Flexible mica films coated by magnetron sputtered insulating layers for high-temperature capacitive energy storage  

作　　者：Chao Yin Tiandong Zhang Changhai Zhang Yue Zhang Chang Kyu Jeong Geon-Tae Hwang Qingguo Chi 

机构地区：[1]Key Laboratory of Engineering Dielectrics and its Application,Ministry of Education,Harbin University of Science and Technology,Harbin,China [2]School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin,China [3]Division of Advanced Materials Engineering,Jeonbuk National University,Jeonju,South Korea [4]Department of Materials Science and Engineering,Pukyong National University,Busan,South Korea

出　　处：《SusMat》2024年第5期154-162,共9页可持续发展材料（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:U20A20308,92366204,52277024;Fundamental Research Foundation for Universities of Heilongjiang Province,Grant/Award Number:2023-KYYWF-0113。

摘　　要：High-temperature energy storage performance of dielectric capacitors is cru-cial for the next generation of power electronic devices.However,conduction losses rise sharply at elevated temperature,limiting the application of energy storage capacitors.Here,the mica films magnetron sputtered by different insulating layers are specifically investigated,which exhibit the excellent high-temperature energy storage performance.The experimental results revealed that the PbZrO3/Al2O3/PbZrO3(PZO/AO/PZO)interface insulating layers can effec-tively reduce the high-temperature leakage current and conduction loss of the composite films.Consequently,the ultrahigh energy storage density(Wrec)and charge‒discharge efficiency(η)can be achieved simultaneously in the flexi-ble mica-based composite films.Especially,PZO/AO/PZO/mica/PZO/AO/PZO(PAPMPAP)films possess excellent Wrec of 27.5 J/cm3 andηof 87.8%at 200◦C,which are significantly better than currently reported high-temperature capaci-tive energy storage dielectric materials.Together with outstanding power density and electrical cycling stability,the flexible films in this work have great appli-cation potential in high-temperature energy storage capacitors.Moreover,the magnetron sputtering technology can deposit large-area nanoscale insulating layers on the surface of capacitor films,which can provide technical support for the industrial production of capacitors.

关 键 词：energy storage high temperature insulating layer magnetron sputtering MICA 

分 类 号：TB43[一般工业技术]