Ultrahigh Conductive MXene Films for Broadband Electromagnetic Interference Shielding

Abstract Broadband and ultrathin electromagnetic interference (EMI)‐shielding materials are crucial for efficient high‐frequency data transmission in emerging technologies. MXenes are renowned for their outstanding electrical conductivity and EMI‐shielding capability. While substituting nitrogen (N) for carbon (C) atoms in the conventional MXene structure is theoretically expected to enhance these properties, synthesis challenges have hindered progress. Here, it is demonstrated that Ti x C y N x ‐ y ‐1 T z MXene films with optimized N content achieve a record‐high electrical conductivity of 35 000 S cm −1 and exceptional broadband EMI shielding across the X (8–12.4 GHz), K a (26.5–40 GHz), and W (75–110 GHz)…

• NR
  National Research Foundation