Achieving high energy storage performance through tolerance factor design in Bi0.5Na0.5TiO3 based ceramic

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-07 DOI:10.1007/s10854-024-13761-4

Jiawei She, Haijun Mao, Fenglin Wang, Hu Ye, Yujiu Zhou, Xingyu Chen, Zhuofeng Liu, Wei Li, Weijun Zhang

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Abstract

The paper explores strategies to enhance the energy storage efficiency (η) of relaxor- ferroelectric (RFE) ceramics by tailoring the structural parameter tolerance factor (t), which indicates the stability of a perovskite. KTaO₃ (KT) with a t of 1.054 has been selected to modulate the t value of 0.75Bi_0.5Na_0.5TiO₃-0.25BaTiO₃ (BNT-BT, t = 0.9967), and a serials of (1 − x)(BNT-BT)-xKT (x = 0–0.10) RFE ceramics with t from 0.997 to 1.003 have been prepared. Structural analyses show that all the ceramics possess typical perovskite structure, and the average grain size decrease with the addition of KT. The tested dielectric characteristics present that with the increase of t to 1, the diffuse-phase-transition peak is gradually diminished in the dielectric constant vs temperature (ε_r-T) curves, while the relaxation-dielectric behavior is gradually strengthened, and the temperature stability of the dielectric constant is improved. The breakdown strength is also enlarged with the increase of KT content. As a result, the 0.94(BNT-BT)-0.06KT with t = 1.0004, which is closest to 1, achieving a recoverable energy storage density (W_rec) of 4.9 J/cm³ and η of 91.8% at 336 kV/cm, which are 191.7% and 49.5% higher than the W_rec (1.68 J/cm³) and η (61.4%) of pure 0.75BNT-0.25BT ceramic, respectively. These findings offer a promising approach for enhance the energy storage properties of RFE ceramics.

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通过设计基于 Bi0.5Na0.5TiO3 陶瓷的容差因子实现高储能性能

本文探讨了通过调整结构参数容限因子（t）来提高弛豫铁电（RFE）陶瓷储能效率（η）的策略，容限因子表示包晶石的稳定性。我们选择了 t 值为 1.054 的 KTaO3 (KT) 来调节 0.75Bi0.5Na0.5TiO3-0.25BaTiO3 (BNT-BT, t = 0.9967) 的 t 值，并制备了一系列 (1 - x)(BNT-BT)-xKT (x = 0-0.10) t 值在 0.997 至 1.003 之间的弛豫铁电陶瓷。结构分析表明，所有陶瓷都具有典型的包晶结构，平均晶粒尺寸随着 KT 的加入而减小。测试的介电特性表明，随着 t 增大到 1，介电常数与温度（εr-T）曲线中的扩散相变峰逐渐减小，弛豫介电行为逐渐增强，介电常数的温度稳定性得到改善。击穿强度也随着 KT 含量的增加而增大。结果，t = 1.0004（最接近 1）的 0.94(BNT-BT)-0.06KT，在 336 kV/cm 下的可恢复储能密度（Wrec）达到 4.9 J/cm3，η 达到 91.8%，分别比纯 0.75BNT-0.25BT 陶瓷的 Wrec（1.68 J/cm3）和 η（61.4%）高出 191.7% 和 49.5%。这些发现为提高 RFE 陶瓷的储能特性提供了一种可行的方法。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.