High-Temperature Thermoelectric Properties of p-Type Yb-Filled Skutterudite Nanocomposites with FeSb2 Nanoinclusions

被引:10
作者
Zhou, Chen [1 ]
Sakamoto, Jeffery [1 ]
Morelli, Donald [1 ]
机构
[1] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA
关键词
Thermoelectric; nanocomposite; skutterudite; TRANSPORT-PROPERTIES; COSB3; BAND;
D O I
10.1007/s11664-011-1831-6
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Bulk thermoelectric (TE) nanocomposite materials have attracted considerable attention due to their great potential to exhibit higher dimensionless figure of merit . Filled skutterudites of both -type and -type have already demonstrated their excellent high-temperature TE performance, good mechanical properties, and thermal stability. Herein, we extend this work to Yb-filled -type skutterudite nanocomposites with precipitated FeSb2 nanoinclusions. Such a nanocomposite material can be easily synthesized by fine control of starting stoichiometry and the subsequent heat treatment process. By taking advantage of these naturally occurring FeSb2 nanoparticles, we achieve (max) = 0.74 in Yb0.6Fe2Co2Sb12/0.05FeSb(2) at 780 K. We apply the method of four coefficients to calculate the density-of-states effective mass and the carrier scattering parameter. We find that a larger effective mass induced by the presence of nanoparticles is the origin of the enhanced Seebeck coefficient.
引用
收藏
页码:1030 / 1035
页数:6
相关论文
共 29 条
  • [1] Enhanced thermoelectric performance of dual-element-filled skutterudites BaxCeyCo4Sb12
    Bai, S. Q.
    Pei, Y. Z.
    Chen, L. D.
    Zhang, W. Q.
    Zhao, X. Y.
    Yang, J.
    [J]. ACTA MATERIALIA, 2009, 57 (11) : 3135 - 3139
  • [2] Bridgman-solution crystal growth and characterization of the skutterudite compounds CoSb3 and RhSb3
    Caillat, T
    Fleurial, JP
    Borshchevsky, A
    [J]. JOURNAL OF CRYSTAL GROWTH, 1996, 166 (1-4) : 722 - 726
  • [3] Caillat T., 1993, P 28 INT EN CO UNPUB
  • [4] Recent developments in thermoelectric materials
    Chen, G
    Dresselhaus, MS
    Dresselhaus, G
    Fleurial, JP
    Caillat, T
    [J]. INTERNATIONAL MATERIALS REVIEWS, 2003, 48 (01) : 45 - 66
  • [5] CHERNIK IA, 1968, SOV PHYS SEMICOND+, V2, P645
  • [6] Divalent state of ytterbium in YbFe4Sb12 filled skutterudite
    Dedkov, Yu. S.
    Molodtsov, S. L.
    Rosner, H.
    Leithe-Jasper, A.
    Schnelle, W.
    Schmidt, M.
    Grin, Y.
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 : 698 - 699
  • [7] High-Temperature Thermoelectric Properties of Co4Sb12-Based Skutterudites with Multiple Filler Atoms: Ce0.1InxYbyCo4Sb12
    Graff, Jennifer
    Zhu, Song
    Holgate, Tim
    Peng, Jiangying
    He, Jian
    Tritt, Terry M.
    [J]. JOURNAL OF ELECTRONIC MATERIALS, 2011, 40 (05) : 696 - 701
  • [8] Thermopower enhancement in lead telluride nanostructures
    Heremans, JP
    Thrush, CM
    Morelli, DT
    [J]. PHYSICAL REVIEW B, 2004, 70 (11): : 115334 - 1
  • [9] Ioffe A.F., 1957, Semiconductor Thermoelements and Thermoelectric Cooling
  • [10] Low temperature thermal, thermoelectric, and thermomagnetic transport in indium rich Pb1-xSnxTe alloys
    Jovovic, V.
    Thiagarajan, S. J.
    Heremans, J. P.
    Komissarova, T.
    Khokhlov, D.
    Nicorici, A.
    [J]. JOURNAL OF APPLIED PHYSICS, 2008, 103 (05)