Improved breakdown strength and energy density of polyimide composites by interface engineering between BN and BaTiO3 fibers

被引：3

作者：

Baoquan Wan ^{[1
]}

Haiyu Li ^{[1
]}

Yunhui Xiao ^{[1
]}

Zhongbin Pan ^{[2
]}

Qiwei Zhang ^{[1
,3
]}

机构：

[1] Inner Mongolia Key Laboratory of Ferroelectric-related New Energy Materials and Devices, Inner Mongolia University of Science and Technology

[2] Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology

[3] School of Materials Science and Chemical Engineering, Ningbo University

来源：

JournalofMaterialsScience&Technology | 2021年 / 74卷 / 15期

关键词：

Interface effects; Breakdown strength; Energy storage density; Polyimide;

D O I：

暂无

中图分类号：

TQ323.7 [聚酰亚胺类及塑料]; TB332 [非金属复合材料];

学科分类号：

0805 ; 080502 ;

摘要：

Conventionally, interface effects between polymers and fillers are essential for determining the breakdown strength and energy storage density of polymer-based dielectric composites. In this study, we found that interface effects between different fillers have similar behavior. BN and Ba TiOfiber composite fillers with three different interface bonding strengths were successfully achieved by controlling composite processes(BT-fiber/BN < BT-fiber@BN < BT-fiber&BN), and introduced into a polyimide(PI)matrix to form composite films. Considerably enhanced breakdown strength and energy storage density were obtained in BT-fiber&BN/PI composites owing to strong interface bonding, compared to other two composite fillers, which are well supported by the data from the finite element simulation. Specifically, PI composites with only 3 wt% BT-fiber&BN possess an optimized energy storage density of approximately 4.25 J/cm~3 at 4343 k V/cm. These results provide an effective way for adjusting and improving the energy storage properties of polymer-based composites.

引用

页码：1 / 10

页数：10

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