Unprecedented Electromagnetic Interference Shielding from Three-Dimensional Bi-continuous Nanoporous Graphene

Abstract

Bi-continuous nanoporous graphene synergistically provides high conductivity and high electromagnetic interference (EMI) shielding capability at a minimal sample thickness. This nanoarchitecture takes advantage of abundant wavereflecting and-absorbing interfaces from nano-sized pores and atomically thin graphene walls, giving rise to superb specific EMI-shielding performances. The scalable nanoporous graphene well reserves the EMI-shielding effectiveness under external stretching and shows great promise for applications in aerospace, personal protection, and modern flexible electronics.

Building 3D Architecture in 2D Thin Film for Effective EMI Shielding

“…In this issue of Matter, Chen and coworkers 7 devised a novel strategy to combine the extremely thin film with highly porous foam by creating 3D nanoscale porosity in a 2D thin film of graphene ( Figure 1A). Such a unique porous architecture has multifold advantages over previously reported compact thin films or porous foams.…”

“…(F) EMI SE of porous graphene-PDMS composite film under different uniaxial tensile strains. Reprinted with permission from Kashani et al7…”

3D Continuously Porous Graphene for Energy Applications

“…After the years of development, the sterically continuous nanoporous graphene has arisen as a unique category of 3D graphene materials and received increasing attention for applications in energy conversion and storage, transistors, photodetectors, plasmonics, electromagnetic interference shielding, etc. [26][27][28][29][30][31][32][33][34][35][36][37] Although 3D graphene has been widely reviewed by many articles from various aspects in the last decade, [9][10][11][12][13][14][15][16][17][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] there are few articles devoted to 3D continuously porous graphene, despite the fact that it is a distinct class of 3D graphene with numerous unique and extraordinary properties. Herein, we aim to provide a comprehensive review of 3D continuously porous graphene and its applications in energy conversion and storage.…”

In-situ deposition of three-dimensional graphene on selective laser melted copper scaffolds for high performance applications

“…However, most of the porous metal templates prepared by conventional methods have difficulty preciously regulating porosity, for instance, the commercial Ni foam generally changes the porosity by roughly controlled foaming agent content, the subsequently obtained 3DG shows poor control of macroscopic and microscopic features for specific functional design [17,18]. Hence, it is of necessity to develop metal templates, which can be precisely manipulated from macro to micro aspects to achieve 3DG with tunable structures and stable performances [19].…”

“…While Ni has a higher carbon solubility (>0.1 at. %) [17], thick graphene films tend to form because of excessive carbon precipitation [24]. However, research in SLM of pure copper is still in its infancy because of insufficient heating for powders melting derived from its intrinsic high thermal conductivity and reflectivity towards common laser wavelength (1000-1100 nm).…”