| Title | An underwater flag-like triboelectric nanogenerator for harvesting ocean current energy under extremely low velocity condition |
| Authors | Wang, Yan Liu, Xiangyu Chen, Tianyu Wang, Hao Zhu, Chuanqing Yu, Hongyong Song, Liguo Pan, Xinxiang Mi, Jianchun Lee, Chengkuo Xu, Minyi |
| Affiliation | Dalian Maritime Univ, Marine Engn Coll, Dalian Key Lab Marine Micro Nano Enegy & Self Pow, Dalian 116026, Peoples R China Natl Univ Singapore, Ctr Intelligent Sensors & MEMS CISM, 4 Engn Dr 3, Singapore 117576, Singapore Guangdong Ocean Univ, Sch Elect & Informat Technol, Zhanjiang 524088, Peoples R China Peking Univ, Coll Engn, Beijing 100871, Peoples R China |
| Keywords | WAVE ENERGY WIND ENERGY FLUTTER SENSOR FILM |
| Issue Date | Dec-2021 |
| Publisher | NANO ENERGY |
| Abstract | Ocean current energy harvester is a promising infrastructure to achieve self-powered marine wireless sensing system. This study proposes and investigates an underwater flag-like Triboelectric Nanogenerator (UF-TENG) based on the flow-induced vibration. The UF-TENG consists of two conductive ink-coated polyethylene terephthalate membranes and one strip of poly tetra fluoroethylene membrane with their edges sealed up by a waterproof PTFE tape. In this way, the triboelectric layers are prevented from contacting water. It is verified that the vortex street induced by a cylinder enhances the vibration of the UF-TENG. The low velocity startup enables the UF-TENG to harvest extremely low-velocity ocean current energy, e.g., presently achieving 0.133 m/s as the critical startup velocity. The proposed UF-TENG has a simpler structure and better low velocity performance when comparing with electromagnetic generators and piezoelectric generators. Parametric studies are conducted to evaluate the influence of geometrical parameters of the UF-TENG on the vibration behavior and output performance. It is demonstrated that the underwater electrical appliance can be powered by parallel UF-TENG units. The present UF-TENG is a more cost-effective and more accessible hydroelectric technology to utilize the renewable ocean current for powering sensors or micro electric appliances in Internet of Things. |
| URI | http://hdl.handle.net/20.500.11897/626368 |
| ISSN | 2211-2855 |
| DOI | 10.1016/j.nanoen.2021.106503 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
