Zhao Zhihao, Dai Yejing, Liu Di, Zhou Linglin, Li Shaoxin, Wang Zhong Lin, Wang Jie
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China.
School of Materials, Sun Yat-sen University, Guangzhou, 510275, China.
Nat Commun. 2020 Dec 3;11(1):6186. doi: 10.1038/s41467-020-20045-y.
As a new-era of energy harvesting technology, the enhancement of triboelectric charge density of triboelectric nanogenerator (TENG) is always crucial for its large-scale application on Internet of Things (IoTs) and artificial intelligence (AI). Here, a microstructure-designed direct-current TENG (MDC-TENG) with rationally patterned electrode structure is presented to enhance its effective surface charge density by increasing the efficiency of contact electrification. Thus, the MDC-TENG achieves a record high charge density of ~5.4 mC m, which is over 2-fold the state-of-art of AC-TENGs and over 10-fold compared to previous DC-TENGs. The MDC-TENG realizes both the miniaturized device and high output performance. Meanwhile, its effective charge density can be further improved as the device size increases. Our work not only provides a miniaturization strategy of TENG for the application in IoTs and AI as energy supply or self-powered sensor, but also presents a paradigm shift for large-scale energy harvesting by TENGs.
作为新时代的能量收集技术，提高摩擦纳米发电机（TENG）的摩擦电荷密度对于其在物联网（IoT）和人工智能（AI）领域的大规模应用至关重要。在此，我们展示了一种具有合理图案化电极结构的微结构设计直流TENG（MDC-TENG），通过提高接触起电效率来增强其有效表面电荷密度。因此，MDC-TENG实现了创纪录的高电荷密度，约为5.4 mC m，这是交流TENG现有技术水平的两倍多，与之前的直流TENG相比则超过了10倍。MDC-TENG实现了设备的小型化和高输出性能。同时，随着设备尺寸的增加，其有效电荷密度可以进一步提高。我们的工作不仅为TENG在物联网和人工智能中作为能量供应或自供电传感器的应用提供了一种小型化策略，还为TENG大规模能量收集带来了范式转变。
