Advancing thermal comfort: an innovative SiO2 microsphere-decorated shish-kebab film composite for enhanced personal cooling

Advanced Nanocomposites Pub Date : 2024-01-01 DOI:10.1016/j.adna.2024.02.001

Rui Yang , Fengsen Xie , Yingnuo Li , Xiaolong Wang , Yamin Pan , Chuntai Liu , Changyu Shen , Xianhu Liu

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Abstract

Due to the energy crisis and global warming, personal passive radiative cooling has gained increasingly more attention. However, the development of radiative cooling films with high performance and durability is still facing crucial challenges. Herein, a SiO₂ microspheres-decorated shish-kebab film composite (SSKFC) has been developed in this work by a spraying technique, which not only has high emissivity within the atmospheric window (8–13 μm), but also possesses transparency in the remaining mid-infrared band and high reflectivity towards solar radiation (0.3–2.5 μm). As a result, SSKFC is capable of achieving effective personal radiative cooling both outdoors (under different weather) and indoors (lowering the temperature by ∼ 4.1 °C compared to the cotton). Additionally, the film design shows excellent superhydrophobicity under various solvents. Given the spectral selectivity, personal cooling performance and self-cleaning property, SSKFC present substantial advantages for personal thermal management.

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提升热舒适度：用于增强个人散热的创新型二氧化硅微球装饰什刹海薄膜复合材料

由于能源危机和全球变暖，个人被动辐射制冷越来越受到人们的关注。然而，具有高性能和耐久性的辐射冷却薄膜的开发仍然面临着严峻的挑战。本研究采用喷涂技术开发了一种二氧化硅微球装饰的 "刹那 "薄膜复合材料（SSKFC），它不仅在大气窗口（8-13 μm）内具有高发射率，而且在剩余的中红外波段具有透明度，对太阳辐射（0.3-2.5 μm）具有高反射率。因此，SSKFC 能够在室外（不同天气条件下）和室内（与棉花相比，温度可降低 4.1 °C）实现有效的个人辐射冷却。此外，该薄膜设计在各种溶剂下都表现出优异的超疏水性能。考虑到光谱选择性、个人冷却性能和自清洁特性，SSKFC 在个人热管理方面具有很大的优势。

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Advanced Nanocomposites

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