Significantly Enhanced Energy Storage Performances of PEI-based Composites Utilizing Surface Functionalized ZrO2 Nanoparticles for High-Temperature Application

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外文摘要：Polymer dielectrics with a high energy density and an available energy storage capacity have been playing an important role in ad-vanced electronics and power systems.Nevertheless,the use of polymer dielectrics in harsh environments is limited by their low energy density at high temperatures.Herein,zirconium dioxide(ZrO2)nanoparticles were decorated with amino group utilizing 4,4-methylenebis(phenyl isocyanate)(AMEO)and successfully incorporated into polyetherimide(PEI)matrix.The dielectric properties,breakdown strength,and energy storage performances of PEI/ZrO2-AMEO nanocomposites were investigated from 25 ℃ to 150 ℃.It is found that the combination of moderate bandgap ZrO2 with modest dielectric constant and polar groups at interface with deep trap can offer an available strategy to simultaneously in-crease the dielectric constant and breakdown strength of polymer dielectrics.As a result,the composites containing ZrO2-AMEO exhibit excel-lent energy storage performance at elevated temperatures.Specially,the PEI-based composites with 3 vol％ZrO2-AMEO display a maximum dis-charged energy density(Ud)of 3.1 J/cm3 at 150 ℃,presenting 90％higher than that of neat PEI.This study may help to better develop the poly-mer-based dielectric composite applied at elevated temperatures.

外文关键词：

PolyetherimideHigh temperature dielectricZrO2Interface

作者：

Qing-Qing Liu、Qiu-Hao Lin、Xiao-Dong Qi、Nan Zhang、Ting Huang、Jing-Hui Yang、Yong Wang

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作者单位：

School of Chemistry,Southwest Jiaotong University,Chengdu 610031,China

Key Laboratory of Advanced Technologies of Materials,Ministry of Education of China,Southwest Jiaotong University,Chengdu 610031,China

基金：

Sichuan Science and Technology ProgramNSAF projectYouth Science and Technology Innovation Team of Sichuan Province of Functional Polymer CompositesKey Researched Development Program of Sichuan Province

项目编号：

2022ZHCG0122U22301202021JDTD00092022YFG0271

出版年：

2024

DOI：

10.1007/s10118-024-3068-x

高分子科学(英文版)

中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCD

影响因子：0.721

ISSN：0256-7679

年,卷(期)：2024.42(3)

参考文献量41