Solar-driven interfacial evaporation (SDIE) has become an innovative and sustainable technology for seawater desalination to produce fresh water, and its integration with other energy conversion technologies (photoelectric, piezoelectric, etc.) for power generation, wastewater treatment, etc. has attracted increasing attention. In this work, a light absorber based on nickel foam-loaded CNTs doped with TiO2 and Ag is fabricated, which can utilize solar energy at different wavelengths, by simultaneous photothermal and photoelectric conversion; Meanwhile, a BT-P(VDF-TrFE) piezoelectric film is formed via P(VDF-TrFE) doped with BaTiO3 (BT); these two layers, together with the thermal insulating water transport layer and the electrode, form the solar/wave driven interfacial evaporation unit (SWDIEU), which produces fresh water and electricity. Besides, a hinge-like structure is designed to connect and extend the SWDIEU to solve the problem of piezoelectric layer deformation limited by other structures. The piezoelectric voltage of the 2-unit system is increased by 45 times and the power density of 489 times compared to the single-unit system, making the integrated system easily scalable. The system achieves an evaporation rate of 1.46 kg m-2h−1 and an electric power output of 1.01 W/m−2 under 1 sun and 1 Hz waves, and is capable of organic wastewater treatment.

中文翻译：

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一种易于扩展的多单元太阳能/波浪驱动界面蒸发系统，由铰链状结构连接，用于共同生产淡水和电力


太阳能驱动的界面蒸发 （SDIE） 已成为一种创新和可持续的海水淡化生产淡水的技术，它与其他能源转换技术（光电、压电等）相结合用于发电、废水处理等，越来越受到关注。在这项工作中，通过同时光热和光电转换，制备了一种基于泡沫镍负载 CNT 的 TiO2 和 Ag 的光吸收剂，该吸收剂可以利用不同波长的太阳能;同时，通过掺杂 BaTiO3 （BT） 的 P（VDF-TrFE） 形成 BT-P（VDF-TrFE）压电薄膜;这两层与隔热水传输层和电极一起形成太阳能/波浪驱动的界面蒸发装置 （SWDIEU），用于生产淡水和电力。此外，设计了铰链状结构连接和扩展 SWDIEU，以解决受其他结构限制的压电层变形问题。与单单元系统相比，2 单元系统的压电电压提高了 45 倍，功率密度提高了 489 倍，使集成系统易于扩展。该系统在 1 个太阳波和 1 Hz 波下实现了 1.46 kg m-2h-1 的蒸发速率和 1.01 W/m-2 的电能输出，并且能够进行有机废水处理。