Regulating local electric field to optimize the energy storage performance of antiferroelectric ceramics via a composite strategy

作     者：Ying Yang Zhanming Dou Kailun Zou Kanghua Li Wei Luo Wen Dong Guangzu Zhang Qiuyun Fu Shenglin Jiang 

作者机构：School of Optical and Electronic InformationEngineering Research Center for Functional Ceramics MOE and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China China Zhenhua Group Yunke Electmnics Co.Ltd.Guiyang 550018China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2023年第12卷第3期

页      面：598-611页

核心收录：

学科分类：080503[工学-材料加工工程] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(51972126,51972125,and 52172114) the Key Research and Development Project of Hubei Province(2020BAB067) HUST International Cooperation and Exchange Project,Double First Class Program of China(5001182055) the Innovation Research Fund of Huazhong University of Science and Technology(2019KFYRCPY126 and 2018KFYYXJJ052) the Innovation Fund of WNLO.We also would like to acknowledge the Analytical and Testing Center of Huazhong University of Science and Technology 

主　　题：energy storage antiferroelectric composites local electric field electric breakdown strength 

摘      要：Electrostatic energy storage technology based on dielectrics is the basis of advanced electronics and high-power electrical *** polarization(P)and high electric breakdown strength(Eb)are the key parameters for dielectric materials to achieve superior energy storage *** this work,a composite strategy based on antiferroelectric dielectrics(AFEs)has been proposed to improve the energy storage ***,AlN is selected as the second phase for the(Pb_(0.915)Ba_(0.04)La_(0.03))(Zr_(0.65)Sn_(0.3)Ti_(0.05))O_(3)(PBLZST)AFEs,which is embedded in the grain boundaries to construct insulating networks and regulate the local electric field,improving the ***,it is emphasized that AFEs have the AFE–FE and FE–AFE phase transitions,and the increase of the phase transition electric fields can further improve the recoverable energy density(Wrec).As a result,the Eb increases from 180 to 290 kV·cm−1 with a simultaneous increase of the phase transition electric fields,magnifying the Wrec to~144%of the pristine *** mechanism for enhanced Eb and the phase transition electric fields is revealed by the finite element simulation ***,the PBLZST:1.0 wt%AlN composite ceramics exhibit favorable temperature stability,frequency stability,and charge–discharge ability,making the composite ceramics a promising candidate for energy storage applications.