摩擦电效应
电阻抗
材料科学
阻抗匹配
电气工程
电压
储能
能量收集
输出阻抗
功率(物理)
电荷(物理)
电流(流体)
充电泵
光电子学
电容器
工程类
物理
量子力学
复合材料
作者
Jing Zhao,Peinian Zhang,Zhenjie Wang,Xiaosong Zhang,Jianlong Wang,Xin Yu,Yu Yang,Hengyu Li,Xiaojun Cheng
出处
期刊:Small
[Wiley]
日期:2024-10-30
标识
DOI:10.1002/smll.202407896
摘要
Abstract As a novel energy harvesting technology, bettering the output performance of triboelectric nanogenerators (TENGs) is vital. Although quite a number methods to increase charge density have been proposed, challenges such as high impedance matching and low output current persist, severely limit the energy utilization efficiency of TENGs. Here, a new power management circuit (PMC) is proposed that through charge storage and release strategy. This circuit first excites the surface charge of the TENG using the charge excitation circuit, and then releases the stored charge through a self‐triggered switch. Compared to a standard TENG, the output current of the TENG with this PMC is increased by a factor of 1108, the impedance is decreased from 100 MΩ to 10 kΩ, and the energy utilization efficiency is markedly improved. This work affords a reference for enhancing the output performance of TENG, reducing impedance, and broading the utility attainable of TENGs.
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