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A Filter Paper‐Based Nanogenerator via Water‐Drop Flow
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2019-05-31 , DOI: 10.1002/adsu.201900012
Yuanchao Lu 1 , Hui Wu 1 , Qunqing Yang 2 , Jianfeng Ping 1 , Jian Wu 1 , Jun Liu 3
Affiliation  

With the increase in energy crisis, it is a promising strategy to develop a nanogenerators for harvesting small amounts of energy. Herein, a flexible and robust filter paper‐based nanogenerator (FPNG), fabricated by printing a modified multiwalled carbon nanotubes ink slurry on filter papers with the specific as‐designed shape, is developed. The results show that the streaming voltage and current are induced from the water‐drop flow across the surface of FPNG, such as rainwater. Compared with the energy‐harvesting performance of FPNG under different conditions, the maximum streaming voltage is obtained with 20 mL h−1 injection speed of 1 × 10−3 m NaCl solution at 75° placement angle for quantitative medium speed FPNG. Under optimum conditions, the power reaches to 9.91 ± 1.39 pW per droplet. Then, the streaming voltage and current produced from dropping rainwater onto the FPNG are investigated and the power is 2.4 ± 0.65 pW per droplet. It is assumed that there are abundant pores and oxygen‐containing functional groups on the surface of filter papers with overlapped and crosslinked morphology, providing vast active sites and ion diffusion channels to enhance the electric double layer capacitance. Therefore, FPNG has good prospects for applications in harvesting energy from water‐drops.

中文翻译:

通过水滴流动的基于滤纸的纳米发生器

随着能源危机的加剧,开发一种用于收集少量能源的纳米发电机是一种有前途的策略。本文中,开发了一种柔性,坚固的基于滤纸的纳米发生器(FPNG),它是通过在具有特定设计形状的滤纸上印刷改性的多壁碳纳米管油墨浆液而制成的。结果表明,流过的电压和电流是由穿过FPNG表面(如雨水)的水滴感应出来的。与不同条件下FPNG的能量采集性能相比,在20 mL h -1注入速度为1×10 -3 m时可获得最大流电压放置角度为75°的NaCl溶液,用于定量中速FPNG。在最佳条件下,每个液滴的功率达到9.91±1.39 pW。然后,研究了将雨水滴落到FPNG上而产生的流电压和电流,每滴功率为2.4±0.65 pW。假定滤纸表面上有大量孔隙和含氧官能团,具有重叠和交联的形态,提供了广阔的活性位点和离子扩散通道,以增强双电层电容。因此,FPNG在从水滴中收集能量方面具有良好的应用前景。
更新日期:2019-09-09
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