Abstract
Passive radiative cooling technology could effectively reduce global energy consumption and maintain the global ecological balance. It plays an important role in human thermal management. Here, we proposed a facile, low-cost, and scalable approach for fabricating a hierarchical-morphology fiber membrane with excellent radiative cooling performance. The multilayer fiber membrane was comprised of Polyvinylidene fluoride/Silica (PVDF/SiO2) fiber membrane and Polytetrafluoroethylene (PTFE) clothing film. We demonstrated that the 30% PVDF/SiO2-PTFE fiber membrane (PFM) can achieve radiative cooling up to 9.2 °C lower than that of the bare simulated human skin under a clear sky. The hierarchical-morphology fiber membrane is effective for energy-saving personal thermal management by combining sky radiative cooling and paves a sustainable way for passive radiative cooling textiles, smart clothing and intelligent fabrics.
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