无机材料学报 ›› 2020, Vol. 35 ›› Issue (6): 633-646.DOI: 10.15541/jim20190308

所属专题: 封面文章

• 综述 • 上一篇    下一篇

无铅块体陶瓷的电卡效应: 现状与挑战

喻瑛1,杜红亮1,2(),杨泽田1,靳立2,屈绍波1   

  1. 1. 空军工程大学 基础部, 西安 710051
    2. 西安交通大学 电子与信息学部 电子陶瓷与器件教育部重点实验室, 西安 710049
  • 收稿日期:2019-06-25 修回日期:2019-09-03 出版日期:2020-06-20 发布日期:2019-12-04
  • 作者简介:喻 瑛(1991-), 女, 博士研究生. E-mail: yuying7574@163.com;<br/>YU Ying(1991-), female, PhD candidate. E-mail:yuying7574@163.com
  • 基金资助:
    国家自然科学基金(51772239);陕西省自然科学基金(2020JM-635)

Electrocaloric Effect of Lead-free Bulk Ceramics: Current Status and Challenges

YU Ying1,DU Hongliang1,2(),YANG Zetian1,JIN Li2,QU Shaobo1   

  1. 1. Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China
    2. Electronic Materials Research Laboratory, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
  • Received:2019-06-25 Revised:2019-09-03 Online:2020-06-20 Published:2019-12-04
  • Supported by:
    National Natural Science Foundation of China(51772239);Natural Science Foundation of Shanxi Province(2020JM-635)

摘要:

基于电卡效应的固态制冷技术, 具有高效、环境友好、轻量、低成本和易于小型化等优点, 是替代传统压缩机制冷的理想技术之一。在施加或去除电场时产生较大极化变化的铁电材料, 则是制备基于电卡效应固态制冷器件的理想材料。近年来, 人类对环境可持续发展的需求, 使无铅块体陶瓷的电卡效应研究成为铁电材料领域的研究热点之一。本文首先回顾电卡效应研究历史上的标志性事件, 随后简要介绍电卡制冷的原理, 提出了在室温附近获得宽温区和大电卡温变的材料设计思路, 之后系统综述了BaTiO3基、Bi0.5Na0.5TiO3基和K0.5Na0.5NbO3基无铅块体陶瓷电卡效应的研究进展, 重点分析了这三类无铅块体陶瓷电卡效应的独特优势和面临的挑战, 最后对无铅块体陶瓷电卡效应的发展趋势进行了展望。

关键词: 无铅块体陶瓷, 电卡效应, 击穿场强, 相变, 综述

Abstract:

Solid-state cooling technology based on the electrocaloric (EC) effect is attracting increasing attention as an important alternative for traditional cooling systems because of its advantages of high efficiency, environmental friendliness, light weight, low cost, and easy miniaturization. Ferroelectric materials are suitable candidates for EC refrigeration due to their large polarization and entropy change through applying or removing an external electric field. Recently, study on the EC effect of lead-free bulk ceramics has become one of hot topics on ferroelectric community due to the requirements of sustainable development. In this review, we firstly introduce the significant history events in EC research and the basic principles of EC refrigeration. Then, design strategy for achieving a large EC temperature change near room temperature and a wide using range is summarized. Subsequently, we systematically review the research status of EC effect in BaTiO3-based, Bi0.5Na0.5TiO3-based and K0.5Na0.5NbO3-based lead-free bulk ceramics and discuss their advantages as well as challenges. Finally, we propose some prospects for the future work on EC effect in lead-free bulk ceramics.

Key words: lead-free bulk ceramics, electrocaloric effect, dielectric breakdown strength, phase transition, review

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