Rana S M Sohel, Rahman M Toyabur, Salauddin M, Sharma S, Maharjan P, Bhatta T, Cho Hyunok, Park Chani, Park Jae Yeong
Department of Electronic Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea.
ACS Appl Mater Interfaces. 2021 Feb 3;13(4):4955-4967. doi: 10.1021/acsami.0c17512. Epub 2021 Jan 21.
Understanding of the triboelectric charge accumulation from the view of microcapacitor formation plays a critical role in boosting the output performance of the triboelectric nanogenerator (TENG). Here, an electrospun nanofiber-based TENG (EN-TENG) using a poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE)/MXene nanocomposite material with superior dielectric constant and high surface charge density is reported. The influence of dielectric properties on the output performance of the EN-TENG is investigated theoretically and experimentally. The fabricated EN-TENG exhibited a maximum power density of 4.02 W/m at a matching external load resistance of 4 MΩ. The PVDF-TrFE/MXene nanocomposite improved the output performance of the EN-TENG fourfold. The EN-TENG successfully powered an electronic stopwatch and thermo-hygrometer by harvesting energy from human finger tapping. Moreover, it was utilized in smart home applications as a self-powered switch for controlling electrical home appliances, including fire alarms, fans, and smart doors. This work presents an effective and innovative approach toward self-powered systems, human-machine interfaces, and smart home applications.
从微电容器形成的角度理解摩擦电荷积累对于提高摩擦纳米发电机（TENG）的输出性能起着关键作用。在此，报道了一种基于静电纺丝纳米纤维的TENG（EN-TENG），其使用具有优异介电常数和高表面电荷密度的聚（偏二氟乙烯-三氟乙烯）（PVDF-TrFE）/MXene纳米复合材料。从理论和实验两方面研究了介电性能对EN-TENG输出性能的影响。所制备的EN-TENG在4 MΩ的匹配外部负载电阻下表现出4.02 W/m的最大功率密度。PVDF-TrFE/MXene纳米复合材料使EN-TENG的输出性能提高了四倍。EN-TENG通过收集人手指敲击的能量成功为电子秒表和温湿度计供电。此外，它还被用作智能家居应用中的自供电开关，用于控制包括火灾报警器、风扇和智能门在内的家用电器。这项工作为自供电系统、人机界面和智能家居应用提供了一种有效且创新的方法。
