Efficient energy acquisition and energy-saving measures are important to meet climate change commitments and address energy crises. However, combining high energy density, low preparation energy consumption, and low temperature management energy consumption remains a major challenge. We mitigate this challenge by fabricating a recyclable fiber film via the coelectrospinning of tantalum pentoxide/thermoplastic polyurethane (Ta₂O₅/TPU) to integrate passive daytime radiative cooling technology into the triboelectric nanogenerator (TENG) system. Due to the high dielectric constant of Ta₂O₅ and special bead chain structure of the fiber film, the integrated TENG-based radiative cooling textile offers an excellent TENG output (current density ∼77 mA m^–2) and passive daytime radiative cooling capability (cooling temperature ∼25 °C), as well as the ability to withstand at least 10 renewable cycles. Moreover, the composite material exhibits waterproof and wear-resistant properties. As a proof of concept, the potential applications of Ta₂O₅/TPU fiber films in smart car clothing for energy harvesting, cooling, shading, and scratch collision warning were demonstrated. This study contributes to the development of textiles for electricity generation and zero-energy input cooling.

中文翻译：

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Ta2O5/TPU 纤维薄膜的可回收珠链结构，用于能量收集和被动日间辐射冷却


高效的能源获取和节能措施对于履行气候变化承诺和应对能源危机非常重要。然而，将高能量密度、低制备能耗和低温管理能耗相结合仍然是一个重大挑战。我们通过五氧化二钽/热塑性聚氨酯 （Ta₂O₅/TPU） 的共静电纺丝制造可回收纤维薄膜，将被动日间辐射冷却技术集成到摩擦纳米发电机 （TENG） 系统中，从而缓解了这一挑战。由于 Ta₂O₅ 的高介电常数和纤维薄膜的特殊珠链结构，基于 TENG 的集成辐射冷却纺织品提供了出色的 TENG 输出（电流密度 ∼77 mA m^–2）和被动日间辐射冷却能力（冷却温度 ∼25 °C），以及承受至少 10 次可再生循环的能力。此外，复合材料具有防水和耐磨性能。作为概念验证，展示了 Ta₂O₅/TPU 纤维薄膜在智能汽车服装中的潜在应用，用于能量收集、冷却、遮蔽和划痕碰撞警告。这项研究有助于开发用于发电和零能耗输入冷却的纺织品。