Utilizing the phonon glass electron crystal concept to improve the thermoelectric properties of combined Yb-stuffed and Te-substituted CoSb3

被引：16

作者：

Khaliq, Jibran ^{[1
]}

Jiang, Qinghui ^{[1
]}

Yang, Junyou ^{[2
]}

Simpson, Kevin ^{[3
]}

Yan, Haixue ^{[1
,4
]}

Reece, Michael J. ^{[1
,4
]}

机构：

[1] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

[2] Huazhong Univ Sci & Technol, State Key Lab Mat Proc Die & Mould Technol, Wuhan 430074, Peoples R China

[3] European Thermodynam Ltd, Leicester LE8 0RX, Leics, England

[4] Nanoforce Technol Ltd, London E1 4NS, England

来源：

SCRIPTA MATERIALIA | 2014年 / 72-73卷

关键词：

CoSb3; Thermoelectric material; Mechanical alloying; Rare earth stuffing; Thermal conductivity; FILLED SKUTTERUDITE ANTIMONIDES; TRANSPORT-PROPERTIES; CONDUCTIVITY; PERFORMANCE;

D O I：

10.1016/j.scriptamat.2013.10.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A cost-effective and rapid mechanical alloying method was used to prepare Yb-stuffed and Te-substituted CoSb3 to study the thermoelectric properties of this material. Yb rattles inside the cage-like structure of CoSb3 which effectively reduces the phonon mean free path and results in a lattice thermal conductivity comparable to those of costly nanostructured CoSb3 materials. A very low lattice thermal conductivity of 1.17 W m(-1) K-1 at similar to 550 K was obtained. A zT value of similar to 0.7 was reported at 600 K due to the very low lattice thermal conductivity. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：63 / 66

页数：4

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