High temperature thermoelectric properties of p-type skutterudites BaxYbyCo4-zFezSb12

Y. Dong; P. Puneet; T. M. Tritt; J. Martin; G. S. Nolas

doi:10.1063/1.4759370

High temperature thermoelectric properties of p-type skutterudites BaxYbyCo4-zFezSb12

Y. Dong, P. Puneet, T. M. Tritt, J. Martin, G. S. Nolas

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

13 Scopus citations

Abstract

Several polycrystalline p-type skutterudites with compositions Ba xYb yCo 4-zFe zSb 12, with varying filler concentrations x and y, and z = 1 to 2, were synthesized by reacting the constituents and subsequent solid state annealing, followed by densification by hot-pressing. Their thermoelectric properties were evaluated from 300 to 820 K. The Yb filling fraction increased with Fe content while the amount of Fe substitution had little influence on the Ba filling fraction. High purity specimens were obtained when the Fe content was low. Bipolar conduction contributed to the thermal conductivity at elevated temperatures. A maximum ZT value of 0.7 was obtained at 750 K for the specimen with the highest Fe content and filling fraction. The potential for thermoelectric applications is also discussed. © 2012 American Institute of Physics.

Original language	English (US)
Pages (from-to)	083718
Journal	Journal of Applied Physics
Volume	112
Issue number	8
DOIs	https://doi.org/10.1063/1.4759370
State	Published - Oct 25 2012
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Y.D. and G.S.N. gratefully acknowledge financial support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). The work in Dr. Tritt's lab acknowledges in part the support of a KAUST Faculty Initiated Collaboration grant and also some funding from Clemson University.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "High temperature thermoelectric properties of p-type skutterudites BaxYbyCo4-zFezSb12",

abstract = "Several polycrystalline p-type skutterudites with compositions Ba xYb yCo 4-zFe zSb 12, with varying filler concentrations x and y, and z = 1 to 2, were synthesized by reacting the constituents and subsequent solid state annealing, followed by densification by hot-pressing. Their thermoelectric properties were evaluated from 300 to 820 K. The Yb filling fraction increased with Fe content while the amount of Fe substitution had little influence on the Ba filling fraction. High purity specimens were obtained when the Fe content was low. Bipolar conduction contributed to the thermal conductivity at elevated temperatures. A maximum ZT value of 0.7 was obtained at 750 K for the specimen with the highest Fe content and filling fraction. The potential for thermoelectric applications is also discussed. {\textcopyright} 2012 American Institute of Physics.",

author = "Y. Dong and P. Puneet and Tritt, {T. M.} and J. Martin and Nolas, {G. S.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Y.D. and G.S.N. gratefully acknowledge financial support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). The work in Dr. Tritt's lab acknowledges in part the support of a KAUST Faculty Initiated Collaboration grant and also some funding from Clemson University. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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AU - Dong, Y.

AU - Puneet, P.

AU - Tritt, T. M.

AU - Martin, J.

AU - Nolas, G. S.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Y.D. and G.S.N. gratefully acknowledge financial support from the National Science Foundation and Department of Energy Partnership on Thermoelectric Devices for Vehicle Applications (Grant No. 1048796). The work in Dr. Tritt's lab acknowledges in part the support of a KAUST Faculty Initiated Collaboration grant and also some funding from Clemson University. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2012/10/25

Y1 - 2012/10/25

N2 - Several polycrystalline p-type skutterudites with compositions Ba xYb yCo 4-zFe zSb 12, with varying filler concentrations x and y, and z = 1 to 2, were synthesized by reacting the constituents and subsequent solid state annealing, followed by densification by hot-pressing. Their thermoelectric properties were evaluated from 300 to 820 K. The Yb filling fraction increased with Fe content while the amount of Fe substitution had little influence on the Ba filling fraction. High purity specimens were obtained when the Fe content was low. Bipolar conduction contributed to the thermal conductivity at elevated temperatures. A maximum ZT value of 0.7 was obtained at 750 K for the specimen with the highest Fe content and filling fraction. The potential for thermoelectric applications is also discussed. © 2012 American Institute of Physics.

AB - Several polycrystalline p-type skutterudites with compositions Ba xYb yCo 4-zFe zSb 12, with varying filler concentrations x and y, and z = 1 to 2, were synthesized by reacting the constituents and subsequent solid state annealing, followed by densification by hot-pressing. Their thermoelectric properties were evaluated from 300 to 820 K. The Yb filling fraction increased with Fe content while the amount of Fe substitution had little influence on the Ba filling fraction. High purity specimens were obtained when the Fe content was low. Bipolar conduction contributed to the thermal conductivity at elevated temperatures. A maximum ZT value of 0.7 was obtained at 750 K for the specimen with the highest Fe content and filling fraction. The potential for thermoelectric applications is also discussed. © 2012 American Institute of Physics.

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M3 - Article

SN - 0021-8979

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 8

ER -

High temperature thermoelectric properties of p-type skutterudites BaxYbyCo4-zFezSb12

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