Enhanced energy storage characteristics of the epoxy film with rigid phenyl-flexible etherified methylene chains

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外文摘要：The introduction of highly polarized flexible segments into polymer molecular chains is an effective means to improve the dielectric constant and mechanical flexibility of polymers,which is important for improving the energy storage characteristics and applicability for the roll-to-roll process of metallic film capacitors.However,the introduction of flexible segments may adversely affect the heat resistance of polymer materials,which limits their application at high working temperatures.In this work,we have prepared a novel epoxy film with excellent comprehensive properties by introducing rigid phenyl and flexible etherified methylene side chains.For instance,the optimal epoxy film showed an energy storage density of 7.06 J cm-3 and 85％charge-discharge efficiency at room temperature and 420 kV mm-1.At 200 kV mm-1 and 110 ℃,a working condition for the application of the electric vehicle,the prepared film still showed an energy storage density of 1.5 J cm-3 and charge-discharge efficiency of 86％,which is 3 times that of BOPP film.This work provides an idea for material designs of high-performance polymer film capacitors.

外文关键词：

Epoxy filmAmine hardenersFlexible side chainThermodynamic propertiesDielectric propertiesEnergy storage performance

作者：

Zhengdong Wang、Mengli Li、Botao Liu、Ganqiu Yang、Meng Luo、Tong Zhang、Ling Li、Yonghong Cheng、Zirui Jia、Guanglei Wu

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作者单位：

School of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China

State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University,Xi'an 710049,China

Institute of Materials for Energy and Environment,State Key Laboratory of Bio-Fibers and Eco-Textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Open ProjectShaanxi Provincial science and Technology Department Youth FoundationShaanxi Province Industry-University-Research Collaborative Innovation PlanTaishan Scholars and Young Experts Program of Shandong ProvinceQingchuang Talents Induction Program of Shandong Higher Education InstitutionSpecial Financial of Shandong ProvinceInstrumental Analysis Center Xi'an University of Architecture and Technology

项目编号：

523070285230119252377026EIPE222102022JQ-3002023YFBT-45-02tsqn202103057

出版年：

2024

DOI：

10.1016/j.jmst.2023.10.026

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.183(16)