热电效应
材料科学
热导率
热电材料
微观结构
纳米结构
功勋
电阻率和电导率
热电发电机
光电子学
纳米技术
冶金
复合材料
热力学
物理
量子力学
作者
Q. Zhang,Jian He,Tiejun Zhu,S. N. Zhang,Xinbing Zhao,Terry M. Tritt
摘要
Mg 2 ( Si , Sn ) compounds have shown great promise for thermoelectric applications due to good thermoelectric properties, nontoxicity, and abundantly available constituent elements. Herein we report on the thermoelectric properties and microstructure of high performance Mg2Si0.4−xSn0.6Sbx (0⩽x⩽0.015) alloys. The state-of-the-art ZT value of ∼1.1 has been attained in the samples with x=0.0075 due to the relatively low thermal conductivity. In light of the simple cubic structure and mostly light constituent elements, the reduction in lattice thermal conductivity has been discussed in connection with a fairly large amount of in situ formed nanostructures in these samples.
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