Radiative Cooling Nanohybrids with Room-Temperature Switching

被引：1

作者：

Dai, Yuancong ^{[1
]}

Zhang, Yibo ^{[1
]}

Ye, Zhiwei ^{[1
]}

Zhu, Zhenyu ^{[1
]}

Yang, Luhai ^{[1
]}

Wei, Yuhao ^{[1
]}

Qin, Hongmei ^{[1
]}

Xiong, Chuanxi ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2025年 / 17卷 / 08期

基金：

中国国家自然科学基金;

关键词：

radiative cooling; nanohybrids; electrospinning; room-temperature switching; antileakage; NANOPARTICLES;

D O I：

10.1021/acsami.4c22102

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Recent advancements in radiative cooling technologies have highlighted their potential as sustainable and environmentally friendly cooling solutions. However, while this method offers significant energy savings during hot seasons, it may incur energy losses (overcooling leads to a waste of cooling energy) in colder conditions. The current solution has the problems of a complex process or easy leakage of materials. To address this challenge, we synthesized a SiO2 nanohybrid (a SiO2 nanoparticle with elongated polymer chains grafted onto its surface), which modifies the thermoresponsive behavior of radiative cooling composites. Upon incorporation of these nanohybrids into the radiative cooling matrix, it will display significant morphological changes in response to temperature variations, leading to changes in the emissivity of the resulting composite film. What's more, the reflectivity of the composite film was enhanced from 57.26 to 89.37%, increasing the cooling performance by 4 degrees C in hot weather. Results confirmed that the composite film maintained structural integrity without leakage, demonstrating a robust durability. Overall, the synthesized SiO2 nanohybrids in this work will offer valuable insights for advancing radiative cooling applications.

引用

页码：12698 / 12706

页数：9

共 43 条

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