Convenient and green hydroelectricity generation (HG) systems are widely studied to cope with the energy crisis. Electricity can be generated through streaming potential with merely water droplets. Nevertheless, the operational requirement of persistent water supply restricts the durability and practicality of HG. Solar-driven steam generation with continuous and sufficient water flow has become a promising integration way to enhance HG sustainability. However, most evaporation-accelerated hydroelectricity generators are threatened by excessive wetting decay and ionic erosion damage, which significantly impair charge accumulation and operational durability. To address this issue, a carbon black/polypyrrole decorated Tencel framework (CPF) with tunable water flow is fabricated through twisting and braiding technology. The modified water flow rate, height, and content ensure rapid ion migration, appropriate wetting boundary, and sufficient brine circulation, respectively. The aqueous flow and ion strength are optimized through the evaporation-accelerated and desalination-integrated HG. Hence, the CPF evaporator shows an efficient, self-operating, and sustainable output of 0.73 V, 0.6 µA, and 2.38 kg m⁻² h⁻¹ in 3.5 wt.% brine under 1 sun radiation without salt deposition. The scalable, prolonged, and adaptable outdoor operation throughout the daytime ensures the clean production of electricity and freshwater.

中文翻译：

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具有可调水流的纤维太阳能蒸发器，可实现高效、自运行和可持续的水力发电

为了应对能源危机，便捷、绿色的水力发电（HG）系统被广泛研究。只需水滴即可通过流动势能产生电力。然而，持续供水的运行要求限制了HG的耐用性和实用性。太阳能驱动的蒸汽产生和持续充足的水流已成为增强温室气体可持续性的一种有前景的集成方式。然而，大多数蒸发加速水力发电机都受到过度润湿衰减和离子侵蚀损坏的威胁，这会严重损害电荷积累和运行耐久性。为了解决这个问题，通过加捻和编织技术制造了具有可调水流的炭黑/聚吡咯装饰的天丝框架（CPF）。修改后的水流速、高度和含量分别确保快速离子迁移、适当的润湿边界和足够的盐水循环。通过蒸发加速和脱盐集成 HG 优化水流和离子强度。因此，CPF蒸发器在1个太阳辐射下的3.5 wt.%盐水中表现出高效、自运行和可持续的输出，输出功率为0.73 V、0.6 µA和2.38 kg m ^-2  h ^-1 ，且没有盐沉积。全天可扩展、长时间且适应性强的户外运行确保了电力和淡水的清洁生产。