Recent Advances in Spectrally Selective Daytime Radiative Cooling Materials

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-05-20 DOI:10.1007/s40820-025-01771-8

An-Quan Xie, Hui Qiu, Wangkai Jiang, Yu Wang, Shichao Niu, Ke-Qin Zhang, Ghim Wei Ho, Xiao-Qiao Wang

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Abstract

Daytime radiative cooling is an eco-friendly and passive cooling technology that operates without external energy input. Materials designed for this purpose are engineered to possess high reflectivity in the solar spectrum and high emissivity within the atmospheric transmission window. Unlike broadband-emissive daytime radiative cooling materials, spectrally selective daytime radiative cooling (SSDRC) materials exhibit predominant mid-infrared emission in the atmospheric transmission window. This selective mid-infrared emission suppresses thermal radiation absorption beyond the atmospheric transmission window range, thereby improving the net cooling power of daytime radiative cooling. This review elucidates the fundamental characteristics of SSDRC materials, including their molecular structures, micro- and nanostructures, optical properties, and thermodynamic principles. It also provides a comprehensive overview of the design and fabrication of SSDRC materials in three typical forms, i.e., fibrous materials, membranes, and particle coatings, highlighting their respective cooling mechanisms and performance. Furthermore, the practical applications of SSDRC in personal thermal management, outdoor building cooling, and energy harvesting are summarized. Finally, the challenges and prospects are discussed to guide researchers in advancing SSDRC materials.

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光谱选择性日间辐射冷却材料的研究进展

日间辐射冷却是一种环保的被动冷却技术，无需外部能量输入即可运行。为此目的设计的材料在太阳光谱中具有高反射率，在大气透射窗口内具有高发射率。与宽带日间辐射冷却材料不同，光谱选择性日间辐射冷却（SSDRC）材料在大气透射窗口中表现出主要的中红外发射。这种选择性中红外发射抑制了大气透射窗范围以外的热辐射吸收，从而提高了白天辐射冷却的净冷却功率。本文综述了SSDRC材料的基本特性，包括分子结构、微纳米结构、光学性质和热力学原理。它还提供了三种典型形式的SSDRC材料的设计和制造的全面概述，即纤维材料，膜和颗粒涂层，突出了各自的冷却机制和性能。总结了SSDRC在个人热管理、室外建筑制冷和能量收集等方面的实际应用。最后，讨论了挑战和前景，以指导研究人员推进SSDRC材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.