The ultimate goal of a triboelectric nanogenerator is to boost the electric output, while ensuring device simplicity, effectiveness, reproducibility, and practicability. This study addresses these virtues by introducing a newly found short-circuiting effect. Further, charge-trapping is synergistically employed to maximize the electrostatic charge and the charge transfer quantity, leading to 8.5-fold higher power density and 7-fold lower impedance. This simple but effective strategy leads to a record high volumetric power density of 384 W m⁻³ Hz⁻¹ and it perfectly fits a rotary-structure design for harvesting high-entropy kinetic energy of wind and water flow. Integrating with a unique circuit design, the device can effectively charge a capacitor and a lithium battery by scavenging the high-entropy energy for powering an electrochemical wastewater treatment. The results demonstrate a new performance level, representing a significant step toward making triboelectric energy harvesters a reality.

中文翻译：

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从花哨到实用：高熵能量收集的短路和电荷捕获的协同效应


摩擦纳米发电机的最终目标是提高电力输出，同时确保设备的简单性、有效性、可重复性和实用性。这项研究通过引入新发现的短路效应来解决这些优点。此外，协同利用电荷捕获来最大化静电荷和电荷转移量，从而使功率密度提高8.5倍，阻抗降低7倍。这种简单而有效的策略实现了创纪录的384 W m ⁻³ Hz ⁻¹ 高体积功​​率密度，并且它完美地适合用于收集风的高熵动能的旋转结构设计和水流。该装置结合独特的电路设计，可以通过收集高熵能量为电容器和锂电池有效充电，为电化学废水处理提供动力。结果展示了新的性能水平，代表着摩擦电能量收集器成为现实的重要一步。