Presentation Information
[11p-N304-7]Effect of Fluorine Surface Coating on Output Characteristics of Droplet Flow-Induced Power Generation Using Native Oxide-Covered Cr/PET Substrates
〇(M1C)Yoka Shu1, Shin-ichi Warisawa1, Reo Kometani1 (1.Univ. of Tokyo, GSFS)
Keywords:
Flow-Induced Power Generation (FiPG),Metal Oxide Film,Fluorine Surface Coating
Droplet Flow-Induced Power Generation (D-FiPG), which utilizes charge transport at solid–liquid interfaces during droplet motion, has attracted attention as a promising energy harvesting technology. In this study, the effect of fluorine surface coating on the output characteristics of D-FiPG was investigated using native oxide-covered Cr/PET substrates. Voltage responses generated by the flow of 75 μL droplets of 0.6 M NaCl solution on a 30° inclined substrate were measured and compared between uncoated and fluorine-coated devices. The fluorine-coated substrate exhibited a higher peak voltage and a shorter voltage-response duration, indicating enhanced droplet mobility. Analysis of the integrated positive and negative output components revealed that the positive generated energy increased by approximately 2.1 times, while the negative component was significantly suppressed. These results suggest that fluorine coating stabilizes droplet transport and promotes unidirectional charge transfer, leading to more efficient electrostatic induction and improved power generation performance. The findings demonstrate the effectiveness of fluorine surface modification for enhancing D-FiPG devices.