摩擦电效应
纳米发生器
材料科学
能量收集
硅
方位(导航)
电流(流体)
转速
直流电
机械能
能量(信号处理)
光电子学
微电子机械系统
电气工程
纳米技术
电压
机械工程
复合材料
压电
功率(物理)
计算机科学
统计
物理
数学
量子力学
人工智能
工程类
作者
Sicheng Dong,Tianzhao Bu,Zhaozheng Wang,Yuan Feng,Guoxu Liu,Jianhua Zeng,Jie Cao,Zhi Zhang,Liqiang Feng,Chi Zhang
标识
DOI:10.1002/aenm.202300079
摘要
Abstract A series of direct‐current tribovoltaic nanogenerators (TVNGs) with high current density have been developed for energy harvesting and mechanical sensing recently, but the lead wires that need to be connected to two relatively moving parts have greatly restricted the application of TVNG. Herein, a freestanding‐mode TVNG (FTVNG) is proposed based on metal, p‐type silicon (p‐Si), and n‐type silicon (n‐Si). As the freestanding part of metal simultaneously rubs against p‐Si and n‐Si, opposite direct current (DC) outputs can be generated, thus forming a DC output from p‐Si to n‐Si in the external circuit. Resulting from the distinctive structure, FTVNGs are applicable for harvesting energy from moving objects without attached wires. Additionally, by using steel needles to precisely control the actual contact area, the electrical output characteristics and influence laws of the tribovoltaic effect under different working parameters such as area and speed are studied. Moreover, FTVNG is integrated into the traditional rolling bearing as a triboelectric bearing, realizing energy recovery from the rotational motion of mechanical parts and speed sensing, which demonstrates the great application potential of TVNG in basic components and parts.
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