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Robust Triboelectric Nanogenerator with Ratchet‐like Wheel‐Based Design for Harvesting of Environmental Energy
Author(s) -
Gao Qi,
Li Yikang,
Xie Zhijie,
Yang Weixiong,
Wang Zheng,
Yin Mengfei,
Lu Xiaohui,
Cheng Tinghai,
Wang Zhong Lin
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201900801
Subject(s) - triboelectric effect , nanogenerator , ratchet , reciprocating motion , energy harvesting , mechanical energy , robustness (evolution) , voltage , materials science , electrical engineering , power (physics) , automotive engineering , engineering , physics , mechanical engineering , work (physics) , composite material , gene , biochemistry , chemistry , quantum mechanics , gas compressor
In this study, a ratchet‐like wheel‐based and spring‐assisted sustainable triboelectric nanogenerator (RS‐TENG) is fabricated for an efficient harvesting of rotational motion. The multitooth structure of the ratchet‐like wheel and force of the spring are used to convert the rotational motion induced by mechanical energy in the environment (such as wind energy) into a reciprocating linear motion of the movable parts, making two triboelectric layers of each sub‐triboelectrification unit produce contact–separation motion to achieve power output. The power output of one subunit is ≈0.37 mW at a uniform speed of 60 rpm, and the power output can increase to 6.05 mW by parallel connection of six subunits. The RS‐TENG with parallel connection of six subunits exhibits an open‐circuit voltage of 320 V throughout the 8 h of continuous operation (≈345 600 contact–separation events), reflecting its excellent durability and robustness. The thermometer can be stably powered at a wind speed of 15.5 m s −1 by the rectifier circuit and a 330 µF commercial capacitor. The above experiments show that RS‐TENG can not only harvest the mechanical energy around the environment for self‐powered sensing, but also exhibit an improved output performance and outstanding robustness.