Li Ze Bin, Li Hua Yang, Fan You Jun, Liu Lu, Chen Yang Hui, Zhang Chi, Zhu Guang
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor , Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , Beijing 100083 , China.
School of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , China.
ACS Appl Mater Interfaces. 2019 Jun 5;11(22):20370-20377. doi: 10.1021/acsami.9b04321. Epub 2019 May 22.
The rapid development of flexible and wearable electronics calls for a sustainable solution of the power supply. In recent years, the energy-harvesting triboelectric nanogenerator (TENG) has attracted increasing attentions due to its sustainability, flexibility, and versatility. However, achieving both high electric output and flexibility at the same time remains to be a challenge. In this work, we reported a corona charging enhanced flexible triboelectric nanogenerator (EF-TENG) to harvest mechanical energy from human motions. The EF-TENG relied on the repeated contacts between a poly(tetrafluoroethylene)/poly(dimethylsiloxane) nanocomposite electret and a nanofibers/AgNWs electrode on arrayed silicone pyramids. When the EF-TENG (3.5 × 3.5 cm) was pressed, the open-circuit voltage ( V), the short-circuit current ( I), and the power density could reach 275 V, 9.5 μA, and 802.31 mW/m, respectively. The V of the EF-TENG was improved by 244% compared to the device of which the electret was not corona charged. Major factors that affected the electric output of the EF-TENG were discussed, including the height of the pyramids, the configuration of the pyramids array, and the properties of the electret nanocomposite. The EF-TENG only had an overall thickness of 1.3 mm and a weight of 1.7 g, making it especially suitable to be attached onto human body for harvesting mechanical energy from biomechanical motions.
柔性和可穿戴电子设备的快速发展需要一种可持续的电源解决方案。近年来，能量收集摩擦纳米发电机（TENG）因其可持续性、灵活性和多功能性而受到越来越多的关注。然而，同时实现高电输出和灵活性仍然是一个挑战。在这项工作中，我们报道了一种电晕充电增强型柔性摩擦纳米发电机（EF-TENG），用于从人体运动中收集机械能。EF-TENG依靠聚四氟乙烯/聚二甲基硅氧烷纳米复合驻极体与排列在硅金字塔上的纳米纤维/银纳米线电极之间的反复接触。当EF-TENG（3.5×3.5厘米）被按压时，开路电压（V）、短路电流（I）和功率密度分别可达275伏、9.5微安和802.31毫瓦/平方米。与驻极体未进行电晕充电的器件相比，EF-TENG的V提高了244%。讨论了影响EF-TENG电输出的主要因素，包括金字塔的高度、金字塔阵列的配置以及驻极体纳米复合材料的性能。EF-TENG的总厚度仅为1.3毫米，重量为1.7克，使其特别适合附着在人体上，以从生物力学运动中收集机械能。
