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Multi-localization transport behaviour in bulk thermoelectric materials

Author

Listed:
  • Wenyu Zhao

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Ping Wei

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology
    University of Washington)

  • Qingjie Zhang

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Hua Peng

    (School of Physics, State key Laboratory of Crystal Materials, Shandong University)

  • Wanting Zhu

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Dingguo Tang

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Jian Yu

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Hongyu Zhou

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Zhiyuan Liu

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Xin Mu

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Danqi He

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Jichao Li

    (School of Physics, State key Laboratory of Crystal Materials, Shandong University)

  • Chunlei Wang

    (School of Physics, State key Laboratory of Crystal Materials, Shandong University)

  • Xinfeng Tang

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology)

  • Jihui Yang

    (University of Washington)

Abstract

Simultaneously optimizing electrical and thermal transport properties of bulk thermoelectric materials remains a key challenge due to the conflicting combination of material traits. Here, we have explored the electrical and thermal transport features of In-filled CoSb3 through X-ray absorption fine structure, X-ray photoemission spectra, transport measurement and theoretical calculation. The results provide evidence of three types of coexisting multi-localization transport behaviours in the material; these are heat-carrying phonon-localized resonant scattering, accelerated electron movement and increase in density of states near the Fermi level. The 5p-orbital hybridization between In and Sb is discovered in the In-filled CoSb3 compound, which results in a charge transfer from Sb to In and the enhancement of p–d orbital hybridization between Co and Sb. Our work demonstrates that the electrical and thermal properties of filled skutterudite bulk thermoelectric materials can be simultaneously optimized through the three types of coexisting multi-localization transport behaviours in an independent way.

Suggested Citation

  • Wenyu Zhao & Ping Wei & Qingjie Zhang & Hua Peng & Wanting Zhu & Dingguo Tang & Jian Yu & Hongyu Zhou & Zhiyuan Liu & Xin Mu & Danqi He & Jichao Li & Chunlei Wang & Xinfeng Tang & Jihui Yang, 2015. "Multi-localization transport behaviour in bulk thermoelectric materials," Nature Communications, Nature, vol. 6(1), pages 1-7, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7197
    DOI: 10.1038/ncomms7197
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    Cited by:

    1. Ni, Dan & Song, Haijun & Chen, Yuanxun & Cai, Kefeng, 2019. "Free-standing highly conducting PEDOT films for flexible thermoelectric generator," Energy, Elsevier, vol. 170(C), pages 53-61.
    2. Kevin Bethke & Virgil Andrei & Klaus Rademann, 2016. "Decreasing the Effective Thermal Conductivity in Glass Supported Thermoelectric Layers," PLOS ONE, Public Library of Science, vol. 11(3), pages 1-19, March.

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