Lee Chen-Hung, Huang Wei-Kang, Lin Meng-Fang, Kuo Yi-Hua, Liu Shih-Jung, Ito Hiroshi
Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital-Linkou, Chang Gung University College of Medicine 33302 Taoyuan Taiwan.
Department of Mechanical Engineering, Chang Gung University 259, Wen-Hwa 1st Road, Kwei-Shan Taoyuan 33302 Taiwan
RSC Adv. 2024 Dec 4;14(52):38416-38425. doi: 10.1039/d4ra07550a. eCollection 2024 Dec 3.
Triboelectric nanogenerators (TENGs) are devices that convert mechanical energy into electrical energy through the triboelectric effect, supplying power to a wide array of advanced sensing and monitoring systems. In this work, we utilized graphene-filled nanofibrous poly(vinylidene difluoride--hexafluoropropylene) (PVDF-HFP) as TENGs, employing electrospinning technology. We examined how the dielectric characteristics and transferred charge of the electrification mat affect the output of TENGs. By including graphene nanofillers, the 15 wt% graphene/PVDF-HFP electrospun nanofiber TENG achieved a peak output voltage of 1024 V and a relevant current density of 1.11 μA cm. The improved performance of the electrospun graphene/PVDF-HFP nanofibrous TENGs could be attributed to increased interface polarization and enhanced charge transfer, indicating more effective seize and storage of triboelectric electrons. Furthermore, the fabricated TENGs remained stable when tested for over 20 000 cycles and were capable of powering an array of 1000 light-emitting diode bulbs. The electrospun graphene-filled nanofibrous TENGs demonstrated significant potential for collecting mechanical energy and supplying power to electronic devices.
摩擦纳米发电机（TENGs）是一种通过摩擦电效应将机械能转化为电能的装置，可为各种先进的传感和监测系统供电。在这项工作中，我们利用填充石墨烯的纳米纤维聚偏二氟乙烯-六氟丙烯（PVDF-HFP），采用静电纺丝技术制备TENGs。我们研究了带电垫的介电特性和转移电荷如何影响TENGs的输出。通过加入石墨烯纳米填料，15 wt%石墨烯/PVDF-HFP静电纺丝纳米纤维TENG实现了1024 V的峰值输出电压和1.11 μA cm的相关电流密度。静电纺丝石墨烯/PVDF-HFP纳米纤维TENG性能的提高可归因于界面极化的增加和电荷转移的增强，这表明对摩擦电电子的捕获和存储更有效。此外，制造的TENGs在超过20000次循环测试中保持稳定，并且能够为1000个发光二极管灯泡阵列供电。静电纺丝填充石墨烯的纳米纤维TENGs在收集机械能和为电子设备供电方面显示出巨大潜力。
