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

Zhihao Lou; Ping Zhang; Jiatong Zhu; Lingyun Gong; Jie Xu; Qian Chen; Michael J. Reece; Haixue Yan; Feng Gao

doi:10.1016/j.jeurceramsoc.2022.02.053

A novel high-entropy perovskite ceramics Sr_0.9La_0.1(Zr_0.25Sn_0.25Ti_0.25Hf_0.25)O₃ with low thermal conductivity and high Seebeck coefficient

Zhihao Lou, Ping Zhang, Jiatong Zhu, Lingyun Gong, Jie Xu, Qian Chen, Michael J. Reece, Haixue Yan, Feng Gao

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

Abstract

In this work, a novel high-entropy n-type thermoelectric material Sr_0.9La_0.1(Zr_0.25Sn_0.25Ti_0.25Hf_0.25)O₃ 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 μV/K). This work highlights a way to obtain high-performance perovskite-type oxide thermoelectric materials through high-entropy composition design.

Original language	English
Pages (from-to)	3480-3488
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	42
Issue number	8
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2022.02.053
State	Published - Jul 2022

Keywords

High-entropy ceramics
Perovskite phase
Seebeck coefficient
Thermal conductivity
Thermoelectric

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10.1016/j.jeurceramsoc.2022.02.053

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

abstract = "In this work, a novel high-entropy n-type thermoelectric material Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25)O3 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 μV/K). This work highlights a way to obtain high-performance perovskite-type oxide thermoelectric materials through high-entropy composition design.",

keywords = "High-entropy ceramics, Perovskite phase, Seebeck coefficient, Thermal conductivity, Thermoelectric",

author = "Zhihao Lou and Ping Zhang and Jiatong Zhu and Lingyun Gong and Jie Xu and Qian Chen and Reece, {Michael J.} and Haixue Yan and Feng Gao",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.jeurceramsoc.2022.02.053",

language = "英语",

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TY - JOUR

T1 - A novel high-entropy perovskite ceramics Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25)O3 with low thermal conductivity and high Seebeck coefficient

AU - Lou, Zhihao

AU - Zhang, Ping

AU - Zhu, Jiatong

AU - Gong, Lingyun

AU - Xu, Jie

AU - Chen, Qian

AU - Reece, Michael J.

AU - Yan, Haixue

AU - Gao, Feng

PY - 2022/7

Y1 - 2022/7

N2 - In this work, a novel high-entropy n-type thermoelectric material Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25)O3 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 μV/K). This work highlights a way to obtain high-performance perovskite-type oxide thermoelectric materials through high-entropy composition design.

AB - In this work, a novel high-entropy n-type thermoelectric material Sr0.9La0.1(Zr0.25Sn0.25Ti0.25Hf0.25)O3 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 μV/K). This work highlights a way to obtain high-performance perovskite-type oxide thermoelectric materials through high-entropy composition design.

KW - High-entropy ceramics

KW - Perovskite phase

KW - Seebeck coefficient

KW - Thermal conductivity

KW - Thermoelectric

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U2 - 10.1016/j.jeurceramsoc.2022.02.053

DO - 10.1016/j.jeurceramsoc.2022.02.053

M3 - 文章

AN - SCOPUS:85125697140

SN - 0955-2219

VL - 42

SP - 3480

EP - 3488

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 8

ER -

A novel high-entropy perovskite ceramics Sr_0.9La_0.1(Zr_0.25Sn_0.25Ti_0.25Hf_0.25)O₃ with low thermal conductivity and high Seebeck coefficient

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