Niu Jiaxuan, Xu Wenjie, Tian Kaiyi, He Gang, Huang Zhengyong, Wang Qiang
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, No. 174 Shazhengjie, District Shaping, Chongqing 400044, China.
Polymers (Basel). 2020 Aug 27;12(9):1936. doi: 10.3390/polym12091936.
In this paper, the superhydrophobic coating was prepared by spraying the composites of fluorocarbon emulsion and nanosized silica on the conductive glass sheet for the triboelectric energy harvesting from water droplets. The low surface energy of fluorine in the fluorocarbon emulsion and nanosilica renders the coating with the static contact angle and sliding angle of 156.2° and 6.74°, respectively. The conductive aluminum tape was attached on the surface of the superhydrophobic coating to complete the circuit constituted with the aluminum electrode, charged superhydrophobic coating, and the conductive glass sheet. During the contact electrification with the bouncing water droplet, the superhydrophobic coating with the aluminum electrode can obtain the electric energy with an open-circuit voltage of 20 V and short-circuit current of 4.5 μA, respectively. While the control device only produced an open-circuit voltage of 0.2 V. The generated power by one drop was enough to light up 16 commercial LEDs. Results demonstrate that the fluorocarbon/silica composite superhydrophobic coating is potentially a strong candidate for scavenging energy in sliding mode from raindrops.
在本文中，通过将碳氟化合物乳液和纳米二氧化硅的复合材料喷涂在导电玻璃板上制备了超疏水涂层，用于从水滴中收集摩擦电能量。碳氟化合物乳液中的氟和纳米二氧化硅的低表面能使涂层的静态接触角和滑动角分别为156.2°和6.74°。在超疏水涂层表面贴上导电铝带，以完成由铝电极、带电超疏水涂层和导电玻璃板构成的电路。在与弹跳水滴接触起电过程中，带有铝电极的超疏水涂层分别可获得开路电压为20 V、短路电流为4.5 μA的电能。而对照装置仅产生0.2 V的开路电压。一滴水滴产生的电能足以点亮16个商用发光二极管。结果表明，碳氟化合物/二氧化硅复合超疏水涂层在从雨滴的滑动模式中 scavenging energy方面可能是一个强有力的候选材料。 （注：scavenging energy 此处可能有误，推测可能是“收集能量”之类意思，但按要求未作更改）
