Wang Hao, Zhu Chuanqing, Wang Weichen, Xu Ruijiang, Chen Pengfei, Du Taili, Xue Tingxi, Wang Zhaoyang, Xu Minyi
Dalian Key Lab of Marine Micro/Nano Energy and Self-Powered Systems, Marine Engineering College, Dalian Maritime University, Dalian 116026, China.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100085, China.
Nanomaterials (Basel). 2022 Feb 10;12(4):594. doi: 10.3390/nano12040594.
Marine distributed devices are essential infrastructure for exploring and utilizing the ocean. As the most common carrier of these devices, floating and submerged buoys are subject to a bottleneck of power supply. Recent progress in nanogenerators could convert the high-entropy marine kinetic energy (e.g., wave) robustly, which may form an in-situ power solution to marine distributed devices. This study is devoted to develop a stackable triboelectric nanogenerator (S-TENG), while each layer of it is made into multiple channels carrying PTFE balls in between Aluminum electrodes. In the experiments based on forced motion, the peak power density of the S-TENG reaches 49 W/m, about 29% promotion from our previous benchmark. The S-TENG has also become less vulnerable to directional variation of the excitation, making its integration on various platforms more flexible in real conditions. In practice, the S-TENG has demonstrated its capability of powering LEDs as well as various sensors measuring salinity, temperature and acidity, which means the S-TENG could self-power many compact marine buoys.
海洋分布式设备是探索和利用海洋的重要基础设施。作为这些设备最常见的载体，漂浮和水下浮标面临着电源瓶颈。纳米发电机的最新进展能够有效地将高熵海洋动能（如海浪）转化为电能，这可能为海洋分布式设备形成一种原位供电解决方案。本研究致力于开发一种可堆叠的摩擦纳米发电机（S-TENG），其每一层都由多个在铝电极之间携带聚四氟乙烯球的通道组成。在基于强制运动的实验中，S-TENG的峰值功率密度达到49W/m²，比我们之前的基准提高了约29%。S-TENG对激励方向变化的敏感度也降低了，这使得它在实际条件下在各种平台上的集成更加灵活。在实际应用中，S-TENG已展示出为发光二极管以及测量盐度、温度和酸度的各种传感器供电的能力，这意味着S-TENG可为许多紧凑型海洋浮标实现自供电。
