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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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 |
_version_ |
1716783684202266624 |