Structural evolution of MXenes and their composites for electromagnetic interference shielding applications

Abstract

Nowadays, the extensive utilization of electronic devices and equipment inevitably leads to the severe electromagnetic interference (EMI) issues. Therefore, EMI shielding materials have drawn considerable attention, and great effort has...

Flexible Sandwich-Structured Co–Ni Alloy-Coated Basalt Fabrics via the Writing–Grafting–Activation–Deposition Process for Electromagnetic Interference Shielding and Electrothermal Conversion

“…As shown in Figure , when incident EMWs arrive at the surface of a BFL x SM y sample, some EMWs are immediately reflected back due to abundant mobile charge carriers in the Co–Ni layer and an impedance mismatching characteristic between the Co–Ni surface and free space. The remaining waves will be further dissipated through the BFL x SM y sample, resulting in attenuation of the EM wave by means of repeating absorption and reflection . Herein, efficient sandwich structural design of the external Co–Ni layer, BF sandwich substrate, and interfacial interactions, as well as porous structure, is significant to synergistically enhance the local absorption and multiple reflections of BFL x SM y samples.…”

“…The remaining waves will be further dissipated through the BFL x SM y sample, resulting in attenuation of the EM wave by means of repeating absorption and reflection. 44 Herein, efficient sandwich structural design of the external Co−Ni layer, BF sandwich substrate, and interfacial interactions, as well as porous structure, is significant to synergistically enhance the local absorption and multiple reflections of BFL x SM y samples. According to the Maxwell−Wagner principle, obvious conductivity mismatch will cause a polarization and charge accumulation at the interfaces.…”

MXene-Based Nucleic Acid Biosensors for Agricultural and Food Systems

“…Typically, concentrated aqueous HF solution (50%) is mixed with MAX phase powder at room temperature for several hours ( Figure 2 (Aa)) [ 24 ]. During this, the A layer is selectively removed by the strong acid solution, releasing hydrogen gas (H 2 ) [ 25 ]. Concomitantly, other functional groups including -F, -OH, and =O are present on the surface of the remaining structure by van der Waals bonds [ 26 ].…”

Headway towards contemporary 2D MXene-based hybrid electrodes for alkali-ion batteries

“…36 Ultra-thin, flexible MXene-based materials can be utilised for electromagnetic interference (EMI) shielding, owing to their exceptional conductivity, lightweight nature, easy producibility, as well as large surface area. 38 Apart from these applications, they are employed in supercapacitors because they have extraordinary physical and electrochemical characteristics and their composition can be tuned accordingly. 39 Interestingly, MXenebased hybrid materials are used as photocatalysts as they might enable quick photoinduced separation of charge carriers in photocatalytic activity and offer many surface functionalities for materials used for light-harvesting, ensuring the possibility of achieving high photoconversion efficiencies.…”

“…Ultra-thin, flexible MXene based materials can be utilised for electromagnetic interference (EMI) shielding, owing to their exceptional conductivity, lightweight nature, easy producibility as well as large surface area [38]. Apart from these applications, they are employed in supercapacitors as they have extraordinary physical and electrochemical characteristics and their composition can be tuned accordingly [39].…”