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

Northwestern Polytechnical University Xian
Queen Mary University of London

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

100 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",

month = jul,

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

language = "英语",

volume = "42",

pages = "3480--3488",

journal = "Journal of the European Ceramic Society",

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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

UR - https://www.scopus.com/pages/publications/85125697140

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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Keywords

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