Large electrocaloric effect with ultrawide temperature span in Na1/2Bi1/2TiO3-based lead-free ceramics

Qiumei Wei; Lovro Fulanovic; Kodumudi Venkataraman Lalitha; Mupeng Zheng; Yudong Hou; Mankang Zhu; Linjing Liu; Yunfei Chang; Rui Xue

doi:10.1111/jace.18291

Large electrocaloric effect with ultrawide temperature span in Na_1/2Bi_1/2TiO₃-based lead-free ceramics

Qiumei Wei
, Lovro Fulanovic
, Kodumudi Venkataraman Lalitha
, Mupeng Zheng
, Yudong Hou
, Mankang Zhu^*
, Linjing Liu
, Yunfei Chang
, Rui Xue

^*Corresponding author for this work

Beijing University of Technology
Technische Universität Darmstadt
Harbin Institute of Technology
Ltd.

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

9 Scopus citations

Abstract

Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9°C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120°C is noted for lead-free (Na_1/2Bi_1/2)_0.80Sr_0.20(Zn_1/3Nb_2/3)_xTi_1-_xO₃ ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures.

Original language	English
Pages (from-to)	3312-3321
Number of pages	10
Journal	Journal of the American Ceramic Society
Volume	105
Issue number	5
DOIs	https://doi.org/10.1111/jace.18291
State	Published - May 2022
Externally published	Yes

Keywords

Na0.5Bi0.5TiO
dielectric
electrocaloric effect
lead–free ferroelectrics
relaxor behavior

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10.1111/jace.18291

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@article{8ac221d146c84f64b8fbef8865cb7365,

title = "Large electrocaloric effect with ultrawide temperature span in Na1/2Bi1/2TiO3-based lead-free ceramics",

abstract = "Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9°C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120°C is noted for lead-free (Na1/2Bi1/2)0.80Sr0.20(Zn1/3Nb2/3)xTi1-xO3 ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures.",

keywords = "Na0.5Bi0.5TiO, dielectric, electrocaloric effect, lead–free ferroelectrics, relaxor behavior",

author = "Qiumei Wei and Lovro Fulanovic and Lalitha, \{Kodumudi Venkataraman\} and Mupeng Zheng and Yudong Hou and Mankang Zhu and Linjing Liu and Yunfei Chang and Rui Xue",

note = "Publisher Copyright: {\textcopyright} 2021 The American Ceramic Society",

year = "2022",

month = may,

doi = "10.1111/jace.18291",

language = "英语",

volume = "105",

pages = "3312--3321",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Large electrocaloric effect with ultrawide temperature span in Na1/2Bi1/2TiO3-based lead-free ceramics

AU - Wei, Qiumei

AU - Fulanovic, Lovro

AU - Lalitha, Kodumudi Venkataraman

AU - Zheng, Mupeng

AU - Hou, Yudong

AU - Zhu, Mankang

AU - Liu, Linjing

AU - Chang, Yunfei

AU - Xue, Rui

PY - 2022/5

Y1 - 2022/5

N2 - Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9°C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120°C is noted for lead-free (Na1/2Bi1/2)0.80Sr0.20(Zn1/3Nb2/3)xTi1-xO3 ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures.

AB - Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9°C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120°C is noted for lead-free (Na1/2Bi1/2)0.80Sr0.20(Zn1/3Nb2/3)xTi1-xO3 ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures.

KW - Na0.5Bi0.5TiO

KW - dielectric

KW - electrocaloric effect

KW - lead–free ferroelectrics

KW - relaxor behavior

UR - https://www.scopus.com/pages/publications/85122307017

U2 - 10.1111/jace.18291

DO - 10.1111/jace.18291

M3 - 文章

AN - SCOPUS:85122307017

SN - 0002-7820

VL - 105

SP - 3312

EP - 3321

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 5

ER -

Large electrocaloric effect with ultrawide temperature span in Na_1/2Bi_1/2TiO₃-based lead-free ceramics

Abstract

Keywords

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