Thermoelectric properties of p-type CoSb3 nanocomposites with dispersed CoSb3 nanoparticles

被引：33

作者：

Yang, L. ^{[1
]}

Hng, H. H. ^{[1
]}

Li, D. ^{[1
]}

Yan, Q. Y. ^{[1
]}

Ma, J. ^{[1
]}

Zhu, T. J. ^{[2
]}

Zhao, X. B. ^{[2
]}

Huang, H. ^{[3
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Sensors & Actuators Lab, Singapore 639798, Singapore

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 01期

关键词：

cobalt compounds; field emission electron microscopy; grain boundaries; mixing; nanocomposites; nanoparticles; scanning electron microscopy; thermal conductivity; thermoelectricity; X-ray diffraction;

D O I：

10.1063/1.3157202

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

CoSb3 nanocomposites with different contents of CoSb3 nanoparticles were prepared by mixing nanosized CoSb3 particles obtained via polyol method and micron-sized particles obtained via solid state reaction. X-ray diffractometer and field emission scanning electron microscope were used to characterize the prepared products. The thermoelectric properties of the nanocomposites with different amounts of nanoparticles as dispersants were measured from room temperature to around 500 degrees C. Due to the grain boundaries scattering, the lattice thermal conductivity was observed to decrease as the amount of nanoparticles increased. The electrical properties were also improved by the addition of nanoparticles. The ZT value of the nanocomposites with 10 wt % of nanoparticles was nearly doubled that of the sample without any nanoparticles.

引用

页数：6

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