摩擦电效应
纳米发生器
材料科学
发电机(电路理论)
电气工程
光电子学
电容器
功率(物理)
复合材料
电压
压电
工程类
量子力学
物理
作者
Hyunwoo Cho,Inkyum Kim,Jihyeon Park,Daewon Kim
出处
期刊:Nano Energy
[Elsevier]
日期:2022-05-01
卷期号:95: 107048-107048
被引量:34
标识
DOI:10.1016/j.nanoen.2022.107048
摘要
Electrocoagulation (EC) method has emerged as a state-of-the-art water purifying technology. Here, a self-powered EC system is proposed using a waterwheel hybrid generator (W-HG) based on disk-type triboelectric nanogenerator (D-TENG) and electromagnetic generator (EMG). D-TENG consists of a rotator and stator based on printed circuit board (PCB) technology. With electrospinning and sintering process for polytetrafluoroethylene (PTFE) as a dielectric layer of the D-TENG, the fabricated membrane exhibits superhydrophobic property with a water contact angle of 160.5°, which allows the device to show self-cleaning property and to operate at high relative humidity. Additionally, a fractal-design based switched-capacitor-converter (FSCC) is utilized with the high-frequency and high-output based D-TENG to operate commercial electronic devices. The hybridized W-HG exhibits 1.75 mW of the average power at the matching load resistance of 400 Ω. An energy conversion efficiency of the device between rotational input energy and electrical output energy marks at 8.75%. The D-TENG and EMG are combined with a rotating waterwheel to demonstrate their ability to power an EC purification system. A power management integrated circuit (PMIC) is utilized with the D-TENG for high current input to the EC module. Finally, the W-HG successfully purifies wastewater with a high removal ratio above 95% for 18 h.
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