Thermoelectric properties of Na-doped Zintl compound: Mg3-xNaxSb2

Jing Shuai; Yumei Wang; Hee Seok Kim; Zihang Liu; Jingying Sun; Shuo Chen; Jiehe Sui; Zhifeng Ren

doi:10.1016/j.actamat.2015.04.023

Thermoelectric properties of Na-doped Zintl compound: Mg_3-xNa_xSb₂

Jing Shuai
, Yumei Wang
, Hee Seok Kim
, Zihang Liu
, Jingying Sun
, Shuo Chen
, Jiehe Sui^*
, Zhifeng Ren

^*Corresponding author for this work

University of Houston
CAS - Institute of Physics
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

167 Scopus citations

Abstract

Mg_3-_xNa_xSb₂ has been prepared successfully by mechanical alloying plus hot pressing to investigate the effects of Na doping on the thermoelectric properties. Thermoelectric properties were characterized by the Seebeck coefficient, electrical resistivity, thermal conductivity, and thermoelectric figure of merit (ZT) from 298 to 773 K. Transport measurements reveal that an optimum doping of 1.25 at.% Na on Mg achieved ZT of 0.6 at 773 K. The enhancement in ZT is attributed to increased carrier concentration and power factor. The low cost, abundance, and nontoxicity makes this material a potentially promising thermoelectric material for power generation at a heat source below 773 K.

Original language	English
Article number	12090
Pages (from-to)	187-193
Number of pages	7
Journal	Acta Materialia
Volume	93
DOIs	https://doi.org/10.1016/j.actamat.2015.04.023
State	Published - 1 Apr 2015
Externally published	Yes

Keywords

Engineering figure-of-merit
MgSb alloy
Nanostructure
Thermoelectric properties

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10.1016/j.actamat.2015.04.023

Cite this

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title = "Thermoelectric properties of Na-doped Zintl compound: Mg3-xNaxSb2",

abstract = "Mg3-xNaxSb2 has been prepared successfully by mechanical alloying plus hot pressing to investigate the effects of Na doping on the thermoelectric properties. Thermoelectric properties were characterized by the Seebeck coefficient, electrical resistivity, thermal conductivity, and thermoelectric figure of merit (ZT) from 298 to 773 K. Transport measurements reveal that an optimum doping of 1.25 at.\% Na on Mg achieved ZT of 0.6 at 773 K. The enhancement in ZT is attributed to increased carrier concentration and power factor. The low cost, abundance, and nontoxicity makes this material a potentially promising thermoelectric material for power generation at a heat source below 773 K.",

keywords = "Engineering figure-of-merit, MgSb alloy, Nanostructure, Thermoelectric properties",

author = "Jing Shuai and Yumei Wang and Kim, \{Hee Seok\} and Zihang Liu and Jingying Sun and Shuo Chen and Jiehe Sui and Zhifeng Ren",

note = "Publisher Copyright: {\textcopyright} 2015 Acta Materialia Inc.",

year = "2015",

month = apr,

day = "1",

doi = "10.1016/j.actamat.2015.04.023",

language = "英语",

volume = "93",

pages = "187--193",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Thermoelectric properties of Na-doped Zintl compound

T2 - Mg3-xNaxSb2

AU - Shuai, Jing

AU - Wang, Yumei

AU - Kim, Hee Seok

AU - Liu, Zihang

AU - Sun, Jingying

AU - Chen, Shuo

AU - Sui, Jiehe

AU - Ren, Zhifeng

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Mg3-xNaxSb2 has been prepared successfully by mechanical alloying plus hot pressing to investigate the effects of Na doping on the thermoelectric properties. Thermoelectric properties were characterized by the Seebeck coefficient, electrical resistivity, thermal conductivity, and thermoelectric figure of merit (ZT) from 298 to 773 K. Transport measurements reveal that an optimum doping of 1.25 at.% Na on Mg achieved ZT of 0.6 at 773 K. The enhancement in ZT is attributed to increased carrier concentration and power factor. The low cost, abundance, and nontoxicity makes this material a potentially promising thermoelectric material for power generation at a heat source below 773 K.

AB - Mg3-xNaxSb2 has been prepared successfully by mechanical alloying plus hot pressing to investigate the effects of Na doping on the thermoelectric properties. Thermoelectric properties were characterized by the Seebeck coefficient, electrical resistivity, thermal conductivity, and thermoelectric figure of merit (ZT) from 298 to 773 K. Transport measurements reveal that an optimum doping of 1.25 at.% Na on Mg achieved ZT of 0.6 at 773 K. The enhancement in ZT is attributed to increased carrier concentration and power factor. The low cost, abundance, and nontoxicity makes this material a potentially promising thermoelectric material for power generation at a heat source below 773 K.

KW - Engineering figure-of-merit

KW - MgSb alloy

KW - Nanostructure

KW - Thermoelectric properties

UR - https://www.scopus.com/pages/publications/84929071724

U2 - 10.1016/j.actamat.2015.04.023

DO - 10.1016/j.actamat.2015.04.023

M3 - 文章

AN - SCOPUS:84929071724

SN - 1359-6454

VL - 93

SP - 187

EP - 193

JO - Acta Materialia

JF - Acta Materialia

M1 - 12090

ER -

Thermoelectric properties of Na-doped Zintl compound: Mg_3-xNa_xSb₂

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Keywords

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