Hierarchically structured passive radiative cooling ceramic with high solar reflectivity

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2023-11-09 DOI:10.1126/science.adi4725

Kaixin Lin, Siru Chen, Yijun Zeng, Tsz Chung Ho, Yihao Zhu, Xiong Wang, Fayu Liu, Baoling Huang, Christopher Yu-Hang Chao, Zuankai Wang, Chi Yan Tso

引用次数: 0

Abstract

Passive radiative cooling using nanophotonic structures is limited by its high cost and poor compatibility with existing end uses, whereas polymeric photonic alternatives lack weather resistance and effective solar reflection. We developed a cellular ceramic that can achieve highly efficient light scattering and a near-perfect solar reflectivity of 99.6%. These qualities, coupled with high thermal emissivity, allow the ceramic to provide continuous subambient cooling in an outdoor setting with a cooling power of >130 watts per square meter at noon, demonstrating energy-saving potential on a worldwide scale. The color, weather resistance, mechanical robustness, and ability to depress the Leidenfrost effect are key features ensuring the durable and versatile nature of the cooling ceramic, thereby facilitating its commercialization in various applications, particularly building construction.

查看原文本刊更多论文

具有高太阳反射率的分级结构被动辐射冷却陶瓷。

使用纳米光子结构的被动辐射冷却由于其高成本和与现有最终用途的兼容性差而受到限制，而聚合物光子替代品缺乏耐候性和有效的太阳反射。我们开发了一种蜂窝陶瓷，它可以实现高效的光散射和99.6%的近乎完美的太阳反射率。这些品质加上高的热发射率，使陶瓷能够在户外环境中提供连续的亚环境冷却，中午的冷却功率超过130瓦/平方米，在全球范围内展示了节能潜力。颜色、耐候性、机械坚固性和抑制Leidenfrost效应的能力是确保冷却陶瓷耐用和通用性的关键特征，从而促进了其在各种应用中的商业化，特别是在建筑施工中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

期刊介绍： Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.