Improvement of thermoelectric properties of WO3 ceramics by NiO addition

被引：0
|
作者：
Xiang Dong
Yingjie Gan
Liang Dong
Shujie Peng
Yu Wang
机构：
[1] Southwest Jiaotong University,School of Electrical Engineering
[2] Southwest Jiaotong University,School of Material Science and Engineering
来源：
Journal of Materials Science: Materials in Electronics | 2013年 / 24卷
关键词：
SnO2; CeO2; Power Factor; Thermoelectric Property; PbTe;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The thermoelectric properties of tungsten trioxide (WO3) ceramics doped with nickel oxide (NiO) were investigated from 323 up to 1,023 K. The results revealed that doping WO3 with NiO could promote the grain growth and the density. There was a second phase (NiWO4) segregation at the grain boundaries in the samples containing more than 1.0 mol% NiO, which inhibited the further grain growth. The magnitude of the electrical conductivity (σ) and the absolute value of the Seebeck coefficient (|S|) depended strongly on the NiO content. As for the power factor (σS2), the 1.0 mol% sample has the maximum value of the power factor which is 0.55 μW m−1 K−2 at 1,023 K.
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页码：4316 / 4320
页数：4
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