Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2

Mg3Sb2-based thermoelectric materials have poor electrical conductivity which is the key to limit thermoelectric performance that need to be solved. Herein we tuned the carrier concentration of Mg3Sb2-based materials via Ag doping at the Mg sites (at two distinct crystallographic sites) to enhance t...

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Main Authors: Yanan Fu, Xin Zhang, Hongliang Liu, Jie Tian, Jiuxing Zhang
Format: Article
Language:English
Published: Elsevier 2018-03-01
Series:Journal of Materiomics
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2352847817300850
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spelling doaj-f31761d48ff846d59cbf90e57e1e379f2020-11-24T20:59:07ZengElsevierJournal of Materiomics2352-84782018-03-0141757910.1016/j.jmat.2017.12.002Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2Yanan Fu0Xin Zhang1Hongliang Liu2Jie Tian3Jiuxing Zhang4College of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing 100124, ChinaMg3Sb2-based thermoelectric materials have poor electrical conductivity which is the key to limit thermoelectric performance that need to be solved. Herein we tuned the carrier concentration of Mg3Sb2-based materials via Ag doping at the Mg sites (at two distinct crystallographic sites) to enhance the electrical performance. Mg3-xAgxSb2 (0 ≤ x ≤ 0.05) has been prepared successfully by vacuum suspension smelting plus Spark Plasma Sintering technique. Using the vacuum suspension smelting plus Spark Plasma Sintering method, we proved that Ag doping can precisely tune the electrical transport properties and accordingly enhance the power factor. Moreover, the Ag doping leads to a low lattice thermal conductivity due to phonons scattering, and the maximal thermoelectric figure of merit ZT for Mg2.96Ag0.04Sb2 reaches 0.66 at 773 K.http://www.sciencedirect.com/science/article/pii/S2352847817300850Mg3Sb2Thermoelectric performanceVacuum suspension smeltingSintering
collection DOAJ
language English
format Article
sources DOAJ
author Yanan Fu
Xin Zhang
Hongliang Liu
Jie Tian
Jiuxing Zhang
spellingShingle Yanan Fu
Xin Zhang
Hongliang Liu
Jie Tian
Jiuxing Zhang
Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
Journal of Materiomics
Mg3Sb2
Thermoelectric performance
Vacuum suspension smelting
Sintering
author_facet Yanan Fu
Xin Zhang
Hongliang Liu
Jie Tian
Jiuxing Zhang
author_sort Yanan Fu
title Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
title_short Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
title_full Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
title_fullStr Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
title_full_unstemmed Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2
title_sort thermoelectric properties of ag-doped compound: mg3-xagxsb2
publisher Elsevier
series Journal of Materiomics
issn 2352-8478
publishDate 2018-03-01
description Mg3Sb2-based thermoelectric materials have poor electrical conductivity which is the key to limit thermoelectric performance that need to be solved. Herein we tuned the carrier concentration of Mg3Sb2-based materials via Ag doping at the Mg sites (at two distinct crystallographic sites) to enhance the electrical performance. Mg3-xAgxSb2 (0 ≤ x ≤ 0.05) has been prepared successfully by vacuum suspension smelting plus Spark Plasma Sintering technique. Using the vacuum suspension smelting plus Spark Plasma Sintering method, we proved that Ag doping can precisely tune the electrical transport properties and accordingly enhance the power factor. Moreover, the Ag doping leads to a low lattice thermal conductivity due to phonons scattering, and the maximal thermoelectric figure of merit ZT for Mg2.96Ag0.04Sb2 reaches 0.66 at 773 K.
topic Mg3Sb2
Thermoelectric performance
Vacuum suspension smelting
Sintering
url http://www.sciencedirect.com/science/article/pii/S2352847817300850
work_keys_str_mv AT yananfu thermoelectricpropertiesofagdopedcompoundmg3xagxsb2
AT xinzhang thermoelectricpropertiesofagdopedcompoundmg3xagxsb2
AT hongliangliu thermoelectricpropertiesofagdopedcompoundmg3xagxsb2
AT jietian thermoelectricpropertiesofagdopedcompoundmg3xagxsb2
AT jiuxingzhang thermoelectricpropertiesofagdopedcompoundmg3xagxsb2
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