聚偏氟乙烯基复合材料储能特性优化策略  

Optimization strategies for energy storage properties of polyvinylidene fluoride composites*

作　　者：查俊伟[1,2] 查磊军 郑明胜 Zha Jun-Wei;Zha Lei-Jun;Zheng Ming-Sheng(School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学化学与生物工程学院,北京100083 [2]北京科技大学北京材料基因工程高精尖创新中心,北京100083

出　　处：《物理学报》2023年第1期318-330,共13页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51977114)资助的课题.

摘　　要：介质电容器具有充放电速率快、低损耗以及柔性易加工等优点,广泛应用于电子电力系统中的关键储能器件,但介质电容器储能密度较低,难以适用于现阶段电气工程更高的应用需求,聚偏氟乙烯(PVDF)基聚合物因具有较高的介电常数与较高的击穿强度得到广泛关注,因此本文着重介绍了以PVDF为基体的储能复合材料,归纳和讨论包括介电常数、击穿强度和充放电效率3个提高储能密度的机理及其优化策略.最后对高储能PVDF基复合材料现阶段存在的问题以及将来所需要研究的重点进行总结与展望.Dielectric capacitors have been widely used in crucial energy storage systems of electronic power systems because of their advantages such as fast charge discharge rates,long cycle lifetimes,low losses,and flexible and convenient pro cess ingc.However,the dielectric capacitors have lower energy storage densities than electrochemical energy storage devices,which makes them difficult to meet higher application requirements for electrical engineering at the present stage.Polyvinylidene fluoride(PVDF) based polymers show great potential in achieving improved energy storage properties,which is attributed to their high dielectric constants and high breakdown strengths.This work systematically reviews PVDF-based nanocomposites for energy storage applications.Dielectric constant,breakdown strength and charge discharge efficiency are three main parameters related to energy storage properties,which are proposed to discuss their mechanisms of action and optimization strategies.Finally,the key scientific problems of PVDF-based high energy storage composites are summarized and considered,and the future development trend of dielectric capacitors is also prospected.

关 键 词：介质电容器 聚偏氟乙烯 复合材料 储能密度 

分 类 号：TM53[电气工程—电器] TB332[一般工业技术—材料科学与工程]