Pushing electromagnetic interference shielding self-enhanced based on smart Ti₃C₂T_x-WVO₂ thermal management composite

Aerogel materials have shown tremendous vistas in electromagnetic interference (EMI) of intelligentized electronics and armaments. However, it is challenging to simultaneously achieve self-enhanced shielding performance and release the accumulation thermal. Herein, an intelligent tunable shielding composite was demonstrated through synergistic dynamic interactions between Ti₃C₂T_x and tungsten doped VO₂ (WVO₂), tactfully transforming the accumulation thermal energy to superiority for enhanced shielding. Additionally, the performances of meticulously engineered Ti₃C₂T_x-WVO₂ composite from thermal conversion to enhanced electromagnetic shielding have been hierarchically dissected. The composite possessed highly sensitive and dynamically tunable shielding performance (ΔSE = 13.9 dB, X-band = 8–12 GHz) and high-efficiency thermal management characteristic by virtue of three-dimensional porous Ti₃C₂T_x skeleton, the phase transition of WVO₂ and energy transformation between Ti₃C₂T_x and WVO₂. Furthermore, the composite provides excellent shielding performance (EMI SE = 42.8 dB). Therefore, this Ti₃C₂T_x-WVO₂ composite can be a potential candidate in both EMI shielding and tunable shielding fields.