Energy-storage properties of low-temperature Co-fired BNT-ST/AgPd multilayer lead-free ceramic capacitors

被引：24

作者：

Tong, Xing-Ye ^{[1
,2
]}

Yang, Yu-Ting ^{[1
]}

Song, Min-Wei ^{[1
]}

Zhou, Jia-Jun ^{[1
]}

Wang, Ke ^{[3
]}

Guan, Chun-Lin ^{[1
]}

Liu, Hong ^{[1
]}

Fang, Jing-Zhong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 827卷

基金：

中国国家自然科学基金;

关键词：

Na0.5Bi0.5TiO3; Lead-free piezoceramics; Energy storage properties; Multilayer ceramic capacitor; RELAXOR FERROELECTRIC CERAMICS; FIELD-INDUCED STRAIN; THERMAL-STABILITY; DENSITY;

D O I：

10.1016/j.jallcom.2020.154260

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A lead-free 0.6Bi(0.5)Na(0.5)TiO(3)-0.4SrTiO(3) ceramic doped with Nb2O5, CuO and MnO2 additives (BNSr(0.4)TNbxCu(0.8)Mn(0.15)) was synthesized at a relatively low firing temperature of 1050 degrees C. Using this composition, multilayer ceramic capacitors with AgPd inner electrodes were successfully prepared by a tape-casting method for energy storage applications. Due to the high polarization P-max and low hysteresis, the largest recoverable energy storage density W-rec value of 1.9 J/cc and high efficiency eta of 89% were obtained in the BNSr0.4TNb2.5Cu0.8Mn0.15 composition under a low electric field of 170 kV/cm. The multilayer BNSr0.4TNb2.5Cu0.8Mn0.15/Ag75Pd25 capacitors contain 30 active layers, in which the thickness of a single ceramic layer was approximately 27 mu m. Under a low electric field of 270 kV/cm, excellent energy storage performance was observed in multilayer capacitors, with a W-rec of 2.83 J/cc and eta of 85%. The capacitors demonstrate the temperature insensitive properties that the variation in W-rec was less than 5% between 25 degrees C and 100 degrees C. These results indicate that this ceramic capacitor is a promising candidate for lead-free energy storage applications. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：8