气候变化领域集成服务门户(CCPortal): A structural polymer for highly efficient all-day passive radiative cooling

CCPortal

DOI	10.1038/s41467-020-20646-7
	A structural polymer for highly efficient all-day passive radiative cooling
	Wang T.; Wu Y.; Shi L.; Hu X.; Chen M.; Wu L.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	All-day passive radiative cooling has recently attracted tremendous interest by reflecting sunlight and radiating heat to the ultracold outer space. While some progress has been made, it still remains big challenge in fabricating highly efficient and low-cost radiative coolers for all-day and all-climates. Herein, we report a hierarchically structured polymethyl methacrylate (PMMA) film with a micropore array combined with random nanopores for highly efficient day- and nighttime passive radiative cooling. This hierarchically porous array PMMA film exhibits sufficiently high solar reflectance (0.95) and superior longwave infrared thermal emittance (0.98) and realizes subambient cooling of ~8.2 °C during the night and ~6.0 °C to ~8.9 °C during midday with an average cooling power of ~85 W/m2 under solar intensity of ~900 W/m2, and promisingly ~5.5 °C even under solar intensity of ~930 W/m2 and relative humidity of ~64% in hot and moist climate. The micropores and nanopores in the polymer film play crucial roles in enhancing the solar reflectance and thermal emittance. © 2021, The Author(s).
语种	英语
scopus关键词	poly(methyl methacrylate); Article; circadian rhythm; cooling; Fourier transform infrared spectroscopy; heat; humidity; infrared radiation; night; scanning electron microscopy; solar energy; sunlight
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250788
作者单位	Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
推荐引用方式 GB/T 7714	Wang T.,Wu Y.,Shi L.,et al. A structural polymer for highly efficient all-day passive radiative cooling[J],2021,12(1).
APA	Wang T.,Wu Y.,Shi L.,Hu X.,Chen M.,&Wu L..(2021).A structural polymer for highly efficient all-day passive radiative cooling.Nature Communications,12(1).
MLA	Wang T.,et al."A structural polymer for highly efficient all-day passive radiative cooling".Nature Communications 12.1(2021).