Processing and Characterization of MXenes and Their Nanocomposites

Ti3C2Tx MXene/Fe3O4/Carbon Fiber Fabric/Water Polyurethane Composite Fabrics for Electromagnetic Interference Shielding and Thermal Management

“…The emerging MXene, a two-dimensional transition metal carbide/nitride, has garnered considerable interest in the realm of EMI shielding owing to its exceptional conductivity and distinctive layered structure. − By selectively etching the Al atomic layers of the MAX precursor, − large-sized MXene nanosheets with an abundance of polar functional groups were prepared. The inherent defects and surface chemical interactions of MXene promote the amplification of polarization loss, and the carbon vacancies in MXene contribute to its outstanding conductivity and flexibility, as shown by density functional theory (DFT) simulations, resulting in outstanding EMI shielding performance. − For example, Zhao et al used a one-step vacuum-assisted filtration method to fabricate liquid metals reinforced cellulose nanofiber (CNF)/MXene (LMs-CNF/MXene) composite films due to the excellent conductivity of MXene, and the shielding effectiveness of the composite films can reach 51.9 dB at ∼27 μm.…”