Robust triboelectric-electromagnetic hybrid nanogenerator with maglev-enabled automatic mode transition for exploiting breeze energy

Kangqi Fan, Chenggen Chen, Baosen Zhang, Xiang Li, Zhen Wang, Tinghai Cheng and Zhong Lin Wang

Applied Energy, 2022, vol. 328, issue C, No S0306261922014751

Abstract: Exploiting the pervasive breeze energy is normally difficult due to the high start-up wind speed of the conventional electromagnetic generator (EMG) and the material abrasion of the emerging triboelectric nanogenerator (TENG). We report herein an automatic-mode-transition (AMT) strategy, which enables the TENG to work in intermittent-contact (IC) mode under a low wind speed of 2.4 m/s and automatically transition to noncontact (NC) mode with the increasing wind speed. Realized with a rationally designed maglev mechanism, the AMT-TENG can replenish the dissipated charges with very small friction drag and minute material abrasion, contributing to a low start-up speed, high mechanical durability, and enhanced electrical stability. During a 10-day durability test, the AMT-TENG can maintain 82 % of its incipient voltage; by contrast, the NC-TENG and C-TENG only retain 36 % and 10 % output voltage, respectively. The AMT-TENG can be upgraded easily to an AMT triboelectric-electromagnetic hybrid nanogenerator (AMT-TEHG) by simply adding pick-up coils, allowing the device to generate complementary electric outputs. By exploiting the breeze energy, the AMT-TEHG can serve not only as a self-sufficient wind speed sensor but also as a green energy source for some electronics. This work demonstrates a promising strategy for realizing robust TEHGs, which has great potential in breeze energy exploitation and self-sufficient sensing.

Keywords: Triboelectric nanogenerator; Low-power electronics; Maglev mechanism; Hybrid generator; Breeze energy (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2022.120218

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