Rotary Triboelectric Nanogenerator Based on a Hybridized Mechanism for Harvesting Wind Energy
Rotary Triboelectric Nanogenerator Based on a Hybridized Mechanism for Harvesting Wind Energy
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DOI：
10.1021/nn402477h
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发表时间：
2013-08-01
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：
Xie, Yannan;Wang, Sihong;Wang, Zhong Lin
收集机械能对于我们生活环境中的可用性和丰富性变得越来越重要。摩擦电纳米发电机（TENG）是一种简单，具有成本效益和高效的方法，用于以各种形式从机械能发电。在这里，我们开发了一种TENG，旨在使用传统材料收集我们正常生活环境中可用的小规模风能。能量采集器基于多个基于板的TENG的旋转驱动机械变形。其工作机理是利用摩擦起电效应和静电感应效应实现的接触-滑动-分离-接触混合过程。通过在表面上引入聚合物纳米线，旋转TENG提供250 V的开路电压和0.25 mA的短路电流，对应于在类似15 m/s的风速下类似39 W/m（2）的最大功率密度，能够直接驱动数百种电子设备，如商用发光二极管（LED），或快速充电电容器。旋转TENG也被用作测量风速的自供电传感器。这项工作代表了TENG在实际应用中的重大进展及其在未来风力发电技术中的巨大潜力。这项技术也可以扩展到从洋流中获取能量，使纳米技术在不久的将来进入我们的日常生活成为可能。
Harvesting mechanical energy is becoming increasingly important for its availability and abundance in our living environment. Triboelectric nanogenerator (TENG) is a simple, cost-effective, and highly efficient approach for generating electricity from mechanical energies in a wide range of forms. Here, we developed a TENG designed for harvesting tiny-scale wind energy available in our normal living environment using conventional materials. The energy harvester is based on a rotary driven mechanical deformation of multiple plate-based TENGs. The operation mechanism is a hybridization of the contact-sliding-separation-contact processes by using the triboelectrification and electrostatic induction effects. With the introduction of polymer nanowires on surfaces, the rotary TENG delivers an open-circuit voltage of 250 V and a short-circuit current of 0.25 mA, corresponding to a maximum power density of similar to 39 W/m(2) at a wind speed of similar to 15 m/s, which is capable of directly driving hundreds of electronic devices such as commercial light-emitting diodes (LEDs), or rapidly charging capacitors. The rotary TENG was also applied as a self-powered sensor for measuring wind speed. This work represents a significant progress in the practical application of the TENG and its great potential in the future wind power technology. This technology can also be extended for harvesting energy from ocean current, making nanotechnology reaching our daily life a possibility in the near future.