A novel high-entropy perovskite ceramics Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25) O3 with low thermal conductivity and high Seebeck coefficient

被引：72
|
作者：
Lou, Zhihao [1 ]
Zhang, Ping [1 ]
Zhu, Jiatong [1 ]
Gong, Lingyun [1 ]
Xu, Jie [1 ,3 ]
Chen, Qian [1 ,3 ]
Reece, Michael J. [2 ,3 ]
Yan, Haixue [2 ,3 ]
Gao, Feng [1 ,3 ]
机构：
[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, MIIT Key Lab Radiat Detect Mat & Devices, Xian 710072, Peoples R China
[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England
[3] Northwestern Polytech Univ, NPU QMUL Joint Res Inst Adv Mat & Struct, Xian 710072, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2022年 / 42卷 / 08期
基金：
中国国家自然科学基金;
关键词：
High-entropy ceramics; Perovskite phase; Thermoelectric; Thermal conductivity; Seebeck coefficient; THERMOELECTRIC PROPERTIES; OXIDES; FABRICATION; LA;
D O I：
10.1016/j.jeurceramsoc.2022.02.053
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this work, a novel high-entropy n-type thermoelectric material Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25)O-3 with pure perovskite phase was prepared using a conventional solid state processing route. The results of TEM and XPS show that various types of crystal defects and lattice distortions, such as oxygen vacancies, edge dislocations, in phase rotations of octahedron and antiparallel cation displacements coexist in this high-entropy ceramic. At 873 K, the high-entropy ceramics showed both a low thermal conductivity (1.89 W/m/K) and a high Seebeck coefficient (393 mu V/K). This work highlights a way to obtain high-performance perovskite-type oxide thermoelectric materials through high-entropy composition design.
引用
收藏
页码：3480 / 3488
页数：9
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