Nanostructured AgPbmSbTem+2 system bulk materials with enhanced thermoelectric performance

被引：308

作者：

Zhou, Min ^{[1
]}

Li, Jing-Feng ^{[1
]}

Kita, Takuji ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Toyota Motor Co Ltd, Higashifuji Tech Ctr, Vehicle Engn Grp, China & Mat Engn Div 3,Mishuku, Shizuoka 4101193, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 13期

关键词：

D O I：

10.1021/ja7110652

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanostructured Ag0.8Pbm+xSbTem+2 (m = 18, x = 4.5) system thermoelectric materials have been fabricated by combining mechanical alloying (MA) and spark plasma sintering (SPS) methods followed by annealing for several days to investigate the effect on microstructure and thermoelectric performance. It was found that appropriate annealing treatment could reduce both the electrical resistivity and the thermal conductivity at the same time, consequently greatly enhancing the thermoelectric performance. A low electrical resistivity of 2 x 10(-3) Ohm-cm and low thermal conductivity of 0.89 W m(-1) K-1 were obtained for the sample annealed for 30 days at 700 K. The very low thermal conductivity is supposed to be due to the nanoscopic Ag/Sb-rich regions embedded in the matrix. A high ZT value of 1.5 at 700 K has been achieved for the sample annealed for 30 days.

引用

页码：4527 / 4532

页数：6

共 15 条

[1] Nanostructuring and high thermoelectric efficiency in p-type Ag(Pb1-ySny)mSbTe2+m [J].