A full-packaged rolling triboelectric-electromagnetic hybrid nanogenerator for energy harvesting and building up self-powered wireless systems. (February 2019)

• Record Type: Journal Article
• Authors: Yang, Hongmei; Wang, Mingfeng; Deng, Mingming; Guo, Hengyu; Zhang, Wei; Yang, Huake; Xi, Yi; Li, Xiaogan; Hu, Chenguo; Wang, Zhonglin
• Is Part Of: Nano energy. Volume 56(2019)
• Page Start: 300
• Page End: 306
• Publication Date: 2019-02
• Subjects: Full-packaged -- Hybrid triboelectric nanogenerator -- Self-powered -- Wireless systems; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2018.11.043
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: The newly invented triboelectric nanogenerator (TENG) shows a significant potential to be a powerful technology for converting mechanical energy into electricity as a complementary usage for solving our future energy demanded for micro- and macro- grid. However, packaging and robustness are critical factors for TENG toward practical applications since the performance of TENG is affected by environmental conditions such as humidity. Here, a full-packaged waterwheel-like rolling triboelectric–electromagnetic hybrid nanogenerator (TEHNG) for harvesting mechanical energy in harsh environment has designed. The integrated silicone rubber-magnet rods and electrodes laminated by a layer of nylon film, which worked as the triboelectric material, are used to fabricate a rolling friction free-standing triboelectric layer mode triboelectric nanogenerator (RFS-TENG) and combining with copper coils subtly, electromagnetic generator (EMG) is achieved. The rolling friction causes almost no damage to the triboelectric layers and there is no obvious normalized current decay found after 3-days continuous working at 0.5 Hz. Thus, this novel design makes the TEHNG easier to be packaged, and prevent from water interference revealing a superior robustness. It is also found that the developed TEHNG broadens the working frequency range as TENG can work more effectively for converting the mechanical energy at lower-frequencies less than 5 Hz energy scavenging while EMG can work much better at higher-frequencies above 5 Hz. Moreover, combining with hand shaking and water wheel, the device can be demonstrated to collect the energy of handy and water-flow flexibly. Furthermore, using current output signals of the EMG, a self-powered wireless frequency and revolution sensor systems are also demonstrated. This work presents a new platform of hybrid generator for harvesting mechanical energy in harsh environments with several desirable features such as the broadened frequency bands, better portability and for building up self-powered wireless sensor systems. Graphical abstract: A full-packaged waterwheel-like rolling triboelectric–electromagnetic hybrid nanogenerator (TEHNG) for converting mechanical energy in harsh environments (such as underwater) into electricity to power electric devices is attained. The design of this unique structure has broaden the working frequency range availably and made it easier to be packaged to avoid the influence of performance by environment conditions and revealed superior robustness. Utilizing the output signal's intrinsic characteristics of EMG part, a self-powered wireless sensor system has been fabricated for accurately on line supervision of frequency and revolution of the device. Highlights: Fully-enclosed structure makes the device be operated in harsh environment and more robust. Combing TENG and EMG, the hybridized device can greatly broaden working frequency band. Demonstrated applications in self-powered wireless frequency and revolution sensor systems.