High-Pressure Synthesis of Skutterudite-Type Thermoelectric Materials

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We have developed a manufacturing system by combination of high-pressure synthesis method using a multi-anvil press, and spark plasma sintering (SPS) method. By means of the system, we have succeeded in synthesizing new filled skutterudite-type thermoelectric materials MmxCo4Sb12 (Mm=mischmetal). The thermoelectric properties of partially filled skutterudite compounds MmxCo4Sb12 synthesized under high pressure have been investigated. The Seebeck coefficient of MmxCo4Sb12 shows negative value, which means n-type conductivity. The highest dimensionless figure of merit ZT value is 0.25 for Mm0.6Co4Sb12 at 700 K.

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Edited by:

C. Sommitsch, M. Ionescu, B. Mishra, E. Kozeschnik and T. Chandra

Pages:

1737-1742

DOI:

10.4028/www.scientific.net/MSF.879.1737

Citation:

C. Sekine, H. Kato, Y. Kawamura, C. H. Lee, "High-Pressure Synthesis of Skutterudite-Type Thermoelectric Materials", Materials Science Forum, Vol. 879, pp. 1737-1742, 2017

Online since:

November 2016

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$35.00

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