I.What is Electrochemical double layer
The electrochemical double layer is a fundamental concept in electrochemistry, playing a critical role in the behavior of electrodes in an electrolyte solution. It arises at the interface between a solid conductive surface, such as a metal electrode, and an ionic solution. This interface exhibits unique properties due to the interaction between charge carriers in the solid and the ions in the liquid, leading to the formation of two distinct layers that contribute to the overall electrical behavior of the system. At the microscopic level, when an electric potential is applied to an electrode immersed in an electrolyte, charges accumulate at the surface of the electrode. This accumulation occurs because of the attraction or repulsion of ions from the solution, depending on their charge. The result is a migration of ions towards the electrode surface, leading to the formation of a charged layer adjacent to the electrode, often referred to as the
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