Synthesis and thermoelectric properties of double-filled skutterudites CeyYb0.5-yFe1.5Co2.5Sb12

K. Yang; H. Cheng; H. H. Hng; J. Ma; J. L. Mi; X. B. Zhao; T. J. Zhu; Y. B. Zhang

doi:10.1016/j.jallcom.2007.12.065

Synthesis and thermoelectric properties of double-filled skutterudites Ce_yYb_0.5-yFe_1.5Co_2.5Sb₁₂

K. Yang, H. Cheng, H. H. Hng^*, J. Ma, J. L. Mi, X. B. Zhao, T. J. Zhu, Y. B. Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Ce-Yb double-filled skutterudites Ce_0.5-yYb_yFe_1.5Co_2.5Sb₁₂ (y = 0.1, 0.2, 0.4 and 0.5) were synthesized by a melting method with subsequent annealing. The thermal conductivity, electrical conductivity and Seebeck coefficient were measured from room temperature up to 773 K. The thermal conductivities of all the double-filled skutterudites were found to be lower than the Yb single-filled skutterudites. An enhancement in the dimensionless thermoelectric figure of merit ZT was also observed in all the double-filled skutterudites as compared to the Yb single-filled skutterudite. Ce_0.3Yb_0.2Fe_1.5Co_2.5Sb₁₂ has the highest dimensionless figure of merit ZT of 0.32 at 723 K, which is 55% higher than the Yb single-filled skutterudite at the same temperature.

Original language	English
Pages (from-to)	528-532
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	467
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.12.065
Publication status	Published - Jan 7 2009
Externally published	Yes

ASJC Scopus Subject Areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Keywords

Solid-state reactions
Thermoelectric
Thermoelectric materials
X-ray diffraction

Access to Document

10.1016/j.jallcom.2007.12.065

Cite this

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title = "Synthesis and thermoelectric properties of double-filled skutterudites CeyYb0.5-yFe1.5Co2.5Sb12",

abstract = "Ce-Yb double-filled skutterudites Ce0.5-yYbyFe1.5Co2.5Sb12 (y = 0.1, 0.2, 0.4 and 0.5) were synthesized by a melting method with subsequent annealing. The thermal conductivity, electrical conductivity and Seebeck coefficient were measured from room temperature up to 773 K. The thermal conductivities of all the double-filled skutterudites were found to be lower than the Yb single-filled skutterudites. An enhancement in the dimensionless thermoelectric figure of merit ZT was also observed in all the double-filled skutterudites as compared to the Yb single-filled skutterudite. Ce0.3Yb0.2Fe1.5Co2.5Sb12 has the highest dimensionless figure of merit ZT of 0.32 at 723 K, which is 55% higher than the Yb single-filled skutterudite at the same temperature.",

keywords = "Solid-state reactions, Thermoelectric, Thermoelectric materials, X-ray diffraction",

author = "K. Yang and H. Cheng and Hng, {H. H.} and J. Ma and Mi, {J. L.} and Zhao, {X. B.} and Zhu, {T. J.} and Zhang, {Y. B.}",

year = "2009",

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AU - Yang, K.

AU - Cheng, H.

AU - Hng, H. H.

AU - Ma, J.

AU - Mi, J. L.

AU - Zhao, X. B.

AU - Zhu, T. J.

AU - Zhang, Y. B.

PY - 2009/1/7

Y1 - 2009/1/7

N2 - Ce-Yb double-filled skutterudites Ce0.5-yYbyFe1.5Co2.5Sb12 (y = 0.1, 0.2, 0.4 and 0.5) were synthesized by a melting method with subsequent annealing. The thermal conductivity, electrical conductivity and Seebeck coefficient were measured from room temperature up to 773 K. The thermal conductivities of all the double-filled skutterudites were found to be lower than the Yb single-filled skutterudites. An enhancement in the dimensionless thermoelectric figure of merit ZT was also observed in all the double-filled skutterudites as compared to the Yb single-filled skutterudite. Ce0.3Yb0.2Fe1.5Co2.5Sb12 has the highest dimensionless figure of merit ZT of 0.32 at 723 K, which is 55% higher than the Yb single-filled skutterudite at the same temperature.

AB - Ce-Yb double-filled skutterudites Ce0.5-yYbyFe1.5Co2.5Sb12 (y = 0.1, 0.2, 0.4 and 0.5) were synthesized by a melting method with subsequent annealing. The thermal conductivity, electrical conductivity and Seebeck coefficient were measured from room temperature up to 773 K. The thermal conductivities of all the double-filled skutterudites were found to be lower than the Yb single-filled skutterudites. An enhancement in the dimensionless thermoelectric figure of merit ZT was also observed in all the double-filled skutterudites as compared to the Yb single-filled skutterudite. Ce0.3Yb0.2Fe1.5Co2.5Sb12 has the highest dimensionless figure of merit ZT of 0.32 at 723 K, which is 55% higher than the Yb single-filled skutterudite at the same temperature.

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KW - Thermoelectric

KW - Thermoelectric materials

KW - X-ray diffraction

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