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

Khaliq, Jibran, Jiang, Qinghui, Yang, Junyou, Simpson, Kevin, Yan, Haixue and Reece, Michael (2014) Utilizing the phonon glass electron crystal concept to improve the thermoelectric properties of combined Yb-stuffed and Te-substituted CoSb3. Scripta Materialia, 72 (Supple). 63 - 66. ISSN 1359-6462

Full text not available from this repository.

Abstract

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 ∼550 K was obtained. A zT value of ∼0.7 was reported at 600 K due to the very low lattice thermal conductivity.

Item Type:	Article
Uncontrolled Keywords:	thermal conductivity, CoSb3, thermoelectric material, mechanical alloying, rare earth stuffing,
Subjects:	F100 Chemistry F200 Materials Science F300 Physics H100 General Engineering J100 Minerals Technology J300 Ceramics and Glasses
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Dr Jibran Khaliq
Date Deposited:	25 Sep 2017 09:27
Last Modified:	12 Oct 2019 20:41
URI:	http://nrl.northumbria.ac.uk/id/eprint/31952

Downloads