Design of Lead-Free Films with High Energy Storage Performance via Inserting a Single Perovskite into Bi4Ti3O12  

作　　者：Qiong Wu Xin Wu Yue-Shun Zhao Shifeng Zhao 吴琼;邬新;赵悦顺;赵世峰(Inner Mongolia Key Lab of Nanoscience and Nanotechnology,and School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021,China)

机构地区：[1]Inner Mongolia Key Lab of Nanoscience and Nanotechnology,and School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021,China

出　　处：《Chinese Physics Letters》2020年第11期104-109,共6页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.11864028 and 12074204)。

摘　　要：We report a distinctive way for designing lead-free films with high energy storage performance.By inserting different single perovskite cells into Bi4 Ti3 O12,P-E hysteresis loops present larger maximum polarization,higher breakdown strength and smaller slim-shaped area.We prepared 0.15 Bi7 Fe3 Ti3 O21-0.5 Bi4 Sr3 Ti6 O21-0.35 Bi4 Ba3 Ti6 O21 solid solution ferroelectric films employing the sol-gel method,and obtained high energy storage density of 132.5 J/cm3 and efficiency of 78.6%while maintaining large maximum polarization of 112.3μC/cm2 and a high breakdown electric field of 3700 kV/cm.Moreover,the energy storage density and efficiency exhibit stability over the temperature range from 20℃to 125℃,and anti-fatigue stability maintains up to 108 cycles.The films with a simple preparation method and high energy storage performance are likely to become candidates for high-performance energy storage materials.

关 键 词：BI4TI3O12 BREAKDOWN POLARIZATION 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB383.2[一般工业技术—材料科学与工程]