中文版 | English
Title

High-entropy-stabilized chalcogenides with high thermoelectric performance

Author
Corresponding AuthorHe, Jiaqing
Publication Years
2021-02-19
DOI
Source Title
ISSN
0036-8075
EISSN
1095-9203
Volume371Issue:6531
Abstract
Thermoelectric technology generates electricity from waste heat, but one bottleneck for wider use is the performance of thermoelectric materials. Manipulating the configurational entropy of a material by introducing different atomic species can tune phase composition and extend the performance optimization space. We enhanced the figure of merit (zT) value to 1.8 at 900 kelvin in an n-type PbSe-based high-entropy material formed by entropy-driven structural stabilization. The largely distorted lattices in this high-entropy system caused unusual shear strains, which provided strong phonon scattering to largely lower lattice thermal conductivity. The thermoelectric conversion efficiency was 12.3% at temperature difference Delta T = 507 kelvin, for the fabricated segmented module based on this n-type high-entropy material. Our demonstration provides a paradigm to improve thermoelectric performance for high-entropy thermoelectric materials through entropy engineering.
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
Funding Project
leading talents of the Guangdong Province Program[00201517] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001] ; National Natural Science Foundation of China[51632010,52002167,11874194,11934007,51632005] ; Science and Technology Innovation Committee Foundation of Shenzhen["KQTD2016022619565991","ZDSYS20141118160434515"] ; high level of special funds[G02206302]
WOS Research Area
Science & Technology - Other Topics
WOS Subject
Multidisciplinary Sciences
WOS Accession No
WOS:000619664700053
Publisher
ESI Research Field
MULTIDISCIPLINARY
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:72
Document TypeJournal Article
Identifierhttps://kc.sustech.edu.cn/handle/2SGJ60CL/221332
DepartmentDepartment of Physics
Affiliation
1.Southern Univ Sci & Technol, Dept Phys, Shenzhen Key Lab Thermoelect Mat, Shenzhen 518055, Peoples R China
2.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore
3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Hong Kong Macao Joint Lab Photon Therma, Shenzhen 518055, Peoples R China
First Author AffilicationDepartment of Physics
Corresponding Author AffilicationDepartment of Physics;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Physics
Recommended Citation
GB/T 7714
Jiang, Binbin,Yu, Yong,Cui, Juan,et al. High-entropy-stabilized chalcogenides with high thermoelectric performance[J]. SCIENCE,2021,371(6531).
APA
Jiang, Binbin.,Yu, Yong.,Cui, Juan.,Liu, Xixi.,Xie, Lin.,...&He, Jiaqing.(2021).High-entropy-stabilized chalcogenides with high thermoelectric performance.SCIENCE,371(6531).
MLA
Jiang, Binbin,et al."High-entropy-stabilized chalcogenides with high thermoelectric performance".SCIENCE 371.6531(2021).
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