Superior energy storage performance of BNT-based ferroelectric ceramics based on maintaining high polarization and breakdown strength

被引：8

作者：

Jiang, Mingjia ^{[1
]}

Peng, Zhanhui ^{[1
]}

Zhou, Qiyuan ^{[1
]}

Wu, Di ^{[1
]}

Wei, Lingling ^{[2
]}

Liang, Pengfei ^{[3
]}

Chao, Xiaolian ^{[1
]}

Yang, Zupei ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Shaanxi Key Lab Adv Energy Devices,Shaanxi Engn La, Xian 710062, Peoples R China

[2] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Shaanxi, Peoples R China

[3] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2024年 / 14卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Energy storage; Bi0.5Na0.5TiO3; ceramics; relaxor characteristics; breakdown strength; DENSITY;

D O I：

10.1142/S2010135X23400052

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Bi0.5Na0.5TiO3 (BNT)-based lead-free ceramics with superior ferroelectric properties are considered to be extremely advantageous in energy storage capacitors for future green technologies. Here, we demonstrate an approach to achieve both ultrahigh energy density W-rec and efficiency eta by regulating the multiscale electropolar structures and microstructure. A satisfactory energy storage performance of a high W-rec of 4.02J & sdot;cm(-3), and a decent eta of 80% under 415kV & sdot;cm(-1) are attained in the 0.5(BNT-CS)-0.5SB(0.2)T ceramic (abbreviated as BNT-0.2SBT). Moreover, BNT-0.2SBT exhibits superior power density (P-D=107MW & sdot;cm(-3)), ultrafast discharge time (t(0.9)=116ns) at 150kV & sdot;cm(-1), and good temperature stability. The findings in this work not only demonstrate that a valid candidate, but also provide a new idea of how to achieve both high-energy storage density and efficiency in lead-free ferroelectric materials.

引用

页数：10

共 45 条

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