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

doi:10.1166/jnn.2008.469

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 journal › Article › peer-review

35 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 language	English (US)
Pages (from-to)	4003-4006
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	8
Issue number	8
DOIs	https://doi.org/10.1166/jnn.2008.469
State	Published - Aug 2008
Externally published	Yes

Keywords

Ball milling
Hot press
Low thermal conductivity
Nanostructure
Skutterudites

ASJC Scopus subject areas

Bioengineering
General Chemistry
Biomedical Engineering
General Materials Science
Condensed Matter Physics

Access to Document

10.1166/jnn.2008.469

Cite this

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title = "Nanostructured thermoelectric skutterudite Co 1-xNi xSb 3 alloys",

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.",

keywords = "Ball milling, Hot press, Low thermal conductivity, Nanostructure, Skutterudites",

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

year = "2008",

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doi = "10.1166/jnn.2008.469",

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T1 - Nanostructured thermoelectric skutterudite Co 1-xNi xSb 3 alloys

AU - He, Qinyu

AU - Hao, Qing

AU - Wang, Xiaowei

AU - Yang, Jian

AU - Lan, Yucheng

AU - Yan, Xiao

AU - Yu, Bo

AU - Ma, Yi

AU - Poudel, Bed

AU - Joshi, Giri

AU - Wang, Dezhi

AU - Chen, Gang

AU - Ren, Zhifeng

PY - 2008/8

Y1 - 2008/8

N2 - 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.

AB - 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.

KW - Ball milling

KW - Hot press

KW - Low thermal conductivity

KW - Nanostructure

KW - Skutterudites

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