Self-adaptive and large-area sprayable thermal management coatings for energy saving
作者：Peng Zhou1,Guangyang Jiang2 ,Yuyan Wang3,Yongqiang Tian2 & Xinxing Zhang 1
關(guān)鍵字：Self-adaptive,Energy saving
論文來(lái)源：期刊
發(fā)表時(shí)間：2025年
Self-adaptive thermal management over large areas is highly attractive since
single-mode radiative cooling materials lead to undesired overcooling. How-
ever, it remains a challenge that dual-mode switchable materials require arti-
?cial stimuli or additional energy for switching between heating and cooling
modes. Here, different from dual-modeswitching materials driven by arti?cial
stimuli or additional energy, we proposean autonomously self-adaptive dual-
modal coating with assembled micro-heterostructures that can engender the
multistage scattering of incident light. The resultant coating demonstrates
92% solar re?ectivity and 93% emissivity in hot condition. More signi?cantly,
the coating reaches 60% visible light optical modulation, which is attributed to
the formation and disruption of the conjugation region in the chromogenic
molecules, to prevent overcooling in cold condition. A thermal-switchable
fabric is further fabricated via large-area spraying processes, demonstrating
2.5 °C warmer in cold condition and 8.7 °C cooler in hot condition compared to
white samples. The coating highlights the importance of the large-scale
manufacturing of temperature-adaptive materials, providing insights into the
application of dynamic radiative cooling in garment, camping, building and
other ?elds.