A novel relaxor (Bi,Na,Ba)(Ti,Zr)O3 lead-free ceramic with high energy storage performance

被引：33

作者：

Bilal, Muhammad Kashif ^{[1
,2
]}

Wang, Jian ^{[1
,2
]}

Bashir, Rabia ^{[2
]}

Liu, Huan ^{[1
]}

Asif, Sana Ullah ^{[2
]}

Xie, Jiyang ^{[1
]}

Hu, Wanbiao ^{[1
,2
]}

机构：

[1] Yunnan Univ, Sch Mat & Energy, Natl Ctr Int Res Photoelect & Energy Mat, Key Lab LCR Mat & Devices Yunnan Prov, Kunming 650091, Yunnan, Peoples R China

[2] Yunnan Univ, Sch Phys & Astron, Kunming, Yunnan, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2021年 / 104卷 / 08期

基金：

国家重点研发计划;

关键词：

ferroelectricity; ferroelectric materials; lead‐ free ceramics; relaxors;

D O I：

10.1111/jace.17785

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：

Energy storage ceramic capacitors advance in high power density and working voltage, but challenge in simultaneously large recoverable energy density (W-rec), high energy efficiency (eta), and good thermal stability. To achieve this, a novel lead-free ceramic system (1-x)(Bi0.5Na0.5)TiO3-x(BaZr0.3Ti0.7O3) [(1-x)BNT-xBZT] was explored by tailoring the ferroelectric relaxor states. The introduction of BZT gradually promotes the transformation of ferroelectric states into relaxor states at around the room temperature for x = 0.3-0.5 that presents a pinched P-E loop. The optimized composition of x = 0.45 possesses a large W-rec of up to 2.6 J/cm(3) and ultrahigh n of 94%, with only a small variation (+/- 8%) in W-rec and the high n (90%) over a broad temperature range (-30 degrees C to 180 degrees C), demonstrating the superior performances compared to many existing lead-free ceramics. The remarkable advantages of the novel BNT-BZT lead-free ceramics explored in this study are thus promising for the high-efficiency and temperature-stable energy storage capacitor applications.

引用

页码：3982 / 3991

页数：10

共 55 条

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