Multifunctional Thermo‐Electronic Smart Fabrics Integrating Radiative Cooling and Energy Harvesting for Self‐Powered Intelligent Perception

Wearable smart fabrics with integrated thermal regulation and energy autonomy represent a transformative advancement in next‐generation wearable technologies. However, achieving synergistic multifunctionality with a signal platform remains a significant challenge. Herein, we present a multifunctional thermal management and self‐powered smart fabric (TMSPF) that seamlessly integrates passive radiative cooling (PRC) and triboelectric nanogenerators (TENGs) through a rationally designed functional architecture. The unique all‐fiber structure enables TMSPF good breathability and self‐cleaning properties, thereby providing a dry and comfortable microenvironment for the wearer. Notably, benefiting from the excellent dielectric properties of BaTiO 3 and interconnected porous fiber architecture, the TMSPF achieves excellent PRC capability (a maximum cooling temperature of ∼18.9°C under direct sunlight and a maximum cooling power of 105.9 W m −2 at daytime), as well as enhanced triboelectric output (170 V, 977 mW m −2 ) and high sensitivity (88.72 V kPa −1 ), enabling applications in power supply and intelligent perception. Moreover, TMSPF demonstrates broad application prospects in personal thermal management and raindrop energy harvesting. This synergistic integration effectively addresses the intrinsic trade‐off between energy harvesting and thermal comfort in conventional wearables. This work provides valuable insights into the design and fabrication of next‐generation wearable electronics with integrated thermal and energy functionalities.