|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications X
||Development of n-type Mg3Sb2-Mg3Bi2 Alloys for Thermoelectrics
||Kazuki Imasato, Michihiro Ohta, G. Jeffrey Snyder
|On-Site Speaker (Planned)
There has been significant interest in Mg3(Sb,Bi)2 since the demonstration of high zT in the n-type materials. In this talk, I will present the strategies to achieve a high thermoelectric performance of Mg3Sb2-Mg3Bi2. The thermoelectric performance of n-type Mg3Sb2-Mg3Bi2 alloys was systematically investigated and significantly improved with thorough experimental characterization of the effects of defects, composition, microstructure, and electronic band structure. The main mechanisms of the improvement are optimization of the band structure and microstructure. These results were compiled to establish foundational methodologies to optimize this material system. The understanding of these mechanisms is crucial to the cooling and wasted heat recovery applications. Considering the limited number of state-of-art n-type thermoelectric materials for the low-grade heat recovery and cooling technology, the further development of Mg3Sb2-Mg3Bi2 alloys is a significant step towards the commercial application of thermoelectric materials.
||Magnesium, Characterization, Electronic Materials