Park Jihyeon, Jo Seungju, Kim Youngsu, Zaman Shakir, Kim Daewon
Department of Electronics and Information Convergence Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Korea.
Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Korea.
Micromachines (Basel). 2022 Feb 26;13(3):380. doi: 10.3390/mi13030380.
Recently, tremendous research on small energy supply devices is gaining popularity with the immerging Internet of Things (IoT) technologies. Especially, energy conversion and storage devices can provide opportunities for small electronics. In this research, a micro-nano structured design of electrodes is newly developed for high performing hybrid energy systems with the improved effective surface area. Further, it could be simply fabricated through two-steps synthesis of electrospinning and glass transition of a novel polystyrene (PS) substrate. Herein, the electro-spun nanofiber of polyacrylonitrile (PAN) and Nylon 66 (Nylon) are applied to the dielectric layer of a triboelectric generator (TENG), while the PAN and polyaniline (PANI) composites is utilized as an electroactive material of supercapacitor (SC). As a result, the self-charging power system is successfully integrated with the wrinkled PAN/PS (W-PAN/PS@PANI)-SC and W-TENG by using a rectifier. According to the fabricated hybrid energy systems, the electrical energy produced by W-TENG can be successfully stored into as-fabricated W-PAN/PS@PANI-SC and can also turn on a commercial green LED with the stored energy. Therefore, the micro-nano structured electrode designed for hybrid energy systems can contribute to improve the energy conversion and storage performance of various electronic devices.
近来，随着物联网（IoT）技术的兴起，针对小型能源供应设备的大量研究日益受到关注。尤其是，能量转换和存储设备可为小型电子产品带来机遇。在本研究中，一种用于高性能混合能源系统的电极微纳结构设计被新开发出来，其有效表面积得到了改善。此外，通过静电纺丝两步合成法以及新型聚苯乙烯（PS）基底的玻璃化转变，该设计能够简便地制备出来。在此，聚丙烯腈（PAN）和尼龙66（Nylon）的电纺纳米纤维被应用于摩擦电发电机（TENG）的介电层，而PAN与聚苯胺（PANI）的复合材料则被用作超级电容器（SC）的电活性材料。结果，通过使用整流器，自充电功率系统成功地与褶皱状的PAN/PS（W-PAN/PS@PANI）-SC和W-TENG集成在一起。根据所制备的混合能源系统，W-TENG产生的电能能够成功存储到所制备的W-PAN/PS@PANI-SC中，并且还能够利用存储的能量点亮一个商用绿色发光二极管。因此，为混合能源系统设计的微纳结构电极有助于提高各种电子设备的能量转换和存储性能。
