Single-electrode-based rotationary triboelectric nanogenerator and its applications as self-powered contact area and eccentric angle sensors

被引：93
作者：
Li, Yufang [1 ,2 ]
Cheng, Gang [1 ,3 ]
Lin, Zong-Hong [1 ]
Yang, Jin [1 ]
Lin, Long [1 ]
Wang, Zhong Lin [1 ]
机构：
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[2] Nanjing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Nanjing, Jiangsu, Peoples R China
[3] Henan Univ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China
来源：
NANO ENERGY | 2015年 / 11卷
关键词：
Triboelectric nanogenerator; Rotating energy; Continuous discharge; Instantaneous discharge; Self-powered sensor; ENERGY-CONVERSION; GENERATOR; DRIVEN;
D O I：
10.1016/j.nanoen.2014.11.010
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We introduce a single-electrode-based rotationary triboelectric nanogenerator (SR-TENG) formed by two wheels and a belt for harvesting mechanical energy. The fundamental working principle is studied by conjunction of experimental results with finite element calculation. The continuous discharging (CD) mode and the instantaneous discharging (ID) mode have been demonstrated for the SR-TENG. The systematical experiments indicate that the short-circuit current increases with the rotating speed for SR-TENG with CD mode, but the open-circuit voltage maintains constant. The short-circuit current and open-circuit voltage decrease nearly linearly with the friction contact area, which provides an application as a self-powered surface area sensor of transmission wheel and gear. For SR-TENG with ID mode, the electric outputs are greatly enhances. The current peak is about 20 mu A at variation rotating speeds even if the external load is 10 M Omega, which is 33 times higher than that of the SR-TENG with CD mode without external load. The SR-TENG with ID mode has also been demonstrated as a self-powered misalignment sensor. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：323 / 332
页数：10
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