Dual-Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips-Bags for Year-Round Thermal Management

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-04-01 DOI:10.1002/adfm.202425458

Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch

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Abstract

Advanced thermal management is crucial in mitigating the escalating global energy consumption and alleviating associated climatic and environmental issues. Here, a dual-mode film that integrates solar heating and radiative cooling functionalities for year-round thermal management is introduced. The cooling side of the film, composed of PCL-SiO₂ composite nanofibers, exhibits an impressive solar reflection of 0.98 and a mid-infrared emissivity of 0.91, resulting in sub-ambient cooling performance under intensive sunlight. Meanwhile, the heating side of the film, based on the ink side of the upcycled chip bags, efficiently harvests thermal energy from sunlight, leading to a temperature rise of 16.5 °C. The cooling and heating modes of the film can be switched by flipping it. With its outstanding optical properties, weathering durability, and switchable heating and cooling modes, the dual-mode film holds great potential for year-round energy savings with minimal environmental impact due to its sustainable composition and easy fabrication.

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.