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外文期刊>Advanced Sustainable Systems
>Low‐Cost, Scalable, and Reusable Photothermal Layers for Highly Efficient Solar Steam Generation and Versatile Energy Conversion
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Low‐Cost, Scalable, and Reusable Photothermal Layers for Highly Efficient Solar Steam Generation and Versatile Energy Conversion
Abstract Solar steam generation (SSG) based on the photothermal effect has been considered to be a promising avenue for freshwater production. However, the fabrication of highly‐efficient photothermal layers, at large‐scale and low‐cost is still a challenge, hindering practical applications. Herein, it is demonstrated that carbonized towel‐gourd sponges (CTGS) are excellent photothermal materials. And a capillarity‐driven interfacial self‐coating method is developed to prepare the super‐hydrophilic CTGS/paper photothermal layer. The SSG device based on the CTGS/paper exhibits a high evaporation rate of 1.53 kg m −2 h −1 with an efficiency of 95.9 under 1 sun irradiation. The high evaporation rate only slightly reduces when confronting the diverse and complex practical SSG conditions, such as seawater and waste water. Moreover, CTGS/paper has the advantages of simple preparation, recyclablability, low‐cost (≈4 $ per m 2 ), high‐efficiency, flexibility, and scalability, which are the important prerequisites for promoting SSG techniques for industrialization and practical applications. In addition, the versatile energy conversion ability of the CTGS/paper is also demonstrated. Assisted by the photothermal effect of CTGS/paper, solar energy is converted to mechanical energy and electricity.
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机译:摘要 基于光热效应的太阳能蒸汽发电(SSG)被认为是一种很有前途的淡水生产途径。然而,大规模、低成本地制备高效光热层仍然是一个挑战,阻碍了实际应用。本文证明了碳化毛巾葫芦海绵(CTGS)是优良的光热材料。并建立了一种毛细管驱动的界面自涂覆方法,制备了超亲水性CTGS/纸光热层。基于CTGS/paper的SSG装置在1次太阳照射下表现出1.53 kg m −2 h −1的高蒸发速率和95.9%的效率。当面对海水和废水等多样化和复杂的实际SSG条件时,高蒸发率仅略有降低。此外,CTGS/paper还具有制备简单、可回收利用、成本低(≈4 $/m 2)、高效、灵活、可扩展等优点,是推动SSG技术产业化和实际应用的重要前提。此外,还展示了CTGS/纸张的多功能能量转换能力。在CTGS/纸张的光热效应的辅助下,太阳能转化为机械能和电能。
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