Simultaneous Enhancement in the Electrical Conductivity and Reduction in the Lattice Thermal Conductivity Leading to Enhanced Thermoelectric ZT Realized by Incorporation of Metallic Nanoparticles into Oxide Matrix

DOI IR (HANDLE) 1 Citations Open Access
  • Hirata Shinji
    Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Ohtaki Michitaka
    Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University Transdisciplinary Research and Education Center for Green Technologies, Kyushu University

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Description

Abstract: Nanoporous Fe_3O_4 composites containing metallic Cu nanoparticles were synthesized by reducing-leaching treatment of CuFe_2O_4 precursor. Thermoelectric properties of the composites sintered at 1270 ºC greatly improved compared with Fe_3O_4 without Cu, presumably due to a nanoporous structure and the Cu nanoparticles remaining in the Fe_3O_4 matrix after acid leaching. The electrical and thermal conductivity indicate that Cu in the matrix promotes the electron conduction and suppresses the phonon conduction, improving the dimensionless figure-of-merit, ZT.

Journal

  • Evergreen

    Evergreen 7 (1), 1-6, 2020-03

    Transdiscilinary Research and Education Center for Green Technologies, Kyushu University

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Details 詳細情報について

  • CRID
    1390853649779001728
  • NII Article ID
    120006825121
  • DOI
    10.5109/2740934
  • ISSN
    24325953
    21890420
  • HANDLE
    2324/2740934
  • Text Lang
    en
  • Article Type
    journal article
  • Data Source
    • JaLC
    • IRDB
    • Crossref
    • CiNii Articles
    • KAKEN
    • OpenAIRE
  • Abstract License Flag
    Allowed

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