Ultrahigh electromagnetic interference shielding performance of lightweight, flexible, and highly conductive copper-clad carbon fiber nonwoven fabrics

Abstract

Lightweight, flexible, and highly conductive Cu-clad carbon fiber nonwoven fabrics were developed as superior EMI shielding materialsviafacile and controllable wet-laid and electroless technologies.

Electromagnetic Shielding by MXene-Graphene-PVDF Composite with Hydrophobic, Lightweight and Flexible Graphene Coated Fabric

“…Moreover, interconnected MXene and graphene are responsible for electron mobility. The cross-sections of MGNC and MGNOC confirm that the formation of the foam, which is a highly attractive structural requirement for lightweight EMI shielding ( Figure 1 j,k) [ 34 , 35 ]. The cross-sections of MGNC and MGNOC visually confirm the foam structure ( Figure 1 j–l).…”

“…Furthermore, in the polymer foams the voids form due to the different nucleation time of constitutional solid and other external factor like temperature pressure [ 29 ]. Advanced EMI shielding materials should be lightweight, flexible, cost effective, dielectric, and multifunctional, and should possess a tunable absorption, high thermal resistance, intrinsic conductivity, large aspect ratio, high corrosion resistance, and good magnetic and electronic properties [ 19 , 20 , 30 , 31 , 32 , 33 , 34 ].…”

“…Recently, flexible, corrosion resistant, high-density, thin carbon-based materials with satisfactory electrical conductance have become attractive candidates for EMI shielding applications such as in the aerospace, aircraft, automobile, and modern electronics fields. Hence, wet-laid synthetic nonwoven fabrics fulfil these criteria with good EMI shielding [ 34 ]. In addition, carbon-carbon-based composites possess greater EMI shielding effectiveness than carbon-based polymer matrices.…”

“…However, LiF/HCl-based in-situ mild etching is highly preferable owing to the number of steps, level of defects and risk, and the fact that exfoliation can be achieved through manual shaking. However, sonication at low temperature and in inert environments (Ar) is preferable [ 34 ]. MXene thin-films and foams exhibit the highest EMI shielding in the X-band region.…”

“…When electromagnetic radiation hits the surface, it induces electron mobility (ohmic loss). The lightweight foaming materials are attractive candidate over metal-shielding materials as the latter have higher densities which limit the application range in terms of aerospace [ 34 , 35 ].…”