ABSTRACT
This chapter reviews the advancements in coating-based materials for EMI shielding application. The constant progress in polymer nanocomposites with different fillers shows a way toward high shielding efficiency. Metal enclosures were the prevalent choice as a shield material in the past due to their excellent charge carrying capacity. But their heavy weight and cumbersome processability, rigid nature, and proneness to corrosion limit their utilization. Intrinsically conducting polymers are promising materials for electromagnetic attenuation due to their relatively higher electrical conductivity and dielectric loss than the other insulating polymers. Polypyrrole-coated polyester fabrics were also investigated extensively for EMI shielding application. The excessive cost of carbon nanotubes (CNT) has forced researchers to find a solution with lower-cost technological requirements. The discovery of graphene sheets has shed light in this regard, and these sheets are slowly replacing CNTs due to their potential properties.
