(141d) Ultrathin and Flexible Mxene-Based Magnetic Janus Film for High Performance Electromagnetic Shielding

In this study, we have successfully developed a novel ultrathin and flexible MXene-coated Nickel film using a simple one-step synthesis method for the advancement of high-performance electromagnetic shielding materials. Through this process, Nickel particles are synthesized and uniformly deposited onto one side of the MXene surface, enhancing the magnetic properties of the resulting films. The distribution of Nickel coating can be precisely controlled by adjusting the reaction time. The resultant thin films exhibit exceptional electromagnetic interference (EMI) shielding performance within the X-band frequency range, significantly enhancing both the absorption characteristics of the MXene film and the overall EMI shielding effectiveness. Specifically, the Janus MXene film demonstrates an EMI SE of 79 dB, 89 dB, and 106 dB for thicknesses of 15 µm, 25 µm, and 35 µm, respectively. Importantly, at equivalent thicknesses, the non-magnetic film exhibits EMI SE values of 71 dB, 80 dB, and 91 dB, respectively. This research introduces a compelling strategy to enhance shielding performance, thereby providing a promising avenue for the development of advanced EMI shielding materials.