Ultrabreathable Open-Cell Hierarchical Pore Structure for Radiative Cooling Protective Membranes

作者：Bin Liu, Renyan Zhang, Tao Yu, Dan Cai, Yidan Gong, Yingeng Wang, Yingjie Wu, Li Xiong, Mingbo Pu, Xiaoliang Ma, Xiangang Luo · 发表于：ACS Applied Materials & Interfaces · 年份：2025 · DOI：10.1021/acsami.5c01129 · 被引用次数：10 · 研究领域：Thermal Radiation and Cooling Technologies、Quantum Electrodynamics and Casimir Effect、Urban Heat Island Mitigation

Personal protective clothing is essential in biochemical threat environments, however balancing protection, thermal comfort, and breathability remains a significant challenge. This work introduces a novel, skin-friendly ultrabreathable radiative cooling protective membrane (Ub-RCPM), which is developed via a one-step evaporation-induced pore formation process. The sequential evaporation of solvent and nonsolvent during the process endows an ultrabreathable open-cell hierarchical pore structure. By adjusting the open-cell size, Ub-RCPM simultaneously offers high protection, moisture permeability, and passive radiative cooling. The hierarchical pore structure demonstrates a sunlight reflectivity of 94.79% and an infrared emissivity of 94.53% through the infrared atmospheric window, which enables efficient passive cooling. Its open-cell structure enables a water vapor transmission rate of 8904.59 g m –2 day –1, 3.5 times higher than that of commercial protection clothing. Additionally, the submicron pores provide a filtration efficiency of 99.1% for 75 nm aerosols. The combination of radiative cooling and ultrahigh breathability enables Ub-RCPM to a temperature lower than commercial protective clothing by 9.6–16.5 °C in real-world conditions. This presents a groundbreaking approach for the design of future thermal comfortable personal protective clothing.