Improved capacitive energy storage in sodium niobate-based relaxor antiferroelectric ceramics

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2023-02-13 DOI:10.1063/5.0134282

Tianze Pan, Ji Zhang, Dongxiao Che, Zhengyu Wang, Jiajia Wang, Jing Wang, Yaojin Wang

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引用次数: 7

Abstract

Ceramic-based dielectric capacitors have become an attractive issue due to their wide applications in current pulsed-/high-power electronic devices. Antiferroelectric ceramics generally exhibit ultrahigh energy density owing to their giant polarization activated by antiferroelectric–ferroelectric phase transition under a high electric field but suffer from large hysteresis, meanwhile giving rise to low efficiency. Herein, by introducing perovskite compound Sr(Fe0.5Ta0.5)O3 into an antiferroelectric NaNbO3 matrix, a stabilized antiferroelectric phase and an improved relaxor behavior are observed. That is, relaxor antiferroelectric ceramics are constructed. Accordingly, a double polarization–electric field ( P–E) loop becomes slimmer with increasing incorporation of dopants, leading to an ultrahigh recoverable energy density of 11.5 J/cm3, an energy storage efficiency of 86.2%, outstanding frequency/cycling/thermal reliability, and charge–discharge properties in 0.90NaNbO3-0.10Sr(Fe0.5Ta0.5)O3 ceramics. This work reveals that inducing the relaxor behavior in antiferroelectric materials is an effective route to improve their capacitive energy storage.

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铌酸钠基弛豫反铁电陶瓷电容储能性能的改进

陶瓷基介质电容器由于其在电流脉冲/大功率电子器件中的广泛应用而成为一个有吸引力的问题。反铁电陶瓷在高电场作用下，由于反铁电-铁电相变激活了巨大的极化，因而具有超高的能量密度，但磁滞大，效率低。本文通过将钙钛矿化合物Sr(Fe0.5Ta0.5)O3引入到反铁电NaNbO3基体中，观察到一个稳定的反铁电相和改善的弛豫行为。也就是说，构建了弛豫反铁电陶瓷。因此，随着掺杂剂掺入量的增加，双极化电场(P-E)回路变得更细，使得0.90NaNbO3-0.10Sr(Fe0.5Ta0.5)O3陶瓷的可回收能量密度达到11.5 J/cm3，储能效率达到86.2%，具有出色的频率/循环/热可靠性和充放电性能。研究表明，诱导反铁电材料的弛豫行为是提高其容性能量存储的有效途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.