Freestanding-Mode Tribovoltaic Nanogenerator for Harvesting Sliding and Rotational Mechanical Energy,Advanced Energy Materials

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Freestanding-Mode Tribovoltaic Nanogenerator for Harvesting Sliding and Rotational Mechanical Energy
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-03-08 , DOI: 10.1002/aenm.202300079
Sicheng Dong _{1,

2} , Tianzhao Bu _{1,

2} , Zhaozheng Wang _{1,

2} , Yuan Feng _{1,

3} , Guoxu Liu ₁ , Jianhua Zeng ₁ , Zhihao Wang _{1,

2} , Jie Cao _{1,

4} , Zhi Zhang _{1,

2} , Feng Liu ₁ , Chi Zhang _{1,

2,

3}

Affiliation

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.

中文翻译：

用于收集滑动和旋转机械能的独立式三极光伏纳米发电机

最近开发了一系列具有高电流密度的直流三极化纳米发电机 (TVNG)，用于能量收集和机械传感，但需要连接两个相对运动部件的导线极大地限制了 TVNG 的应用。在此，提出了一种基于金属、p 型硅 (p-Si) 和 n 型硅 (n-Si) 的独立模式 TVNG (FTVNG)。由于金属的独立部分同时与p-Si和n-Si摩擦，可以产生相反的直流（DC）输出，从而在外部电路中形成从p-Si到n-Si的直流输出。由于独特的结构，FTVNG 适用于从移动物体收集能量而无需连接电线。此外，通过使用钢针精确控制实际接触面积，研究了摩擦伏特效应在面积、速度等不同工作参数下的电输出特性及影响规律。此外，FTVNG作为摩擦电轴承集成到传统的滚动轴承中，实现了机械部件旋转运动的能量回收和速度传感，展示了TVNG在基础零部件方面的巨大应用潜力。

更新日期：2023-03-08

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