Effect of CeO2 on the thermoelectric properties of WO3-based ceramics

Effect of CeO2 on the thermoelectric properties of WO3-based ceramics
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CeO2对WO3基陶瓷热电性能的影响

DOI:
10.1016/j.ceramint.2011.08.041
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发表时间:
2012-03
影响因子:
5.2
通讯作者:
H.Wang, Z.Hua, S.Peng, X.Dong,L.Dong,Yu Wang
H.Wang, Z.Hua, S.Peng, X.Dong,L.Dong,Yu Wang
中科院分区:
材料科学1区
文献类型:
--
作者:
H.Wang, Z.Hua, S.Peng, X.Dong,L.Dong,Yu Wang

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研究了CeO2掺杂三氧化钨(WO_3)陶瓷的热电性能。结果表明,CeO_2的加入可以促进WO_3的晶粒长大和致密化。电导率(σ)的大小和塞贝克系数的绝对值(|S|)强烈依赖于CeO2的含量。掺杂2.0mol%CeO2的样品产生了较高的σ和|S|,导致功率因数(σS2)显著增加。此外,所有样品的功率因子值在高温下都突然增加,这表明WO_3基陶瓷在高温下可以具有更好的热电性能。
The thermoelectric properties of tungsten trioxide (WO3) ceramics doped with cerium dioxide (CeO2) were investigated. The results demonstrated that the addition of CeO2to WO3could promote the grain growth and the densification. The magnitude of the electrical conductivity (σ) and the absolute value of the Seebeck coefficient (|s|) depended strongly on the CeO2content. The sample doped with 2.0mol% CeO2yielded higher σ and |s|, resulting in a significant increase in the power factor (σs2). In addition, the power factor value of all samples increased abruptly at high temperatures, which revealed that WO3-based ceramics could have greater thermoelectric properties at high temperatures.
DOI: 10.1103/physrevb.56.r12685
发表时间: 1997-11-15
期刊: PHYSICAL REVIEW B
影响因子: 3.7
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