Simultaneously Harvesting Electrostatic and Mechanical Energies from Flowing Water by a Hybridized Triboelectric Nanogenerator
Simultaneously Harvesting Electrostatic and Mechanical Energies from Flowing Water by a Hybridized Triboelectric Nanogenerator
复制标题
通过混合摩擦纳米发电机同时从流动的水中收集静电能和机械能
DOI：
10.1021/nn406565k
复制
发表时间：
2014-02-01
期刊：
影响因子：
17.1
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Cheng, Gang;Lin, Zong-Hong;Wang, Zhong Lin
流水不仅包含机械能（动能），还由于其与周围介质（如空气）接触产生的摩擦电荷而具有静电能。在本文中，一种水轮混合摩擦纳米发电机（TENG）被研发出来，它由水 - TENG部分和盘 - TENG部分组成，用于同时从家庭水龙头流出的自来水中收集这两种能量。该混合TENG的轮叶由具有纳米结构的超疏水聚四氟乙烯（PTFE）薄膜构成，其作为水 - TENG从流水中收集静电能。此外，冲击轮叶的流水还会引起盘 - TENG的旋转运动，可用于收集机械能（动能）。在水流量为54毫升/秒时，水 - TENG和盘 - TENG的短路电流分别可达到12.9微安和3.8微安。该混合TENG还被证明可收集风能，并作为一种自供电传感器来检测水流量和风速。所有这些结果都显示了混合TENG从环境中收集多种能量的潜力。
Flowing water contains not only mechanical kinetic energy, but also the electrostatic energy owing to the triboelectric charges caused by its contact with surrounding media such as air. In this paper, a water wheel hybridized triboelectric nanogenerator (TENG), composed of a water-TENG part and a disk-TENG part, has been developed for simultaneously harvesting the two types of energies from the tap water flowing from a household faucet. The wheel blades of the hybridized TENG are composed by superhydrophobic polytetrafluoroethylene (PTFE) thin films with nanostructures, which are used as water-TENG to harvest the electrostatic energy from the flowing water. In addition, the flowing water impacted on the wheel blades also causes the rotation motion of disk-TENG and can be used to harvest the mechanical kinetic energy. The short-circuit current of the water-TENG and the disk-TENG at a flowing water rate of 54 mL/s can reach 12.9 and 3.8 mu A, respectively. The hybridized TENG is also demonstrated to harvest wind energy and acts as a self-powered sensor to detect the flowing water rate and wind speed. All these results show the potentials of the hybridized TENG for harvesting multiple types of energies from the environment.