首页|A utility and easily fabricated dual-mode fiber film for efficient and comfortable thermal management
A utility and easily fabricated dual-mode fiber film for efficient and comfortable thermal management
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Nowadays,the global climate is constantly being destroyed and the fluctuations in ambient temperature are becoming more frequent.However,conventional single-mode thermal management strategies(heat-ing or cooling)failed to resolve such dynamic temperature changes.Moreover,developing thermal man-agement devices capable of accommodating these temperature variations while remaining simple to fabricate and durable has remained a formidable obstacle.To address these bottlenecks,we design and successfully fabricate a novel dual-mode hierarchical(DMH)composite film featuring a micro-nanofiber network structure,achieved through a straightforward two-step continuous electrospinning process.In cooling mode,it presents a high solar reflectivity of up to 97.7％and an excellent atmospheric transparent window(ATW)infrared emissivity of up to 98.9％.Noted that this DMH film could realize a cooling of 8.1 ℃ compared to the ambient temperature outdoors.In heating mode,it also exhibits a high solar absorptivity of 94.7％and heats up to 11.9 ℃ higher than black cotton fabric when utilized by indi-viduals.In practical application scenarios,a seamless transition between efficient cooling and heating is achieved by simply flipping the film.More importantly,the DMH film combining the benefits of compos-ites demonstrates portability,durability,and easy-cleaning,promising to achieve large-scale production and use of thermally managed textiles in the future.The energy savings offered by film applications pro-vide a viable solution for the early realization of carbon neutrality.
NETL
NSTL
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