Triboelectricity has demonstrated bright application prospects in the field of blue energy harvesting. However, the low output efficiency of solid-liquid triboelectricity hinders its practical application. This paper proposed a high-efficiency drip nanogenerator with a cambered surface based on the brachistochrone curve principle. In this nanogenerator, a drop of water can achieve an output current of 50 µA and an output voltage of 137 V without pre-charging. The cambered-surface structured triboelectric nanogenerator (C-TENG) enhances the short-circuit current by 30 times compared to the traditional TENG based on flat-surface structure (F-TENG). The output power of C-TENG reaches up to 1.875 mW at the central angle of 60°. The Simcenter STAR-CCM+ Viewer software is utilized to simulate the falling process of water droplets and the dynamics to explain the difference in the falling process of central angle structures at different central angles. The C-TENG characteristics ensure improved energy collection efficiency. Therefore, it is used to design a new droplet energy collection structure for rain energy harvesting. C-TENG has a more significant lighting effect than F-TENG. This new drip generator demonstrates remarkable efficiency in collecting various water energies in nature and has potential applications in device power supply and self-powered sensing.

摩擦电在蓝色能量收集领域展现出广阔的应用前景。然而，固液摩擦电的低输出效率阻碍了其实际应用。本文基于brachistochrone曲线原理提出了一种具有弧面表面的高效滴灌纳米发电机。在这种发电机中，一滴水无需预充电即可实现 50 µA 的输出电流和 137 V 的输出电压。与基于平面结构的传统TENG（F-TENG）相比，曲面结构的摩擦纳米发电机（C-TENG）将短路电流提高了30倍。C-TENG 的输出功率在 60° 中心角时高达 1.875 mW。利用Simcenter STAR-CCM+ Viewer软件模拟水滴的下落过程和动力学，解释不同中心角下中心角结构下落过程的差异。C-TENG 特性确保提高能量收集效率。因此，它被用来设计一种新的液滴能量收集结构，用于雨水能量收集。C-TENG 的灯光效果比 F-TENG 更显着。这种新型滴水发生器在收集自然界各种水能方面表现出卓越的效率，在设备供电和自供电传感方面具有潜在应用。用于设计一种新型液滴能量收集结构，用于雨水能量收集。C-TENG 的灯光效果比 F-TENG 更显着。这种新型滴水发生器在收集自然界各种水能方面表现出卓越的效率，在设备供电和自供电传感方面具有潜在应用。用于设计一种新型液滴能量收集结构，用于雨水能量收集。C-TENG 的灯光效果比 F-TENG 更显着。这种新型滴水发生器在收集自然界各种水能方面表现出卓越的效率，在设备供电和自供电传感方面具有潜在应用。