Spider-Silk-Inspired Nanocomposite Polymers for Durable Daytime Radiative Cooling

doi:10.1002/adma.202208236

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	Spider-Silk-Inspired Nanocomposite Polymers for Durable Daytime Radiative Cooling
	P. C. Yao; Z. P. Chen; T. J. Liu; X. B. Liao; Z. W. Yang; J. L. Li; Y. Jiang; N. Xu; W. Li; B. Zhu and J. Zhu
	2022
发表期刊	Advanced Materials
ISSN	0935-9648
卷号	34 期号:51 页码:8
摘要	Passive daytime radiative cooling (PDRC) materials, that strongly reflect sunlight and emit thermal radiation to outer space, demonstrate great potential in energy-saving for sustainable development. Particularly, polymer-based PDRC materials, with advantages of easy-processing, low cost, and outstanding cooling performance, have attracted intense attention. However, just like other polymer devices (for example polymer solar cells) working under sunlight, the issue of durability related to mechanical and UV properties needs to be addressed for large-scale practical applications. Here, a spider-silk-inspired design of nanocomposite polymers with potassium titanate (K2Ti6O13) nanofiber dopants is proposed for enhancing the durability without compromising their cooling performance. The formed tough interface of nanofiber/polymer effectively disperses stress, enhancing the mechanical properties of the polymer matrix; while the K2Ti6O13 can absorb high-energy UV photons and transform them into less harmful heat, thereby improving the UV stabilities. Taking poly(ethylene oxide) radiative cooler as an example for demonstration, its Young's modulus and UV resistance increase by 7 and 12 times, respectively. Consequently, the solar reflectance of nanocomposite poly(ethylene oxide) is maintained as constant in a continuous aging test for 720 h under outdoor sunlight. The work provides a general strategy to simultaneously enhance both the mechanical stability and the UV durability of polymer-based PDRC materials toward large-scale applications.
DOI	10.1002/adma.202208236
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67107
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	P. C. Yao,Z. P. Chen,T. J. Liu,et al. Spider-Silk-Inspired Nanocomposite Polymers for Durable Daytime Radiative Cooling[J]. Advanced Materials,2022,34(51):8.
APA	P. C. Yao.,Z. P. Chen.,T. J. Liu.,X. B. Liao.,Z. W. Yang.,...&B. Zhu and J. Zhu.(2022).Spider-Silk-Inspired Nanocomposite Polymers for Durable Daytime Radiative Cooling.Advanced Materials,34(51),8.
MLA	P. C. Yao,et al."Spider-Silk-Inspired Nanocomposite Polymers for Durable Daytime Radiative Cooling".Advanced Materials 34.51(2022):8.

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