Thermoelectric Properties of Ba_xCo₄Sb₁₂ Prepared by High Pressure and High Temperature

Abstract:

Polycrystalline filled Skutterudite compounds Ba_xCo₄Sb₁₂ (0-x-0.5) are synthesized by high pressure and high temperature （HPHT） technique. The thermal conductivity for CoSb₃ is depressed significantly by Ba-filling combined HPHT technique. The value of 1.25 Wm^-1 K^-1 for Ba_0.372Co₄Sb₁₂ is obtained at 633K. The dimensionless thermoelectric figure of merit ZT, increases with temperature increasing and reaches a maximal value of 1.01 at 663 K.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 1615-1619
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.1615
• Online since: December 2011
• Authors: Bing Ke Qin, Yong Hua Ji, Zhi Li, Xiao Peng Jia
• Keywords: Crystal Structure, Filled Skutterudite, HPHT, Thermal Conductivity (TC)

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