Tailoring Ti₃C₂T_xnanosheets to tune local conductive network as an environmentally friendly material for highly efficient electromagnetic interference shielding

Abstract

Atomic layer tailoring (ALT) the layer thickness of Ti3C2TxMXenes to induce the formation of a local conductive network, as an environmentally friendly material for high-performance EMI shielding.

Ultrathin and Flexible CNTs/MXene/Cellulose Nanofibrils Composite Paper for Electromagnetic Interference Shielding

“…A novel family of 2D early transition metal carbides and/ or nitrides, MXenes (M n+1 X n T x , where M represents an early transition metal, X represents C and/or N, n = 1, 2, or 3, and T is a terminating group, such as O, OH, and/or F), were firstly discovered in 2011 by the selective etching and delamination of their layered MAX phase [15][16][17][18][19]. With large specific surface area and high electrical conductivity [20][21][22][23][24][25], Ti 3 C 2 T x MXene has recently been extensively reported as a remarkable shielding material [26][27][28][29][30][31][32][33][34][35][36][37][38][39]. For example, Gogotsi and his co-workers firstly reported a metallically conductive Ti 3 C 2 T x -based film with excellent conductivity (4665 S cm −1 ) and superior EMI shielding effectiveness (> 92 dB, 45 µm) [3].…”

Broadband microwave absorber constructed by reduced graphene oxide/La0.7Sr0.3MnO3 composites

“…This may arise from the lag of the induced charges to follow the reversing external eld at high frequencies, and nally causes a reduction in the electronic oscillations, indicating a typical form of conduction dominance, which is similar to the results of 2D carbide MXene lms. 28,29 The 3 0 values of rGO/LSMO composites are signicantly smaller than that of rGO (40-80) and LSMO (25)(26)(27)(28)(29)(30)(31)(32), as shown in Fig. S2(a) and S3.…”

Electromagnetic Functions of Patterned 2D Materials for Micro–Nano Devices Covering GHz, THz, and Optical Frequency

“…Crystal and electronic structures of MXenes provide the available physical effects. For example, the conductivity of Ti 3 C 2 T x is thickness‐dependent . When increasing thickness of a Ti 3 C 2 T x sheet, the conductivity rises, thus the surface plasmon intensity .…”

“…Dielectric properties of delaminated Ti 3 C 2 T x nanosheet were studied by Cao's group, as shown in Figure a–d . Due to the competition of conduction loss and polarization loss, ε″ is codetermined by ε c ″ and ε p ″.…”