Facile fabrication of a multi-functional bifacial membrane with simultaneously enhanced electromagnetic interference shielding and infrared stealth performance

Abstract

Traditional materials with single electromagnetic interference (EMI) shielding performance have not satisfied the demand of rapidly developed information and communication technology, which spawns the development of novel materials with higher efficiency and more functionality. However, it is quite difficult to strike a good balance between EMI shielding performance and other functions, such as infrared stealth, which extremely limits the further application, especially in the special or extreme condition. Herein, a novel functional membrane with bifacial architecture was fabricated via the facile solution strategy, which was constructed by the in-situ generation and unidirectional growth Ag nanoparticles and selectively enrichment of Ti₃C₂T_x sheets on upside and backside of the membrane, respectively. The composite membrane possessed the excellent antibacterial and EMI shielding performance, with the distinctive bifacial wettability and conductivity. Furthermore, the incorporation of Ti₃C₂T_x effectively reduced the infrared emissivity and endowed the membrane with the infrared stealth performance, providing the novel strategy for constructing multi-functional materials with required structure, showing broad application prospects in the military field.