Improved thermoelectric performance of n-type Mg3Sb2-Mg3Bi2 alloy with Co element doping

被引：6

作者：

Chen, Yanqun ^{[1
,2
]}

Wang, Chao ^{[1
,2
]}

Ma, Zheng ^{[1
,2
]}

Li, Lanwei ^{[1
,2
]}

Li, Shuyao ^{[1
,2
]}

Wang, Jianli ^{[1
,2
]}

机构：

[1] Henan Univ, Sch Phys & Elect, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China

[2] Int Joint Res Lab New Energy Mat & Devices Henan, Kaifeng, Henan, Peoples R China

来源：

CURRENT APPLIED PHYSICS | 2021年 / 21卷

基金：

中国国家自然科学基金;

关键词：

n-type Mg3Sb2-Mg3Bi2 Alloy; Thermoelectric performance; Thermoelectric figure of merit; Point defect; Phonon scattering; High power factor; CARRIER SCATTERING MECHANISM; ZINTL COMPOUNDS; MG3SB2; BULK; ENHANCEMENT; EFFICIENCY; CHEMISTRY;

D O I：

10.1016/j.cap.2020.09.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

n-type Mg3Sb2-Mg3Bi2 alloy shows as a potential new thermoelectric material (TE) and has been widely researched recently. The pure phase n-type Mg-3.20(Sb0.3Bi0.7)(1.99)Te-0.01 were prepared by adjusting Mg content with the Bi impurity phase being effectively suppressed. Then, Co element was doped into the pure phase and the electrical conductivity of samples were improved. With a high power factor of 20.3 mu W cm(-1)K(-2) for Mg3.185Co0.015(Sb0.3Bi0.7)(1.99)Te-0.01 at 525 K. Additionally, it was found that the phonon scattering is enhanced due to the larger atomic mass of Co comparing to Mg and the lattice thermal conductivity is reduced. As a result, a high ZT value of similar to 1.03 at 525 K is achieved for the Mg3.185Co0.015(Sb0.3Bi0.7)(1.99)Te-0.01.

引用

页码：25 / 30

页数：6

共 41 条

[1] Structural and physical properties of Mg3-xZnxSb2 (x=0-1.34) [J].

Ahmadpour, Faraz ;

Kolodiazhnyi, Taras ;

Mozharivskyj, Yurij .

JOURNAL OF SOLID STATE CHEMISTRY, 2007, 180 (09) :2420-2428

[2]

[Anonymous], 1995, CRC HDB THERMOELECTR

[3] Synthesis and Characterization of Al-Doped Mg2Si Thermoelectric Materials [J].

Battiston, S. ;

Fiameni, S. ;

Saleemi, M. ;

Boldrini, S. ;

Famengo, A. ;

Agresti, F. ;

Stingaciu, M. ;

Toprak, M. S. ;

Fabrizio, M. ;

Barison, S. .

JOURNAL OF ELECTRONIC MATERIALS, 2013, 42 (07) :1956-1959

[4]

Bredt J., 1966, MAGNESIUM ANTIMONIDE

[5] Enhanced thermoelectric performance of p-type Mg3Sb2 by lithium doping and its tunability in an anionic framework [J].

Chen, Chen ;

Li, Xiaofang ;

Li, Shan ;

Wang, Xinyu ;

Zhang, Zongwei ;

Sui, Jiehe ;

Cao, Feng ;

Liu, Xingjun ;

Zhang, Qian .

JOURNAL OF MATERIALS SCIENCE, 2018, 53 (23) :16001-16009

[6] Extraordinary thermoelectric performance in n-type manganese doped Mg3Sb2 Zintl: High band degeneracy, tuned carrier scattering mechanism and hierarchical microstructure [J].

Chen, Xiaoxi ;

Wu, Haijun ;

Cui, Juan ;

Xiao, Yu ;

Zhang, Yang ;

He, Jiaqing ;

Chen, Yue ;

Cao, Jian ;

Cai, Wei ;

Pennycook, Stephen J. ;

Liu, Zihang ;

Zhao, Li-Dong ;

Sui, Jiehe .

NANO ENERGY, 2018, 52 :246-255

[7] Understanding the Intrinsic P-Type Behavior and Phase Stability of Thermoelectric α-Mg3Sb2 [J].

Chong, XiaoYu ;

Guan, Pin-Wen ;

Wang, Yi ;

Shang, Shun-Li ;

Palma, Jorge Paz Soldan ;

Drymiotis, Fivos ;

Ravi, Vilupanur A. ;

Star, Kurt E. ;

Fleurial, Jean-Pierre ;

Liu, Zi-Kui .

ACS APPLIED ENERGY MATERIALS, 2018, 1 (11) :6600-6608

[8] Thermoelectric properties and microstructure of Mg3Sb2 [J].

Condron, Cathie L. ;

Kauzlarich, Susan M. ;

Gascoin, Franck ;

Snyder, G. Jeffrey .

JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (08) :2252-2257

[9] Thermoelectric properties of Ag-doped compound: Mg3-xAgxSb2 [J].

Fu, Yanan ;

Zhang, Xin ;

Liu, Hongliang ;

Tian, Jie ;

Zhang, Jiuxing .

JOURNAL OF MATERIOMICS, 2018, 4 (01) :75-79

[10] THE USE OF SEMICONDUCTORS IN THERMOELECTRIC REFRIGERATION [J].

GOLDSMID, HJ ;

DOUGLAS, RW .

BRITISH JOURNAL OF APPLIED PHYSICS, 1954, 5 (NOV) :386-390

← 1 2 3 4 5 →