Ti ₂ CCl ₂ /Aramid Nanofiber Composite Aerogels for Thermal Management

Efficient thermal management aerogels are pivotal for next-generation energy storage, electronics, and aerospace applications. Herein, we synthesize Ti 2 CCl 2 /aramid nanofiber (ANF) composite aerogels via a two-step extended-release proton gelation couple with freeze–drying. The resulting lightweight composite aerogels exhibit an ultralow density of 0.0425 g/cm 3 and high porosity (96.38%), concurrently achieving a thermal conductivity of 0.0675 W·m –1 ·K –1 . This combination highlights their dual capability in effective heat management and thermal insulation. Leveraging the intrinsic heat resistance of polyamides, Ti 2 CCl 2 nanosheets, and structure design, the composite aerogels demonstrate high thermal stability (530 °C) and exceptional mechanical strength (536.65 kPa). Notably, the outstanding photothermal conversion capacity of Ti 2 CCl 2 nanosheets enables ultrafast photothermal response, with the surface temperature exceeding 100 °C within 10 s under infrared illumination, signifying strong potential for rapid thermal modulation. This work established a versatile design pathway for multifunctional aerogels in advanced thermal management systems.