Multifunctional Integrated Transparent Film for Efficient Electromagnetic Protection

Abstract

Silver nanowire (Ag NW) has been considered as the promising building block for the fabrication of transparent electromagnetic interference (EMI) shielding films. However, the practical application of Ag NW-based EMI shielding films has been restricted due to the unsatisfactory stability of Ag NW. Herein, we proposed a reduced graphene oxide (rGO) decorated Ag NW film, which realizes a seamless integration of optical transparency, highly efficient EMI shielding, reliable durability and stability. The Ag NW constructs a highly transparent and conductive network, and the rGO provides additional conductive path, showing a superior EMI shielding effectiveness (SE) of 33.62 dB at transmittance of 81.9%. In addition, the top rGO layer enables the hybrid film with reliable durability and chemical stability, which can maintain 96% and 90% EMI SE after 1000 times bending cycles at radius of 2 mm and exposure in air for 80 days. Furthermore, the rGO/Ag NW films also possess fast thermal response and heating stability, making them highly applicable in wearable devices. The synergy of Ag NW and rGO grants the hybrid EMI shielding film multiple desired functions and meanwhile overcomes the shortcomings of Ag NW. This work provides a reference for preparing multifunctional integrated transparent EMI shielding film.

Macroscopic Electromagnetic Cooperative Network-Enhanced MXene/Ni Chains Aerogel-Based Microwave Absorber with Ultra-Low Matching Thickness

“…The increasing electromagnetic wave (EMW) interference radiation and pollution is severely threatening human health and affecting electronic instruments. In view of this situation, various traditional EMW absorbers, including graphene, carbon nanotubes, ferrite and silicon carbide, have been synthesized to address these issues [ 1 – 6 ]. Despite decent EMW, absorption performance has been obtained for the traditional EMW absorbers, and there are still some shortcomings, such as high filling ratio, high matching thickness and narrow effective bandwidth (EBW), which impedes their practical applications [ 7 ].…”

Ultralight and hyperelastic SiC nanofiber aerogel spring for personal thermal energy regulation

“…As for textiles woven from metal fibers [30][31][32], the high thermal conductivity of metals limits their application in high-temperature environments. As we know, SiC has superior electromagnetic characteristics [33][34][35], excellent optical, electronic, and thermal properties, low cost, high hardness, good stability, and environmental friendliness [36]. However, SiC nanoparticles and nanosheets are prone to agglomeration, which have certain limitations in practical applications.…”

Magnetic Carbon Composites Derived from Coal Hydrogasification Residue for Microwave Absorption

“…Therefore, it is necessary to find an easy-obtained carbon material to replace these aforementioned expensive carbon matrices for mass-produce MAMs, and further meet the practical application. [13][14][15][16] Semicoke (SC), a type of coal hydrogasification residue, is a kind of by-product in the process of converting coal into liquid and gaseous fuels, including the main components of carbon, ash, and some volatile substances. [17,18] The emission of SC rapidly increases with the continuous expansion scale of coal hydrogasification production.…”

“…Therefore, it is necessary to find an easy‐obtained carbon material to replace these aforementioned expensive carbon matrices for mass‐produce MAMs, and further meet the practical application. [ 13–16 ]…”