Electrochemical impedance spectroscopy (EIS) has emerged as a powerful characterization technique with applications spanning energy and medicine . The widespread adoption of EIS can be attributed to its non-invasive nature, operational simplicity, and remarkable ability to probe electrochemical processes across a broad frequency range (from mHz to MHz) . However, measurements at low frequencies (< 1 Hz) present significant practical challenges due to their inherently long duration, as the experimental time scales inversely with the sampled frequencies. This extended measurement period poses particular challenges when characterizing closed systems.