Thermoelectric properties of Bi3+ substituted Co-based misfit-layered oxides

被引：45

作者：

Liu, Yuheng ^{[1
]}

Lin, Yuanhua ^{[1
]}

Jiang, Lei ^{[1
]}

Nan, Ce-Wen ^{[1
]}

Shen, Zhijian ^{[2
]}

机构：

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

[2] Stockholm Univ, Dept Inorgan Chem, Arrhenius Lab, S-10691 Stockholm, Sweden

来源：

JOURNAL OF ELECTROCERAMICS | 2008年 / 21卷 / 1-4期

基金：

中国国家自然科学基金;

关键词：

Thermoelectric properties; SPS; Oxides;

D O I：

10.1007/s10832-007-9297-x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly densified (Ca1-xBix)(3)Co4O9 thermoelectric ceramics with a layered structure were prepared by a sol-gel method followed by spark plasma sintering (SPS). Thermoelectric (TE) properties of the complex oxide ceramics were measured from room temperature to 700 degrees C. The results show that Bi3+ substitution leads to an increase in both electrical conductivity and Seebeck coefficient simultaneously. Bi3+ doped samples also show a lower thermal conductivity than undoped samples. The dimensional figure of merit ZT value of (Ca-0.95 Bi-0.05)(3)Co4O9 samples is 0.25 at 700 degrees C.

引用

页码：748 / 751

页数：4

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