Ultrahigh Electricity Generation from Low-Frequency Mechanical Energy by Efficient Energy Management

被引：199

作者：

Wang, Zhao ^{[1
]}

Liu, Wenlin ^{[1
]}

He, Wencong ^{[1
]}

Guo, Hengyu ^{[1
]}

Long, Li ^{[1
]}

Xi, Yi ^{[1
]}

Wang, Xue ^{[1
]}

Liu, Anping ^{[1
]}

Hu, Chenguo ^{[1
]}

机构：

[1] Chongqing Univ, Dept Appl Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

来源：

JOULE | 2021年 / 5卷 / 02期

基金：

中国国家自然科学基金;

关键词：

TRIBOELECTRIC NANOGENERATOR; OUTPUT POWER; DESIGN; TRANSFORMER;

D O I：

10.1016/j.joule.2020.12.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An efficient energy-management strategy is critical for the energy utilization of triboelectric nanogenerators (TENGs), of which the switch and convertor are two key parts. However, common switches only withstand limited voltage (similar to 10(2) V), while the convertors for electrostatic energy are diversely designed without standard principles. Here, we report a simple, tunable auto-spark switch to achieve energy accumulation and fast release and develop a standard design procedure of matched transformer for electrostatic energy conversion. We establish an ultrahigh voltage (over 7.5 kV) energy-management system for TENG. Ultrahigh output charge of 660 mu C per cycle, pulsed power density of 11.13 kW m(-2), and constant power density of 291 mW m(-2) at 3 Hz are all achieved. With this energy-management unit, TENGs can continuously power a wireless sensors network at 1 Hz. This energy-management approach enables TENGs to present a breakthrough in practical applications.

引用

页码：441 / 455

页数：15

共 42 条

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