Mun Tae Jin, Moon Ji Hwan, Park Jong Woo, Baughman Ray H, Kim Seon Jeong
Center for Self-Powered Actuation, Department of Electronic Engineering, Hanyang University, Seoul, 04763, South Korea.
Alan G. MacDiarmid Nano Tech Institute, University of Texas at Dallas, Richardson, TX, 75080, USA.
Small Methods. 2023 Oct;7(10):e2300526. doi: 10.1002/smtd.202300526. Epub 2023 Jun 14.
Owing to increasing amount of research on energy harvesting, studies on harvesters for practical application and their performance are attracting attention. Therefore, studies on the use of continuous energy as an energy source for energy-harvesting devices are being conducted, and fluid flows, e.g., wind, river flow, and sea wave, are widely used as input energy sources for continuous energy harvesting. A new energy-harvesting technology has emerged based on the mechanical stretch and release of coiled carbon nanotube (CNT) yarns, which generate energy based on the change in the electrochemical double-layer capacitance. First, this CNT yarn-based mechanical energy harvester is demonstrated, which is applicable to various environments where fluid flow exists. This environment-adaptable harvester uses rotational energy as the mechanical energy source and is tested in river and ocean environments. Moreover, an attachable-type harvester for the application of the existing rotational system is devised. In the case of a slow rotational environment, a square-wave strain-applying harvester has been implemented, which can convert sinusoidal strain motion into square-wave strain motion for high output voltages. To achieve high performance of practical harvesting applications, a scale-up method for powering signal-transmitting devices has been implemented.
由于能量收集的研究日益增多，针对实际应用的能量收集器及其性能的研究正受到关注。因此，正在开展关于将持续能量用作能量收集装置能源的研究，流体流动，如风能、河流和海浪，被广泛用作持续能量收集的输入能源。基于卷曲碳纳米管（CNT）纱线的机械拉伸和释放出现了一种新的能量收集技术，该技术基于电化学双层电容的变化来产生能量。首先，展示了这种基于CNT纱线的机械能收集器，它适用于存在流体流动的各种环境。这种环境适应性收集器利用旋转能量作为机械能来源，并在河流和海洋环境中进行了测试。此外，还设计了一种适用于现有旋转系统的可附着式收集器。在缓慢旋转环境的情况下，实现了一种施加方波应变的收集器，它可以将正弦应变运动转换为方波应变运动以获得高输出电压。为了实现实际收集应用的高性能，已实施了一种为信号传输装置供电的放大方法。
