Solvothermal Synthesis of Tetrahedrite: Speeding Up the Process of Thermoelectric Material Generation

Derak J. James, Xu Lu, Donald T. Morelli, Stephanie L. Brock

    Research output: Contribution to journalArticle

    • 10 Citations

    Abstract

    Derivatives of synthetic tetrahedrite, Cu12Sb4S13, are receiving increasing attention in the thermoelectric community due to their exploitation of plentiful, relatively nontoxic elements, combined with a thermoelectric performance that rivals that of PbTe-based compounds. However, traditional synthetic methods require weeks of annealing at high temperatures (450-600 °C) and periodic regrinding of the samples. Here we report a solvothermal method to produce tetrahedrite that requires only 1 day of heating at a relatively low temperature (155 °C). This allows preparation of multiple samples at once and is potentially scalable. The solvothermal material described herein demonstrates a dimensionless figure of merit (ZT) vs temperature curve comparable to that of solid-state tetrahedrite, achieving the same ZT of 0.63 at 720 K. As with the materials from solid-state synthesis, products from this rapid solvothermal synthesis can be improved by mixing in a 1:1 molar ratio with the Zn-containing natural mineral, tennantite, to achieve 0.9 mol equiv of Zn. This leads to a 36% increase in ZT at 720 K for solvothermal tetrahedrite, to 0.85.

    Original languageEnglish (US)
    Pages (from-to)23623-23632
    Number of pages10
    JournalACS Applied Materials and Interfaces
    Volume7
    Issue number42
    DOIs
    StatePublished - Oct 28 2015

    Profile

    Acetanilides
    Cerebellar Ataxia
    Traffic Accidents
    Temperature
    Butylene Glycols
    Cross Circulation
    Cestoda
    Annealing
    Heating
    Minerals
    Derivatives

    Keywords

    • CuSbS
    • mineral
    • tennantite
    • zinc doping
    • ZT

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Solvothermal Synthesis of Tetrahedrite : Speeding Up the Process of Thermoelectric Material Generation. / James, Derak J.; Lu, Xu; Morelli, Donald T.; Brock, Stephanie L.

    In: ACS Applied Materials and Interfaces, Vol. 7, No. 42, 28.10.2015, p. 23623-23632.

    Research output: Contribution to journalArticle

    James, Derak J.; Lu, Xu; Morelli, Donald T.; Brock, Stephanie L. / Solvothermal Synthesis of Tetrahedrite : Speeding Up the Process of Thermoelectric Material Generation.

    In: ACS Applied Materials and Interfaces, Vol. 7, No. 42, 28.10.2015, p. 23623-23632.

    Research output: Contribution to journalArticle

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    AU - Morelli,Donald T.

    AU - Brock,Stephanie L.

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