Thermoelectric properties of yttrium-doped Mg3(Sb,Bi)2 synthesized by melting method

被引：14
|
作者：
Kihou, K. [1 ]
Kunioka, H. [1 ,2 ]
Nishiate, H. [1 ]
Lee, C. H. [1 ,2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
[2] Tokyo Univ Sci TUS, Dept Mat Sci & Technol, Tokyo 1258585, Japan
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 10卷
基金：
日本科学技术振兴机构;
关键词：
Thermoelectric material; Zintl phase; Mg deficiency; Melting method; P-TYPE MG3SB2; THERMAL-CONDUCTIVITY; DEFECT CHEMISTRY; ZINTL COMPOUNDS; PERFORMANCE; COMPOUND;
D O I：
10.1016/j.jmrt.2020.12.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A thermoelectric compound of n-type Mg3Sb2 is a promising candidate as an element of practical thermoelectric modules. We established a low-cost synthesis-procedure for Y-doped Mg-3(Sb,Bi)(2) that can be easily scaled up for mass production. Samples of Mg3+delta YxSb1.5Bi0.5 were synthesized via a melting method using a stainless-steel container for sealing the melt, and their thermoelectric properties depending on the Mg and Y concentrations were characterized. The highest dimensionless figure-of-merit (ZT) was obtained with the Mg3.3Y0.02Sb1.5Bi0.5 sample, which exhibited a value of ZT = 1.16 at T = 759 K. (C) 2020 The Authors. Published by Elsevier B.V.
引用
收藏
页码：438 / 444
页数：7
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