• effects of different morphologies of bi2te3 nanopowders on thermoelectric properties

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 870
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     thermoelectric bi2te3 alloy nanopowders with different morphologies were synthesized by hydrothermal processes with different surfactants. the nanopowders were hot-pressed into pellets, and their thermoelectric properties were investigated. the results show that the morphologies of the nanopowders have remarkable effects on the thermoelectric properties of the hot-pressed bulk pellets. a suitable microstructure of the bulk pellet prepared from flower-like nanosheets was found, having a lower electrical resistivity, larger seebeck coefficient, and lower thermal conductivity, resulting in a high figure of merit zt ≈ 1.16. the effects of the nanopowders with different morphologies on the microstructure and thermoelectric properties of hot-pressed bulk pellets are discussed.

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