni 0.09Sb 3 at 525°C.

Original languageEnglish (US)
Pages (from-to)4003-4006
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number8
DOIs
StatePublished - Aug 2008
Externally publishedYes

Keywords

  • Ball milling
  • Hot press
  • Low thermal conductivity
  • Nanostructure
  • Skutterudites

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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