Journal
CELL REPORTS PHYSICAL SCIENCE
Volume 3, Issue 4, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.xcrp.2022.100815
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Funding
- National Natural Science Foundation of China [11874284, 21777116]
- National Key Research and Development Program of China [2017YFA0204600, 2018YFC1803100]
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities
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Inspired by the thermal management system of antifreeze beetles, researchers have designed a composite film that enhances the loading capacity and latent heat of organic phase change materials. This film, with its thermal insulation and thermal energy storage properties, can maintain a comfortable temperature range for more than 800 seconds.
To survive extreme weather, antifreeze beetles have a smart thermal management system, which relies on light absorption by the black surface and energy storage by antifreeze proteins. Inspired by the energy storage behavior of antifreeze proteins, we design a composite film, which is fabricated via impregnation of organic phase change material (PCM) in a surface-modified MXene/bacterial-cellulose aerogel. The resulting composite aerogel-based PCM film shows an increased loading capacity of organic PCM, increased phase change latent heat, and enhanced mechanical properties. Combining these thermal insulation and thermal energy storage properties, a submillimeter-thick film with an aerogel layer can maintain a comfortable temperature range for more than 800 s. This is more than double compared to the system without the films, and is a proof of concept for bioinspired photothermal-conversion/ thermal-storage integration.
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