Soft-bionic-fishtail structured triboelectric nanogenerator driven by flow-induced vibration for low-velocity water flow energy harvesting  

作　　者：Sheng Zhang Zhaoxu Jing Xinxian Wang Mingkang Zhu Xin Yu Jianyang Zhu Tinghai Cheng Hongwei Zhao Zhong Lin Wang 

机构地区：[1]Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China [2]School of Nanoscience and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [3]Institute of Robotics and Intelligent Systems,Wuhan University of Science and Technology,Wuhan 430081,China [4]School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta,Georgia,30332-0245,USA [5]School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130022,China

出　　处：《Nano Research》2023年第1期466-472,共7页纳米研究（英文版）

基　　金：The authors are grateful for the support from the National Key Research&Development Project from the Minister of Science and Technology(Nos.2021YFA1201601 and 2021YFA1201604);the Beijing Natural Science Foundation(No.3222023).

摘　　要：To adapt to the low-velocity water flow closely related to human life,the natural energy can be efficiently harvested and used to power monitoring devices.Herein,a triboelectric soft fishtail(TE-SFT)driven by flow-induced vibration(FIV)effect is proposed based on the soft material synthesis technology.Specifically,inspired by the fishtail fin,a bluff body with the cross-section of fishtail-shaped is designed,and has a preferable vortex effect by fluid simulation.In power generation part,the triboelectric nanogenerator(TENG)is designed to act as an inertial pendulum structure by geometric method.Under the FIV effect,the TESFT driven by fishtail-shaped bluff body swings like a fish in the water and then brings the inertial pendulum to acquire the oscillation for harvesting energy from low-velocity water flow.The TE-SFT attains an open-circuit voltage(VOC)of 200 V to 313 V at the flow velocities of 0.24 to 0.89 m/s.Additionally,after 30 days of water immersion,the VOC of TE-SFT retains 96.81%.In demonstration,the TE-SFT is applied to power the temperature and humidity sensor through harvesting water flow energy.This work also provides a way for self-powered system based on the TENG and soft bionic fish in water environment.

关 键 词：low-velocity water flow flow-induced vibration soft fishtail triboelectric nanogenerator energy harvesting 

分 类 号：TM31[电气工程—电机]