Abstract Due to the natural working mechanism of triboelectric nanogenerators (TENGs), potential energy stored by elastic materials may not be effectively converted into electric power, post mechanical triggering. Here, we report a practical bionic-jellyfish triboelectric nanogenerator (bjTENG) with polymeric thin film as the triboelectric material, which is shape-adaptive, with a hermetic package and a unique elastic resilience structure, similar to the behavior of a jellyfish. The charge separation in the elastic resilience of this bionic-structure is based on the liquid pressure-induced contact-separation of the triboelectric layers. On the basis of the conjunction of the triboelectrification and the electrostatic induction, a sustainable and enhanced output performance of 143 V, 11.8 mA/m2 and 22.1 μC/m2 under a low frequency of 0.75 Hz and at a water depth of 60 cm is produced, which can be used to supply power for dozens of green LEDs or a temperature sensor directly. More significantly, bjTENG is believed to be a priority technology which is attributable to its highly sensitivity, portability, and suitability for continuous detection of water level and fluctuation. Furthermore, a wireless self-powered fluctuation sensor early-warning system, which provides exact and wireless monitoring of fluctuation of a liquid surface, is also successfully developed.

中文翻译：

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基于仿生水母摩擦纳米发电机的水波能量采集与自供电液面波动传感

摘要 由于摩擦纳米发电机 (TENG) 的自然工作机制，弹性材料储存的势能在机械触发后可能无法有效转换为电能。在这里，我们报告了一种实用的仿生水母摩擦纳米发电机（bjTENG），其以聚合物薄膜作为摩擦电材料，具有形状适应性，具有密封封装和独特的弹性回弹结构，类似于水母的行为。这种仿生结构的弹性回弹中的电荷分离是基于摩擦电层的液体压力诱导的接触分离。在摩擦起电和静电感应相结合的基础上，在 0 的低频下可持续和增强的输出性能为 143 V、11.8 mA/m2 和 22.1 μC/m2。75Hz、60cm水深产生，可直接为几十个绿色LED或温度传感器供电。更重要的是，bjTENG 被认为是一项优先技术，这归因于其高灵敏度、便携性和连续检测水位和波动的适用性。此外，还成功开发了一种无线自供电波动传感器预警系统，可对液面波动进行精确无线监测。适合连续检测水位和波动。此外，还成功开发了一种无线自供电波动传感器预警系统，可对液面波动进行精确无线监测。适合连续检测水位和波动。此外，还成功开发了一种无线自供电波动传感器预警系统，可对液面波动进行精确无线监测。