西北工程技术学报2025，Vol.24Issue(4)：340-346,7.DOI:10.26974/j.cnki.XBGC.2025.04.008
双交联网络与氮化硼纳米片协同提升PVDF复合电介质储能性能
The Synergistic Enhancement of Energy Storage Properties in PVDF Composite Dielectrics by Dual Cross-Linked Networks and Boron Nitride Nanosheets
摘要
Abstract
To develop dielectric materials with high energy storage density,an internally cross-linkable polymer containing intramolecular double bonds,denoted as PVDF-CTFE-DB,was prepared from poly(vinylidene fluoride-chlorotrifluoroethylene)(PVDF-CTFE)via an elimination reaction.Aminated boron nitride nanosheets(BNNS-NH2)were utilized as fillers to construct a dual cross-linked network composite dielectric material,c-PVDF-CTFE/BNNS-NH2.The findings indicate that the synergistic effect of chemical and hydrogen bond dual cross-linking enhances both the toughness and modulus of the polymer.Additionally,the wide bandgap(5.9 eV)and ultra-large specific surface area of BNNS-NH2 effectively increase the deep trap density of the composite,suppressing charge carrier migration and significantly improving both the breakdown strength and energy storage performance.At a filler content of 2.0 wt%,the composite achieves a breakdown strength of 575 MV/m and an energy storage density of 16.8 J/cm3,which is approximately 4.3 times greater than that of pristine PVDF-CTFE(301 MV/m,3.2 J/cm3)and 7.6 times that of commercial biaxially oriented polypropylene(BOPP).This study provides new insights into the design of high-performance dielectric capacitors and can significantly promote the development of high-energy and lightweight electronic power equipment.关键词
电介质/双交联/化学合成/击穿场强/储能密度Key words
dielectric/dual cross-linking/chemical synthesis/breakdown strength/energy storage density分类
通用工业技术引用本文复制引用
古丽尼尕尔·依力哈木,代炜昊,王亦歌,任青,王健..双交联网络与氮化硼纳米片协同提升PVDF复合电介质储能性能[J].西北工程技术学报,2025,24(4):340-346,7.基金项目
国家自然科学基金项目(52503094) （52503094）
宁夏青年科技托举人才培养项目 （）
宁夏自然科学基金项目(2023AAC03104) （2023AAC03104）
