Synchronous deprotonation–protonation for mechanically robust chitin/aramid nanofibers conductive aerogel with excellent pressure sensing, thermal management, and electromagnetic interference shielding

Scalable Production of Highly Conductive 2D NbSe2 Monolayers with Superior Electromagnetic Interference Shielding Performance

“…Intriguingly, the 48 μm thick annealed NbSe 2 film shows an extremely high EMI SE of 113 dB across the X-band, superior to most of the EMI shielding materials at comparable thickness reported in the literature (Figure e and Table S3). ,,,− The power coefficients of reflectivity ( R ), absorptivity ( A ), and transmissivity ( T ) calculated from the measured scattering parameters (Table S4) suggest that reflection contributes to the majority (>95%) of the shielding performance for the annealed NbSe 2 films. This reflection-dominated shielding mechanism of annealed NbSe 2 films is reasonable because of its high electrical conductivity and thus large impedance mismatch with free space.…”

High-Compressive, Elastic, and Wearable Cellulose Nanofiber-Based Carbon Aerogels for Efficient Electromagnetic Interference Shielding

“…In our contemporary society, electronic devices are widely used in human daily life, which inevitably leads to severe electromagnetic (EM) pollution and is harmful to people’s health. − Further, the extra EM radiation will also interfere with the normal operation of electronic devices, resulting in potential security issues and lowering their work efficiency. To effectively alleviate this dilemma, developing electromagnetic interference (EMI) shielding materials that can block EM waves by reflection and absorption is of great necessity. − Traditional conductive metals are usually used as EMI shielding materials due to their excellent conductivity. However, intrinsic heavy weight, susceptiblity to corrosion in harsh environments, and the reflection-dominated electromagnetic shielding effectiveness (easy to cause secondary pollution) greatly hinder their applications in mobile and wearable devices. − Besides this, magnetic metal or metal oxides/carbon composites derived from metal organic frameworks (MOFs), conductive polymer composites (CPCs), transition metal carbide/carbonitride (MXene) nanosheets, or their composites have also been promising candidates for advanced EMI shielding materials. ,, However, most of these materials cannot simultaneously meet the requirements of high EMI shielding performances, high mechanical properties, flexibility, and versatility.…”

“…13−16 Besides this, magnetic metal or metal oxides/carbon composites derived from metal organic frameworks (MOFs), conductive polymer composites (CPCs), 17 transition metal carbide/carbonitride (MXene) nanosheets, or their composites have also been promising candidates for advanced EMI shielding materials. 8,10,18 However, most of these materials cannot simultaneously meet the requirements of high EMI shielding performances, high mechanical properties, flexibility, and versatility.…”

Highly Stretchable Liquid-Metal/Elastomeric Foam Based on a Slidable Double Network for Absorption-Dominated Electromagnetic Interference Shielding

“…This reflection-dominated EMI will inevitably cause secondary electromagnetic pollution and pose a threat to other electronic devices and components. − Moreover, metals are mostly heavy, expensive, rigid, and difficult to process. Conductive fillers including metallic nanowires and nanoparticles, − carbon-based materials (e.g., graphene, carbon fibers, and carbon nanotubes), ,, and 2D transition-metal carbides ,, are recently popular candidates for the construction of EMI shielding materials due to their lightweight, high electrical conductivity, and fair dielectric properties. − The challenge is to use low concentration of conductive fillers without sacrificing the overall electrical conductivity and the EMI SE, since high filler loadings may greatly affect the mechanical properties of the final products. Another drawback of conductive filler-based EMI shielding material is the restricted stretchability.…”