Dielectric Polymer Materials for Electrical Energy Storage and Dielectric Physics: A Guide

It is likely a 'curse' to solve the contradiction of dielectric materials with an improvement of dielectric permittivity, highly electrical breakdown strength and low dielectric loss. In term of understanding for dielectric physics and analyzing on recent researches of dielectric polymer materials, this work will show how to design and realize molecular structure and microstructure of polymer materials or polymer-matrix composites with excellent dielectric properties so that the high-density energy storage capacitors can be arrived in the future. Both of introducing suitable polar group into macromolecular chain and enhancing the concentration of dipolar are considered to be a necessary condition for achieving the high dielectric permittivity energy storage polymer materials. Yet it is not enough that the polar constituents are considered in designing the dielectric polymer materials. In fact, the dielectric polymer composite materials with both optimal composition and valuable microstructure should be given more attention because this is an effective strategy to realize the high-performance dielectric polymer materials with low lost and large-scale fabrication for engineering application in the future.