Significantly Improved High-Temperature Energy Storage Performance of BOPP Films by Coating Nanoscale Inorganic Layer

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外文摘要：Biaxially oriented polypropylene(BOPP)is one of the most commonly used commercial capacitor films,but its upper operating temperature is below 105 ℃ due to the sharply increased electrical conduction loss at high temperature.In this study,growing an inorganic nanoscale coating layer onto the BOPP film's surface is proposed to suppress electrical conduction loss at high temperature,as well as increase its upper operating temperature.Four kinds of inorganic coating layers that have different energy band structure and dielectric property are grown onto the both surface of BOPP films,respectively.The effect of inorganic coating layer on the high-temperature energy storage performance has been systematically investigated.The favorable coating layer materials and appropriate thickness enable the BOPP films to have a significant improvement in high-temperature energy storage performance.Specifically,when the aluminum nitride(AIN)acts as a coating layer,the AIN-BOPP-AIN sandwich-structured films possess a discharged energy density of 1.5 J cm-3 with an efficiency of 90％at 125 ℃,accompanying an outstandingly cyclic property.Both the discharged energy density and operation temperature are significantly enhanced,indicating that this efficient and facile method provides an important reference to improve the high-temperature energy storage performance of polymer-based dielectric films.

外文关键词：

coating layerenergy storageinterfacial barrierpolymer films

作者：

Tiandong Zhang、Hainan Yu、Young Hoon Jung、Changhai Zhang、Yu Feng、Qingguo Chen、Keon Jae Lee、Qingguo Chi

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作者单位：

School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China

Department of Materials Science and Engineering,Korea Advanced Institute of Science and Technology,Daejeon 350701,Korea

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Heilongjiang ProvinceChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationHeilongjiang Province Postdoctoral Science FoundationUniversity Nursing Program for Young Scholars with Creative Talents in Heilongjiang ProvinceChina Scholarship Council(CSC)

项目编号：

52277024U20A20308YQ2020E0312021T1401662018M640303LBH-Z18099UNPYSCT-2020178

出版年：

2024

DOI：

10.1002/eem2.12549

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(2)