Layered binary-dielectrics for energy applications: Limitations and potentials

In this short paper, an attempt is made to illustrate how performance of an electrically insulating material, a dielectric, can be improved by constructing a layered binary-dielectric structure that employs a weak insulator with high dielectric permittivity. It is shown that layered binary-dielectrics could have a significant impact on energy storage and electrical insulation.

► Binary layered dielectrics are modeled. ► Dielectric permittivity and thickness dependent breakdown properties are employed. ► Necessary conditions for high energy density applications are obtained. ► It is plausible to have high energy density materials with sandwich structures.