High energy storage density realized in Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics at ultralow sintering temperature

被引：0

作者：

Zhang F. ^{[1
]}

Qiao X. ^{[1
]}

Shi Q. ^{[1
]}

Chao X. ^{[1
]}

Yang Z. ^{[1
]}

Wu D. ^{[1
]}

机构：

[1] Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an,

来源：

Yang, Zupei (yangzp@snnu.edu.cn) | 1600年 / Elsevier Ltd卷 / 41期

基金：

中国国家自然科学基金;

关键词：

BNT; Energy storage; Lead-free ceramics; Low sintering temperature;

D O I：

10.1016/j.jeurceramsoc.2020.07.067

中图分类号：

学科分类号：

摘要：

The miniaturization and integration trend of electronic applications requires high energy storage performance, and the development of multilayer ceramic capacitors (MLCC) demands the compatibility between ceramic sintering temperature and co-firing temperature of metal electrodes. Herein, we obtained a high recoverable energy storage density and a low sintering temperature simultaneously in 0.5(Bi0.5Na0.5)TiO3-0.5SrTiO3-x mol% CuO (0.5BNT-0.5ST-x mol% CuO) via the combination of adding CuO sintering aid and citrate sol-gel synthesis method. The optimum sintering temperature decreases significantly from 1130 °C for x = 0 to 820 °C for x = 2.0. The ceramic of 0.5BNT-0.5ST-1.5 mol% CuO exhibits a large Wrec of 2.20 J/cm3 and η of 72.39% under 230 kV/cm. Furthermore, the same sample also possesses a large CD of 1740.97 A/cm2, an extremely high PD of 139.28 MW/cm3 and an ultrafast discharge speed of 82 ns. These merits reveal that the ceramic of 0.5BNT-0.5ST-1.5 mol% CuO has great potential in practical MLCC production. © 2020 Elsevier Ltd

引用

页码：368 / 375

页数：7

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