Twin-coated skeleton PEDOT: PSS/MXene/para-aramid nanofibers hybrid aerogel with efficient EMI shielding performance and tunable power coefficient

The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from para-aramid nanofibers (p-ANFs), MXene (Ti3C2Tx) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of p-ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/p-ANFs hybrid aerogel with efficient EMI shielding properties. The shielding…