High-temperature energy storage dielectric with inhibition of carrier injection/migration based on band structure regulation
作者机构：Key Laboratory of Engineering Dielectrics and Its ApplicationMinistry of EducationHarbin University of Science and TechnologyHarbinPeople's Republic of China
出 版 物：《InfoMat》 (信息材料（英文）)
年 卷 期：2023年第5卷第2期
页 面：22-33页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：This research was funded by the National Natural Science Foundation of China(No.U20A20308,52177017,and 51977050) Natural Science Foundation of Heilongjiang Province of China(No.YQ2021E036 and ZD2020E009) China Postdoctoral Science Foundation(No.2020T130156) Heilongjiang Postdoctoral Financial Assistance(No.LBHZ18098) Fundamental Research Foundation for Universities of Heilongjiang Province(No.2019-KYYWF-0207 and 2018-KYYWF-1624) University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province(UNPYSCT-2020177)
主 题：electron injection and transport heterojunction high temperature energy storage characteristics insulation polycarbonate
摘 要：Dielectric capacitors have a high power density,and are widely used in military and civilian *** main problem lies in the serious deterioration of dielectric insulation performance at high *** this study,a polycarbonate(PC)-based energy storage dielectric was designed with BN/SiO_(2)heterojunctions on its *** on this structural design,a synergistic suppression of the carrier injection and transport was achieved,significantly improving the insulating properties of the polymer *** particular,the composite film achieves optimal high-temperature energy-storage *** composite film can withstand an electric field intensity of 760 MV m^(-1)at 100℃and obtain an energy storage density of 8.32 J cm^(-3),while achieving a breakthrough energy storage performance even at 150℃(610 MV m^(-1),5.22 J cm^(-3)).Through adjustment of the heterojunction structure,free adjustment of the insulation performance of the material can be realized;this is of great significance for the optimization of the material properties.
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