How thermoelectric properties of p-type Tl-filled skutterudites are improved | Zendy

Dong-Hun Kim | Zendy; Ken Kurosaki | Zendy; Yuji Ohishi | Zendy; Hiroaki Muta | Zendy; Shinşuke Yamanaka | Zendy

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How thermoelectric properties of p-type Tl-filled skutterudites are improved

Author(s) -

Dong-Hun Kim,

Ken Kurosaki,

Yuji Ohishi,

Hiroaki Muta,

Shinşuke Yamanaka

Publication year - 2013

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4821626

Subject(s) - skutterudite , materials science , thermoelectric effect , ternary operation , phase (matter) , alloy , electrical resistivity and conductivity , thermal conductivity , dimensionless quantity , thermoelectric materials , analytical chemistry (journal) , condensed matter physics , thermodynamics , metallurgy , composite material , physics , chemistry , chromatography , quantum mechanics , computer science , programming language

The high-temperature thermoelectric properties of p-type Tl-filled skutterudites TlxFe1Co3Sb12 (x = 0, 0.2, 0.4, 0.6, and 0.8) were examined. While samples with x ≤ 0.4 were single-phase Tl-filled skutterudite, samples with x = 0.6 and 0.8 were composed of two phases: TlxFe1Co3Sb12 (x ≈ 0.4) as the matrix phase and a Tl-Fe-Sb ternary alloy. The thermal conductivity (κ) was reduced effectively by Tl addition, but the secondary phase increased κ slightly. The maximum value of the dimensionless figure of merit ZT (=S2T/ρ/κ, where T is the absolute temperature) was 0.36 at 723 K for Tl0.2Fe1Co3Sb12

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