Understanding the High Thermoelectric Performance of Mg3Sb2-Mg3Bi2 Alloys

Kazuki Imasato*, Maxwell Wood, Shashwat Anand, Jimmy Jiahong Kuo, G. Jeffrey Snyder

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

17 Scopus citations


n-Type Mg3Sb2-Mg3Bi2 alloys are some of the most promising thermoelectric materials in the low–mid temperature range. While discovered relatively recently, these materials have garnered intense attention, and numerous papers from the international thermoelectric community have been published in a relatively short period of time. As with all materials, detailed insights into the underlying mechanisms that contribute to these alloys’ distinguished thermoelectric properties are important for future researchers to push the performance of this material to new heights. Herein, experimental studies on the role defects, synthesis conditions, electronic band structure, and microstructure along with future prospects arecompiled to establish a guide for fully exploiting the potential of this material system. Considering the limited number of n-type thermoelectric materials with this performance for low-grade heat recovery and cooling technologies, further development of the Mg3Sb2-Mg3Bi2 alloys is an important step toward commercial applications of thermoelectric materials, including cooling technologies and waste heat recovery applications.

Original languageEnglish (US)
Article number2100208
JournalAdvanced Energy and Sustainability Research
Issue number6
StatePublished - Jun 2022


  • band engineering
  • defects
  • microstructures
  • synthesis
  • thermoelectrics

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ecology
  • Waste Management and Disposal
  • Environmental Science (miscellaneous)


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