“…Conductive polymer composites (CPCs), which comprise insulating polymers and conductive fillers, are of significant interest for electromagnetic interference shielding (EMI), sensors, and energy storage. Various types of fillers are used to produce composites for EMI shielding applications. − Of these, carbonaceous fillers such as graphene and carbon nanotubes (CNTs) are known to be effective conductive fillers for the fabrication of CPCs on account of their modifiable aspect ratio, low density, flexibility, and superior electrical properties such as conductivity, dielectric permittivity, dielectric loss, and piezoresistivity. − The electrical conductivity and EMI shielding performance of nanocarbon-containing polymer composites can be enhanced using several strategies, such as controlling the dispersion and distribution of the filler particles in the phases/interface of polymer blends, , introducing cation-π interactions, , controlling the surface conductivity of sandwiched composites, achieving a segregated structure, , and improving the dispersion and distribution of filler particles in nanocomposites with high filler content and foams. , …”