Real-time monitoring of chemical changes in solutions is a crucial aspect for addressing pressing challenges in diverse fields . Applications such as detecting water contaminants, analyzing biomarkers in biological fluids, and ensuring the accuracy of processes as well as the safety of consumables require analytical techniques that are not only accurate and sensitive but rapid, cost-effective, and non-invasive . Electrochemical sensors have emerged as promising candidates due to their affordability, simplicity, and suitability for miniaturization. However, conventional DC-based electrochemical sensors primarily depend on redox reactions, making them unsuitable for substances that do not undergo redox processes. Additionally, these sensors involve electron transfer mechanisms that can degrade the electrode surface over time, reducing their reusability and shortening their operational lifespan . Additionally, these sensors carry the risk of altering the solution composition during measurements. Alternating current (AC) techniques, like electrochemical impedance spectroscopy (EIS), offer deeper insights into electrode-electrolyte interface dynamics, with the potential of enabling the characterization and quantification of electrolyte composition eliminating the limitations of DC methods. When a solid electrode contacts an electrolyte, an interface known as the electric double layer (EDL), a structured arrangement of ions, counter-ions, and solvent molecules forms . The structure of the EDL depends on properties of both the electrode, such as roughness and work function, and the electrolyte, including composition and concentration . While significant progress has been made in characterizing the EDL in non-faradaic region (i.e., in the absence of any redox reaction), its microscopic structure and its correlation with electrochemical signals is not fully understood .