Title :
Thermoelectric properties of ternary copper thallium telluride: CuTl9Te5
Author :
Goto, Keita ; Kurosaki, Ken ; Kosuga, Atsuko ; Muta, Hiroaki ; Yamanaka, Shinsuke
Author_Institution :
Div. of Sustainable Energy & Environ. Eng., Osaka Univ., Japan
Abstract :
We prepared high-density polycrystalline samples of Cu2Te, Tl2Te, and CuTl9Te5, and measured the thermoelectric properties. The thermal conductivity of CuTl9Te5 is very low, 0.49 Wm-1K-1 at room temperature. CuTl9Te5 indicates the relatively high figure of merit ZT because of its very low thermal conductivity. The highest ZT value is 0.38 obtained at 590 K for CuTl9Te5.
Keywords :
copper alloys; tellurium alloys; thallium alloys; thermal conductivity; thermoelectricity; 590 K; Cu2Te; CuTl9Te5; Tl2Te; figure-of-merit; high-density polycrystalline Cu2Te; high-density polycrystalline CuTl9Te5; high-density polycrystalline Tl2Te; ternary copper thallium telluride; thermal conductivity; thermoelectric properties; Conducting materials; Copper; Electric resistance; Power engineering and energy; Reactive power; Tellurium; Temperature; Thermal conductivity; Thermoelectricity; Waste materials;
Conference_Titel :
Thermoelectrics, 2005. ICT 2005. 24th International Conference on
Print_ISBN :
0-7803-9552-2
DOI :
10.1109/ICT.2005.1519916