Vu Duy Linh, Le Chau Duy, Ahn Kyoung Kwan
Fluid Power & Machine Intelligence (FPMI) Laboratory, School of Mechanical Engineering, University of Ulsan, 93, Daehak-ro, Nam-gu, Ulsan 44610, Korea.
Polymers (Basel). 2022 Feb 28;14(5):960. doi: 10.3390/polym14050960.
Liquid-solid triboelectric nanogenerator (TENG) has been great attention as a promising electricity generation method for renewable energy sources and self-powered electronic devices. Thus, enhancing TENG performance is a critical issue to be concerned for both practical and industrial applications. Hence in this study, a high-output liquid-solid TENG is proposed using a polyvinylidene fluoride surface polarization enhancement (PSPE) for self-powered streamflow sensing, which shows many advantages, such as adapt to the sensor energy requirement, multiple parameters sensing at the same time, eliminate the influence of ion concentration. The TENG based on PSPE film has the maximum power density of 15.6 mW/m, which is increased by about 4.7 times compared to commercial PVDF-based TENG. This could be attributed to the increase of the dielectric constant and hydrophobic property of the PVDF film after the surface polarization enhancement process. Furthermore, the PSPE-TENG-driven sensor can simultaneously monitor both the physical and chemical parameters of the streamflow with high sensitivity and minimum error detection, which proves that the PSPE-TENG has enormous potential applications in self-powered streamflow sensing.
液固摩擦电纳米发电机（TENG）作为一种用于可再生能源和自供电电子设备的有前景的发电方法，已受到广泛关注。因此，提高TENG的性能是实际应用和工业应用中都需要关注的关键问题。因此，在本研究中，提出了一种使用聚偏氟乙烯表面极化增强（PSPE）的高输出液固TENG，用于自供电水流传感，它具有许多优点，如适应传感器能量需求、同时进行多参数传感、消除离子浓度的影响。基于PSPE薄膜的TENG的最大功率密度为15.6 mW/m²，与商用聚偏氟乙烯基TENG相比提高了约4.7倍。这可归因于表面极化增强处理后PVDF薄膜的介电常数和疏水性增加。此外，PSPE-TENG驱动的传感器能够以高灵敏度和最小误差检测同时监测水流的物理和化学参数，这证明PSPE-TENG在自供电水流传感方面具有巨大的潜在应用。
