Role of dielectric permittivity in electrode materials for energy storage device applications: A fundamental and brief overview

The rising demand and commercialization of power pulse systems led to the discovery of modern and advanced materials. In this context, exploring new dielectric materials is the first choice among researchers due to their low loss electromagnetic response, good thermal stability, and high energy density. On the basis of physical structure, the active materials with smaller remnant polarization, higher saturated polarization, and higher breakdown fields used in power electronics are extremely capable materials. Accordingly, there are a number of advanced materials used in next-generation power supercapacitors, here we highlight, four different kinds of materials, i.e., anti- ferroelectric, dielectric ceramic-glasses, relaxer ferroelectric, and polymer-derived ferroelectrics. This chapter covers the recent progressive efforts in the development of dielectric materials for better energy storage performance, al, the future prospects is highlighted at the end to push their role in practical application.