School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA.
Nano Lett. 2013 Jun 12;13(6):2916-23. doi: 10.1021/nl4013002. Epub 2013 May 8.
We introduce an innovative design of a disk triboelectric nanogenerator (TENG) with segmental structures for harvesting rotational mechanical energy. Based on a cyclic in-plane charge separation between the segments that have distinct triboelectric polarities, the disk TENG generates electricity with unique characteristics, which have been studied by conjunction of experimental results with finite element calculations. The role played by the segmentation number is studied for maximizing output. A distinct relationship between the rotation speed and the electrical output has been thoroughly investigated, which not only shows power enhancement at high speed but also illuminates its potential application as a self-powered angular speed sensor. Owing to the nonintermittent and ultrafast rotation-induced charge transfer, the disk TENG has been demonstrated as an efficient power source for instantaneously or even continuously driving electronic devices and/or charging an energy storage unit. This work presents a novel working mode of TENGs and opens up many potential applications of nanogenerators for harvesting even large-scale energy.
我们介绍了一种带有分段结构的圆盘摩擦纳米发电机（TENG）的创新设计，用于收集旋转机械能。基于具有明显摩擦极性的分段之间的循环面内电荷分离，圆盘 TENG 具有独特的发电特性，通过实验结果与有限元计算的结合进行了研究。研究了分段数的作用，以最大化输出。彻底研究了转速与电输出之间的关系，这不仅显示了高速时的功率增强，还说明了其作为自供电角速度传感器的潜在应用。由于非间歇性和超快的旋转诱导电荷转移，圆盘 TENG 已被证明是一种高效的电源，可用于瞬时甚至连续驱动电子设备和/或给储能单元充电。这项工作提出了 TENG 的一种新工作模式，并为纳米发电机的广泛应用开辟了道路，甚至可以收集大规模的能量。
