OPTICAL ANALYSIS OF ION DYNAMICS IN A BATTERY
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RFBs have emerged as a promising electrochemical energy storage technology capable of storing renewable energy sources with long charge-discharge cycle life. As a result, battery monitoring systems have become highly significant, particularly in battery research, to evaluate the performance of battery components or materials after many cycles of operation. In this study, we explore the dynamics of the ions within the electrode when the cell is linked to a potential since this parameter can provide information on the electrochemical performance, indicating the reversibility of the ions during operation. The dielectric characteristics of ions, which react to electric potentials, are utilized to track ion movement within the cell using optical microscopy. This property is connected to the polarizability of active particle valence/conduction electrons in electrodes. The cell will be tested using three different electrolytes; NaCl, FeCl2 and FeCl3. The laser beam is shone at electrochemically operating battery particles as they store or release ions, and the scattered light is analysed. According to the experimental results, half-cells with three different electrolyte solutions may flow ions from one electrode to another with currents ranging from 6 μA to 0.5 mA. The modulation signal at 1 Hz is applied to the cell, and the FFT technique is utilized to determine if the ion response can be monitored optically. However, the response of ions to potential changes is unnoticeable visually. Because the scatter signal from the ions is too faint to be caught by the camera, the amplitude noise from the light source becomes more dominating.