Title | Dramatic Enhancement of Thermoelectric Performance in PbTe by Unconventional Grain Shrinking in the Sintering Process |
Author | |
Corresponding Author | He, Jiaqing; Fu, Liangwei; Xu, Biao |
Publication Years | 2022-08-01
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DOI | |
Source Title | |
ISSN | 0935-9648
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EISSN | 1521-4095
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Abstract | Nanostructure engineering is a key strategy for tailoring properties in the fields of batteries, solar cells, thermoelectrics, and so on. Limited by grain coarsening, however, the nanostructure effect gradually degrades during the materials' manufacturing and in-service period. Herein, a strategy of cleavage-fracture for grain shrinking is developed in a Pb0.98Sb0.02Te sample during sintering, and the grain size remains stable after repeated tests. Moreover, the initial grain boundary is filled by fractured slender grains and enriched by dislocations, evolving into a hierarchical grain-boundary structure. The lattice thermal conductivity (k(lat)) is greatly reduced to approach the amorphous limit. As a result, a record-high ZT value of approximate to 1.9 is obtained at 815 K in the n-type Pb0.98Sb0.02Te sample and a decent efficiency of 6.7% in thermoelectric device. This strategy for grain shrinking will shed light on the application of nanostructure engineering under high temperature and extreme conditions in other material systems. |
Keywords | |
URL | [Source Record] |
Indexed By | |
Language | English
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Important Publications | NI Journal Papers
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SUSTech Authorship | Corresponding
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Funding Project | National Natural Science Foundation of China[
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WOS Research Area | Chemistry
; Science & Technology - Other Topics
; Materials Science
; Physics
|
WOS Subject | Chemistry, Multidisciplinary
; Chemistry, Physical
; Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
; Physics, Applied
; Physics, Condensed Matter
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WOS Accession No | WOS:000842176500001
|
Publisher | |
EI Accession Number | 20223412586408
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EI Keywords | Antimony Compounds
; Cell Engineering
; Coarsening
; Fracture
; IV-VI Semiconductors
; Lead Compounds
; Nanostructures
; Sintering
; Tellurium Compounds
; Thermal Conductivity
; Thermal Engineering
; Thermoelectricity
|
ESI Classification Code | Biomedical Engineering:461.1
; Thermodynamics:641.1
; Electricity: Basic Concepts And Phenomena:701.1
; Semiconducting Materials:712.1
; Nanotechnology:761
; Solid State Physics:933
; Materials Science:951
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ESI Research Field | MATERIALS SCIENCE
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Data Source | Web of Science
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Citation statistics |
Cited Times [WOS]:12
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Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/382565 |
Department | Department of Physics |
Affiliation | 1.Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Nanjing 210094, Peoples R China 2.Nanjing Univ, State Key Lab Coordinat Chem, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China 3.Southern Univ Sci & Technol, Dept Phys, Shenzhen Key Lab Thermoelect Mat, Shenzhen 518055, Peoples R China |
Corresponding Author Affilication | Department of Physics |
Recommended Citation GB/T 7714 |
Xu, Pengfei,Zhao, Wei,Liu, Xixi,et al. Dramatic Enhancement of Thermoelectric Performance in PbTe by Unconventional Grain Shrinking in the Sintering Process[J]. Advanced Materials,2022.
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APA |
Xu, Pengfei.,Zhao, Wei.,Liu, Xixi.,Jia, Baohai.,He, Jiaqing.,...&Xu, Biao.(2022).Dramatic Enhancement of Thermoelectric Performance in PbTe by Unconventional Grain Shrinking in the Sintering Process.Advanced Materials.
|
MLA |
Xu, Pengfei,et al."Dramatic Enhancement of Thermoelectric Performance in PbTe by Unconventional Grain Shrinking in the Sintering Process".Advanced Materials (2022).
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