High-entropy (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 perovskite ceramics with A-site short-range disorder for thermoelectric applications

Ping Zhang; Zhihao Lou; Mengjie Qin; Jie Xu; Jiatong Zhu; Zongmo Shi; Qian Chen; Michael J. Reece; Haixue Yan; Feng Gao

doi:10.1016/j.jmst.2021.05.016

High-entropy (Ca_0.2Sr_0.2Ba_0.2La_0.2Pb_0.2)TiO₃ perovskite ceramics with A-site short-range disorder for thermoelectric applications

Ping Zhang
, Zhihao Lou
, Mengjie Qin
, Jie Xu
, Jiatong Zhu
, Zongmo Shi
, 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

150 Scopus citations

Abstract

Novel high-entropy perovskite-type (Ca_0.2Sr_0.2Ba_0.2La_0.2Pb_0.2)TiO₃ (CSBLP) ceramics with cubic structure of Pm-3m space group were successful prepared by solid-state reaction method. Results of XRD, SEM-EDS, HRTEM confirmed a homogeneous distribution and equimolar arrangement of multicomponent cations on the A-site. The high-entropy CSBLP ceramics showed long-range structural order and short-range chemical disorder with widely dispersed nanoscale grains varying sizes of 4-6 nm in the microstructure. Because of increased configurational entropy, the CSBLP ceramic has an enhanced Seebeck coefficient (|S|=272 μV/K at 1073 K) and low thermal conductivity (κ=1.75 W/m•K at 1073 K) when annealed at 1300 °C. This work demonstrates the possibility of effectively reducing thermal conductivity and improving the performance of thermoelectric oxides through high-entropy composition design.

Original language	English
Pages (from-to)	182-189
Number of pages	8
Journal	Journal of Materials Science and Technology
Volume	97
DOIs	https://doi.org/10.1016/j.jmst.2021.05.016
State	Published - 20 Jan 2022

Keywords

Disorder
High-entropy ceramics
Thermal conductivity
Thermoelectric materials

Access to Document

10.1016/j.jmst.2021.05.016

Cite this

@article{eeeb1f0d52ed4ff08e86c61c4085695c,

title = "High-entropy (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 perovskite ceramics with A-site short-range disorder for thermoelectric applications",

abstract = "Novel high-entropy perovskite-type (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 (CSBLP) ceramics with cubic structure of Pm-3m space group were successful prepared by solid-state reaction method. Results of XRD, SEM-EDS, HRTEM confirmed a homogeneous distribution and equimolar arrangement of multicomponent cations on the A-site. The high-entropy CSBLP ceramics showed long-range structural order and short-range chemical disorder with widely dispersed nanoscale grains varying sizes of 4-6 nm in the microstructure. Because of increased configurational entropy, the CSBLP ceramic has an enhanced Seebeck coefficient (|S|=272 μV/K at 1073 K) and low thermal conductivity (κ=1.75 W/m•K at 1073 K) when annealed at 1300 °C. This work demonstrates the possibility of effectively reducing thermal conductivity and improving the performance of thermoelectric oxides through high-entropy composition design.",

keywords = "Disorder, High-entropy ceramics, Thermal conductivity, Thermoelectric materials",

author = "Ping Zhang and Zhihao Lou and Mengjie Qin and Jie Xu and Jiatong Zhu and Zongmo Shi and Qian Chen and Reece, \{Michael J.\} and Haixue Yan and Feng Gao",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = jan,

day = "20",

doi = "10.1016/j.jmst.2021.05.016",

language = "英语",

volume = "97",

pages = "182--189",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

}

TY - JOUR

T1 - High-entropy (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 perovskite ceramics with A-site short-range disorder for thermoelectric applications

AU - Zhang, Ping

AU - Lou, Zhihao

AU - Qin, Mengjie

AU - Xu, Jie

AU - Zhu, Jiatong

AU - Shi, Zongmo

AU - Chen, Qian

AU - Reece, Michael J.

AU - Yan, Haixue

AU - Gao, Feng

PY - 2022/1/20

Y1 - 2022/1/20

N2 - Novel high-entropy perovskite-type (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 (CSBLP) ceramics with cubic structure of Pm-3m space group were successful prepared by solid-state reaction method. Results of XRD, SEM-EDS, HRTEM confirmed a homogeneous distribution and equimolar arrangement of multicomponent cations on the A-site. The high-entropy CSBLP ceramics showed long-range structural order and short-range chemical disorder with widely dispersed nanoscale grains varying sizes of 4-6 nm in the microstructure. Because of increased configurational entropy, the CSBLP ceramic has an enhanced Seebeck coefficient (|S|=272 μV/K at 1073 K) and low thermal conductivity (κ=1.75 W/m•K at 1073 K) when annealed at 1300 °C. This work demonstrates the possibility of effectively reducing thermal conductivity and improving the performance of thermoelectric oxides through high-entropy composition design.

AB - Novel high-entropy perovskite-type (Ca0.2Sr0.2Ba0.2La0.2Pb0.2)TiO3 (CSBLP) ceramics with cubic structure of Pm-3m space group were successful prepared by solid-state reaction method. Results of XRD, SEM-EDS, HRTEM confirmed a homogeneous distribution and equimolar arrangement of multicomponent cations on the A-site. The high-entropy CSBLP ceramics showed long-range structural order and short-range chemical disorder with widely dispersed nanoscale grains varying sizes of 4-6 nm in the microstructure. Because of increased configurational entropy, the CSBLP ceramic has an enhanced Seebeck coefficient (|S|=272 μV/K at 1073 K) and low thermal conductivity (κ=1.75 W/m•K at 1073 K) when annealed at 1300 °C. This work demonstrates the possibility of effectively reducing thermal conductivity and improving the performance of thermoelectric oxides through high-entropy composition design.

KW - Disorder

KW - High-entropy ceramics

KW - Thermal conductivity

KW - Thermoelectric materials

UR - https://www.scopus.com/pages/publications/85110232736

U2 - 10.1016/j.jmst.2021.05.016

DO - 10.1016/j.jmst.2021.05.016

M3 - 文章

AN - SCOPUS:85110232736

SN - 1005-0302

VL - 97

SP - 182

EP - 189

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

High-entropy (Ca_0.2Sr_0.2Ba_0.2La_0.2Pb_0.2)TiO₃ perovskite ceramics with A-site short-range disorder for thermoelectric applications

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this