Thermoelectric properties of Ni0.15Co3.85Sb12 and Fe0.2Ni0.15Co3.65Sb12 skutterudites prepared by HPHT method

• Autorzy: Kong L. , Ma H. , Zhang Y. , Guo X. , Sun B. , Liu B. , Liu H. , Liu B. , Chen J. , Jia X.

Identyfikatory

DOI

10.1515/msp-2017-0069

• Języki publikacji: EN

Abstrakty

EN

N-type polycrystalline skutterudite compounds Ni_0.15Co_3.85Sb₁₂ and Fe_0.2Ni_0.15Co_3.65Sb₁₂ with the bcc crystal structure were synthesized by high pressure and high temperature (HPHT) method. The synthesis time was sharply reduced to approximately half an hour. Typical microstructures connected with lattice deformations and dislocations were incorporated in the samples of Ni_0.15Co_3.85Sb₁₂ and Fe_0.2Ni_0.15Co_3.65Sb₁₂ after HPHT. Electrical and thermal transport properties were meticulously researched in the temperature range of 300 K to 700 K. The Fe_0.2Ni_0.15Co_3.65Sb₁₂ sample shows a lower thermal conductivity than that of Ni_0.15Co_3.85Sb₁₂. The dimensionless thermoelectric figure-of-merit (zT) reaches the maximal values of 0.52 and 0.35 at 600 K and 700 K respectively, for Ni_0.15Co_3.85Sb₁₂ and Fe_0.2Ni_0.15Co_3.65Sb₁₂ samples synthesized at 1 GPa.

Słowa kluczowe

EN

thermoelectric materials; Fe-doping; skutterudit; high pressure

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2017
• Tom: Vol. 35, No. 3
• Strony: 496--500
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Kong L.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Ma H.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Zhang Y.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Guo X.

• Institute of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China

autor

Sun B.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Liu B.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Liu H.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Liu B.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Chen J.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

autor

Jia X.

• National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

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