Discovery of TaFeSb-based half-Heuslers with high thermoelectric performance
Name
s41467-018-08223-5.pdf
Description
Published version
Size
1.1 MB
Format
Adobe PDF
Checksum (MD5)
76cf66c412a5a664df55d539a62a1924
Author(s)
Song, Qichen
Zhou, Jiawei
Chen, Gang
Date Issued
January 17, 2019
Journal
Nature communications
Publisher
Springer Science and Business Media LLC
Citation
Zhu, Hangtian et al. "Discovery of TaFeSb-based half-Heuslers with high thermoelectric performance." Nature communications 10 (2019): 1038 © 2019 The Author(s)
Version
Final published version
Abstract
Discovery of thermoelectric materials has long been realized by the Edisonian trial and error approach. However, recent progress in theoretical calculations, including the ability to predict structures of unknown phases along with their thermodynamic stability and functional properties, has enabled the so-called inverse design approach. Compared to the traditional materials discovery, the inverse design approach has the potential to substantially reduce the experimental efforts needed to identify promising compounds with target functionalities. By adopting this approach, here we have discovered several unreported half-Heusler compounds. Among them, the p-type TaFeSb-based half-Heusler demonstrates a record high ZT of ~1.52 at 973 K. Additionally, an ultrahigh average ZT of ~0.93 between 300 and 973 K is achieved. Such an extraordinary thermoelectric performance is further verified by the heat-to-electricity conversion efficiency measurement and a high efficiency of ~11.4% is obtained. Our work demonstrates that the TaFeSb-based half-Heuslers are highly promising for thermoelectric power generation.
Subjects
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
General Chemistry
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-018-08223-5
