Synthesis and Thermoelectric Properties of Pd-Doped ZrCoBi Half-Heusler Compounds

被引：25

作者：

Zhao, Degang ^{[1
]}

Zuo, Min ^{[1
]}

Bo, Lin ^{[1
]}

Wang, Yongpeng ^{[1
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China

来源：

MATERIALS | 2018年 / 11卷 / 05期

关键词：

ZrCoBi; half-Heusler; Pd/Co substitution; thermoelectrics; RECENT PROGRESS; PERFORMANCE; ZR; HF;

D O I：

10.3390/ma11050728

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, n-type Pd-doped ZrCo1-xPdxBi (x = 0, 0.03, 0.06, 0.09) half-Heusler samples were prepared by arc-melting and rapid hot-pressing sintering. The thermoelectric properties of ZrCo1-xPdxBi samples were analyzed and discussed. The results showed that the electrical properties of ZrCo1-xPdxBi, including electrical conductivity and the Seebeck coefficient, increase due to the substitution of Pd on Co site. The lattice thermal conductivity of ZrCo1-xPdxBi is markedly decreased because of the Pd/Co substitution. A minimum k(L) of 5.0 W/mK for ZrCo0.91Pd0.09Bi is achieved at 800 K. The figure of merit of ZrCo1-xPdxBi is boosted due to the depressed lattice thermal conductivity and the improved power factor. The highest value of figure of merit reaches 0.23 for ZrCo0.97Pd0.03Bi half-Heusler compound at 800 K.

引用

页数：9

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