Thermoelectric performance of NiyMo3Sb7−xTex (y≤0.1, 1.5≤x≤1.7)
作者： H. Xu , K. M. Kleinke , T. Holgate , H. Zhang , Z. Su
DOI: 10.1063/1.3086641
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摘要: Mo3Sb7−xTex is a high temperature thermoelectric material, reported to reach figure of merit (ZT)=0.8 at 1023 K. Various p-type samples NiyMo3Sb7−xTex were prepared with y≤0.1 and 1.5≤x≤1.7 via reactions 993 Adding transition metal atoms into the empty cube formed by Sb significantly alters band structure thus properties. Electronic calculations indicate that adding Ni slightly increases charge carrier concentration, while higher Te content causes decrease. Thermoelectric properties determined on pellets densified hot pressing Seebeck as well electrical thermal conductivity measurements performed up The highest ZT value far was obtained from sample nominal composition Ni0.06Mo3Sb5.4Te1.6, which amounts 0.93
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