Swing-Structured Triboelectric-Electromagnetic Hybridized Nanogenerator For Breeze Wind Energy Harvesting

Wind energy is one of the most promising renewable and clean energy widely distributed in nature.However,due to the technical limitations of traditional electromagnetic generator(EMG),low frequency breeze energy has been seldom exploited and utilized.Triboelectric nanogenerators(TENGs)provide a new technical solution for large-scale collection of distributed breeze wind energy(usually 3.4-5.4 m/s).In this paper,a swing structured triboelectricelectromagnetic hybridized nanogenerator for breeze energy harvesting is prepared.The design of the air gap between the triboelectric layer and the electrode and the flexible brush can minimize the wear of the material to reduce the triboelectric resistance and maintain the triboelectric charge,thereby enhancing the robustness and Durability of the triboelectric nanogenerator.Based on the same driving conditions given by the linear motor,the performance of the friction nano generator(TENG)and the electromagnetic generator(EMG)and the output and charging performance of the hybrid nanogenerator under external triggering are compared,and the comparison of the TENG part and the EMG part is focused.Rectified output performance.The test results show that the rectified peak power and average power of the TENG part are 60 and 635 times that of the EMG part respectively when the number of turns of the coil is medium.This shows that TENG technology is more effective than EMG technology in lowfrequency distributed energy collection.Discuss the influence of air gap and coil parameters on the performance of TENG and EMG respectively.Furthermore,the hybrid nanogenerator and array device are hung on tree branches to demonstrate the effective harvesting of breeze wind energy,delivering total rectified peak power densities of 2.07 and 1.94 W/m3 for the single and array devices,respectively.The application demonstrations of powering portable electronics reveal the huge prospects of hybrid nanogenerator in self-powered environmental monitoring toward forest/park fire warning systems.