Robust Ti3C2Tx/RGO/ANFs hybrid aerogel with outstanding electromagnetic shielding performance and compression resilience

Abstract

In this contribution, we demonstrated an efficient approach for constructing conductive aramid nanofibers based porous architectures by graphene oxide and Ti3C2Tx via freeze drying and subsequent thermal reduction. Specifically, the aramid nanofibers laid the foundation for mechanical enhancement and good electrical conductivity of Ti3C2Tx and RGO ensured outstanding electromagnetic shielding ability. The resultant Ti3C2Tx/RGO/ANFs hybrid aerogel presented a spongy structure, which was conducive to the dissipation of incident electromagnetic waves through multiple reflection and scattering. The electromagnetic shielding efficiency reached 54.8 dB in X-band (8.2–12.4 GHz) with 25 wt% loading content of Ti3C2Tx. When the addition amount of Ti3C2Tx was 5 wt%, the optimum compressive stress of Ti3C2Tx/RGO/ANFs hybrid aerogel reached 200 kPa under 70% strain with a relatively low density of 0.062 g/cm3. This work provided a feasible approach to fabricate robust hybrid aerogel with excellent electromagnetic shielding performance and compression resilience.