The extraction of energy from water in the natural environment has attracted significant interest in energy-harvesting applications in recent years. This study investigates the effects of the electrode placement position and the tilt angle of a platform on the voltage induced by a flow of aqueous NaCl electrolyte solution over a two-dimensional graphene wafer. It is shown that an orthogonal arrangement of the electrodes relative to the electrolyte flow direction maximizes the induced voltage. Further experiments are performed in which the graphene wafers are positioned such that the electrolyte flows over the short and long sides of the electrodes, respectively. The results show that the higher voltage response is obtained when the electrolyte flows through the long side of the electrodes. Finally, an investigation is performed into the voltage induced for various tilt angles from 20° to 60° of the graphene wafers placed on a platform. The charging and discharging time are revealed from experiments for the first time for various tilt angles. Based on the cases studied, the 45° tilt angle induces the highest voltage. Overall, the results presented in this study provide a useful insight into the optimal electrode placement position and tilt angle of a platform for graphene energy harvesting from aqueous sodium chloride solutions.

近年来，在自然环境中从水中提取能量引起了人们对能量收集应用的极大兴趣。这项研究调查了电极放置位置和平台的倾斜角度对二维石墨烯晶片上的NaCl电解质水溶液流动所感应的电压的影响。示出了电极相对于电解质流动方向的正交布置使感应电压最大化。进行进一步的实验，其中放置石墨烯晶片，以使电解质分别流过电极的短边和长边。结果表明，当电解质流过电极的长边时，可获得更高的电压响应。最后，对放置在平台上的石墨烯晶圆从20°到60°的各种倾斜角度所感应的电压进行了研究。首次从各种倾斜角度的实验中得知了充电和放电时间。根据研究的案例，45°倾斜角感应出最高电压。总体而言，本研究中提供的结果为从氯化钠水溶液中收集石墨烯能量的平台的最佳电极放置位置和倾斜角提供了有用的见识。