摩擦电效应
纳米发生器
材料科学
整流器(神经网络)
光电流
光电子学
能量收集
接触带电
直流电
阳极
电气工程
数码产品
电极
电压
功率(物理)
计算机科学
物理
工程类
随机神经网络
量子力学
机器学习
循环神经网络
人工神经网络
复合材料
作者
Jianjun Luo,Liang Xu,Wei Tang,Tao Jiang,Feng Ru Fan,Yaokun Pang,Libo Chen,Yan Zhang,Zhong Lin Wang
标识
DOI:10.1002/aenm.201800889
摘要
Abstract The air breakdown phenomenon is generally considered as a negative effect in previous research on triboelectric nanogenerators (TENGs), which is always accompanied by air ionization. Here, by utilizing the air breakdown induced ionized air channel, a direct‐current triboelectric nanogenerator (DC‐TENG) is designed for harvesting contact‐separation mechanical energy. During working process, the charges first transfer from bottom to top electrodes through an external circuit in contact state, then flow back via the ionized air channel created by air breakdown in the separation process. So a unidirectional flow of electrical charges can be observed in the external circuit. With repeating contact‐separation cycles, continuous pulsed DC output through the external circuit can be realized. This working mechanism was verified by real‐time electrode potential monitoring, photocurrent signal detection, and controllable discharging observation. The DC‐TENG can be used for directly and continuously charging an energy storage unit and/or driving electronic devices without using a bridge rectifier. Owing to its simplicity in structure, the mechanism is further applied to fabricate the first flexible DC‐TENG. This research provides a significant fundamental study for DC‐TENG technology and may expand its application in flexible electronics and flexible self‐charging power systems.
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