Shan Chuncai, Li Kaixian, Cheng Yuntao, Hu Chenguo
School of Physics, Chongqing University, Chongqing, 400044, People's Republic of China.
School of Energy and Engineering, Chongqing University, Chongqing, 400044, People's Republic of China.
Nanomicro Lett. 2023 May 20;15(1):127. doi: 10.1007/s40820-023-01115-4.
As hundreds of millions of distributed devices appear in every corner of our lives for information collection and transmission in big data era, the biggest challenge is the energy supply for these devices and the signal transmission of sensors. Triboelectric nanogenerator (TENG) as a new energy technology meets the increasing demand of today's distributed energy supply due to its ability to convert the ambient mechanical energy into electric energy. Meanwhile, TENG can also be used as a sensing system. Direct current triboelectric nanogenerator (DC-TENG) can directly supply power to electronic devices without additional rectification. It has been one of the most important developments of TENG in recent years. Herein, we review recent progress in the novel structure designs, working mechanism and corresponding method to improve the output performance for DC-TENGs from the aspect of mechanical rectifier, tribovoltaic effect, phase control, mechanical delay switch and air-discharge. The basic theory of each mode, key merits and potential development are discussed in detail. At last, we provide a guideline for future challenges of DC-TENGs, and a strategy for improving the output performance for commercial applications.
在大数据时代，数以亿计的分布式设备出现在我们生活的各个角落用于信息收集和传输，最大的挑战是这些设备的能量供应以及传感器的信号传输。摩擦纳米发电机（TENG）作为一种新能源技术，因其能够将环境机械能转化为电能，满足了当今分布式能源供应日益增长的需求。同时，TENG还可作为传感系统。直流摩擦纳米发电机（DC-TENG）无需额外整流就能直接为电子设备供电，它已成为近年来TENG最重要的发展成果之一。在此，我们从机械整流器、摩擦光伏效应、相位控制、机械延迟开关和空气放电等方面综述了DC-TENG在新颖结构设计、工作机制及提高输出性能的相应方法方面的最新进展。详细讨论了每种模式的基本理论、关键优点和潜在发展。最后，我们为DC-TENG未来面临的挑战提供了指导方针，并为提高其在商业应用中的输出性能提供了策略。
