Capsule Triboelectric Nanogenerators: Toward Optional 3D Integration for High Output and Efficient Energy Harvesting from Broadband-Amplitude Vibrations,ACS Nano

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Capsule Triboelectric Nanogenerators: Toward Optional 3D Integration for High Output and Efficient Energy Harvesting from Broadband-Amplitude Vibrations
ACS Nano ( IF 15.8 ) Pub Date : 2018-10-01 00:00:00 , DOI: 10.1021/acsnano.8b03824
Chaoxing Wu ₁ , Jae Hyeon Park ₁ , Bonmin Koo ₁ , Xiangyu Chen _{2,

3} , Zhong Lin Wang ₄ , Tae Whan Kim ₁

Affiliation

The technology of triboelectric nanogenerators (TENGs) has made great progress as a promising approach to generating electricity from ambient vibration energy. However, finding a way to generate enough electrical output efficiently from vibrations with a broadband of amplitudes is crucial when the relatively low current output of existing TENGs and the existence of natural vibrations with diverse amplitudes are considered. In this work, a freestanding and lightweight triboelectric nanogenerator with a capsule structure (namely, a capsule TENG) is demonstrated with an aim toward optional 3D integration and the efficient harvesting of energy from vibrations with a broadband of amplitudes. The capsule TENGs can be easily integrated to form 1D, 2D, and 3D structures to realize high electrical output. Under ideal conditions, the total output power of an integrated capsule-TENG pack can be approximately estimated as p × n², where p is the peak output power per capsule TENG and n is the number of capsule TENGs. When capsule TENGs with hybrid structures, such as different lengths of the capsule tube and different numbers of paired electrodes, are assembled, energy can be more efficiently harvested from vibrations with a broadband of amplitudes. A total of three parameters (the active area-to-volume ratio, the power-to-volume ratio, and the power-to-weight ratio), which are important parameters for 3D-integrated TENGs, are proposed. The results of this research show that capsule TENGs are versatile devices that can potentially be used for the efficient harvesting of ambient vibration energy.

中文翻译：

胶囊式摩擦电纳米发电机：实现可选的3D集成，以从宽带振幅振动中获得高输出和有效的能量收集

摩擦电纳米发电机（TENGs）的技术已经取得了巨大的进步，这是一种从环境振动能量中产生电能的有前途的方法。但是，当考虑到现有TENG的电流输出相对较低以及存在各种振幅的自然振动时，找到一种方法即可有效地从振幅较宽的振动中产生足够的电输出至关重要。在这项工作中，展示了一种具有胶囊结构（即胶囊TENG）的独立式轻量级摩擦纳米发电机，旨在实现可选的3D集成以及有效地从振幅幅度较大的振动中收集能量。胶囊TENG可以轻松集成以形成1D，2D和3D结构，以实现高电输出。在理想条件下p × n ²，其中p是每个胶囊TENG的峰值输出功率，n是胶囊TENGs的数量。当装配具有混合结构（例如不同长度的胶囊管和不同数量的成对电极）的胶囊TENG时，可以更有效地从宽带振幅的振动中收集能量。提出了总共三个参数（有效面积体积比，功率体积比和功率重量比），它们是3D集成TENG的重要参数。这项研究的结果表明，胶囊TENGs是通用设备，可以潜在地用于有效收集环境振动能量。

更新日期：2018-10-01

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