Water wave energy harvesting and self-powered liquid-surface fluctuation sensing based on bionic-jellyfish triboelectric nanogenerator
Water wave energy harvesting and self-powered liquid-surface fluctuation sensing based on bionic-jellyfish triboelectric nanogenerator
复制标题
基于仿生水母摩擦纳米发电机的水波能量收集和自供电液面波动传感
DOI：
10.1016/j.mattod.2017.10.006
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发表时间：
2018-01-01
期刊：
影响因子：
24.2
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
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作者：
Chen, Bao Dong;Tang, Wei;Wang, Zhong Lin
由于摩擦电纳米发电机（TENG）的自然工作机制，由弹性材料存储的势能在机械触发后可能无法有效地转换为电能。在这里，我们报告了一个实用的仿生水母摩擦电纳米发电机（bjTENG）与聚合物薄膜作为摩擦电材料，这是形状自适应，具有密封包装和独特的弹性恢复结构，类似于水母的行为。这种仿生结构的弹性恢复力中的电荷分离是基于液体压力引起的摩擦电层的接触分离。在摩擦起电和静电感应相结合的基础上，在0.75 Hz的低频和60 cm的水深下，产生了143 V、11.8 mA/m2和22.1 μ C/m2的持续增强的输出性能，可用于为数十个绿色LED或温度传感器直接供电。更重要的是，bjTENG被认为是一项优先技术，这归因于其高度灵敏度，便携性和连续检测水位和波动的适用性。此外，还成功研制了一种无线自供能波动传感器预警系统，该系统能够对液面波动进行精确的无线监测。
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/m(2) and 22.1 mu C/m(2) 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.