Zhang Chuguo, Yuan Wei, Zhang Baofeng, Yang Jiayi, Hu Yuexiao, He Lixia, Zhao XueJiao, Li Xiuhan, Wang Zhong Lin, Wang Jie
School of Electronic and Information Engineering, Beijing Jiaotong University, 100044, Beijing, P. R. China.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, 100083, Beijing, P. R. China.
Small. 2023 Dec;19(52):e2304412. doi: 10.1002/smll.202304412. Epub 2023 Aug 30.
Due to the simple installation and convenient maintenance, the floating water wave energy harvesting devices have significant economic advantages. Mass power density is the most important index to evaluate the advancement of floating wave energy harvesting devices. Herein, a self-adaptive rotating triboelectric nanogenerator (SR-TENG) with a compound pendulum and a functional gear-set is provided for wave energy harvesting. First, a compound pendulum structure with a low center of gravity and high moment of inertia is obtained by the geometric design and mechanical study. Besides, compared with the previous triboelectric nanogenerator with one-way clutch, SR-TENG can harvest twice the kinetic energy utilization through the functional gear-set. Importantly, depending on the structure design, the SR-TENG obtains the average mass power density of 45.18 mW kg under low frequency driving conditions, which is about 10 times the reference electromagnetic generator with a similar structure and size. This result shows that the SR-TENG has a significant advantage in small water wave energy harvesting. These findings provide an important example of the floating water wave energy harvesting devices.
由于安装简单且维护方便，漂浮式水波能量收集装置具有显著的经济优势。质量功率密度是评估漂浮式波能收集装置先进性的最重要指标。在此，提供了一种具有复合摆和功能齿轮组的自适应旋转摩擦纳米发电机（SR-TENG）用于波能收集。首先，通过几何设计和力学研究获得了一种重心低、转动惯量大的复合摆结构。此外，与先前带有单向离合器的摩擦纳米发电机相比，SR-TENG通过功能齿轮组可使动能利用率提高一倍。重要的是，根据结构设计，SR-TENG在低频驱动条件下获得的平均质量功率密度为45.18 mW/kg，约为具有相似结构和尺寸的参考电磁发电机的10倍。这一结果表明，SR-TENG在小水波能量收集方面具有显著优势。这些发现为漂浮式水波能量收集装置提供了一个重要范例。
