Graphene/polymer nanocomposites with high dielectric performance: Interface engineering

Abstract

High permittivity polymer-based composites are highly desired due to their potential applications as high energy density capacitors and inherent advantages of easy processing, flexibility and light weight. Graphene, a two-dimensional nanomaterial with a layer thickness of one atom, has showed many outstanding properties and aroused tremendous research enthusiasm. Its large aspect ratio, high surface area and high electric conductivity make it an ideal filler for fabricating polymer-based percolative nanocomposites with high dielectric performance. This chapter reviews progresses in graphene-filled polymer nanocomposites with high permittivity that have been made over the past few years. The basic theory of percolation and the interface effect of graphene/polymer on the dielectric properties of nanocomposites are discussed.