skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermoelectric properties of Zintl compound Ca 1-xNa xMg 2Bi 1.98

Abstract

Motivated by good thermoelectric performance of Bi-based Zintl compounds Ca 1-xYb xMg 2Bi y, we further studied the thermoelectric properties of Zintl compound CaMg 2Bi 1.98 by doping Na into Ca as Ca 1-xNa xMg 2Bi 1.98 via mechanical alloying and hot pressing. We found that the electrical conductivity, Seebeck coefficient, power factor, and carrier concentration can be effectively adjusted by tuning the Na concentration. Transport measurement and calculations revealed that an optimal doping of 0.5 at.% Na achieved better average ZT and efficiency. The enhancement in thermoelectric performance is attributed to the increased carrier concentration and power factor. Finally, the low cost and nontoxicity of Ca 1-xNa xMg 2Bi 1.98 makes it a potentially promising thermoelectric material for power generation in the mid-temperature range.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1]
  1. Univ. of Houston, Houston, TX (United States). Dept. of Physics and TcSUH
  2. Univ. of Houston, Houston, TX (United States). Dept. of Physics and TcSUH; Harbin Inst. of Technology, Harbin, Heilongjiang (China). National Key Lab. for Precision Hot Processing of Metals and School of Materials Science and Engineering
  3. Harbin Inst. of Technology, Harbin, Heilongjiang (China). National Key Lab. for Precision Hot Processing of Metals and School of Materials Science and Engineering
Publication Date:
Research Org.:
Univ. of Houston, Houston, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1471077
Alternate Identifier(s):
OSTI ID: 1250586
Grant/Contract Number:  
SC0010831; FG02-13ER46917
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 18; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION

Citation Formats

Shuai, Jing, Kim, Hee Seok, Liu, Zihang, He, Ran, Sui, Jiehe, and Ren, Zhifeng. Thermoelectric properties of Zintl compound Ca1-xNaxMg2Bi1.98. United States: N. p., 2016. Web. doi:10.1063/1.4948651.
Shuai, Jing, Kim, Hee Seok, Liu, Zihang, He, Ran, Sui, Jiehe, & Ren, Zhifeng. Thermoelectric properties of Zintl compound Ca1-xNaxMg2Bi1.98. United States. doi:10.1063/1.4948651.
Shuai, Jing, Kim, Hee Seok, Liu, Zihang, He, Ran, Sui, Jiehe, and Ren, Zhifeng. Tue . "Thermoelectric properties of Zintl compound Ca1-xNaxMg2Bi1.98". United States. doi:10.1063/1.4948651. https://www.osti.gov/servlets/purl/1471077.
@article{osti_1471077,
title = {Thermoelectric properties of Zintl compound Ca1-xNaxMg2Bi1.98},
author = {Shuai, Jing and Kim, Hee Seok and Liu, Zihang and He, Ran and Sui, Jiehe and Ren, Zhifeng},
abstractNote = {Motivated by good thermoelectric performance of Bi-based Zintl compounds Ca1-xYbxMg2Biy, we further studied the thermoelectric properties of Zintl compound CaMg2Bi1.98 by doping Na into Ca as Ca1-xNaxMg2Bi1.98 via mechanical alloying and hot pressing. We found that the electrical conductivity, Seebeck coefficient, power factor, and carrier concentration can be effectively adjusted by tuning the Na concentration. Transport measurement and calculations revealed that an optimal doping of 0.5 at.% Na achieved better average ZT and efficiency. The enhancement in thermoelectric performance is attributed to the increased carrier concentration and power factor. Finally, the low cost and nontoxicity of Ca1-xNaxMg2Bi1.98 makes it a potentially promising thermoelectric material for power generation in the mid-temperature range.},
doi = {10.1063/1.4948651},
journal = {Applied Physics Letters},
number = 18,
volume = 108,
place = {United States},
year = {2016},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Complex thermoelectric materials
journal, February 2008

  • Snyder, G. Jeffrey; Toberer, Eric S.
  • Nature Materials, Vol. 7, Issue 2, p. 105-114
  • DOI: 10.1038/nmat2090

Cooling, Heating, Generating Power, and Recovering Waste Heat with Thermoelectric Systems
journal, September 2008


Experimental Studies on Anisotropic Thermoelectric Properties and Structures of n-Type Bi2Te2.7Se0.3
journal, September 2010

  • Yan, Xiao; Poudel, Bed; Ma, Yi
  • Nano Letters, Vol. 10, Issue 9, p. 3373-3378
  • DOI: 10.1021/nl101156v

Thermoelectric Cooling and Power Generation
journal, July 1999


High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys
journal, May 2008