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Nyquist plots of symmetrical cells containing thin (≈60 μm), medium (≈120 μm), and thick (≈190 μm) sulfur cathode coatings in uralumina. A 10 mV perturbation with a frequency range 200 kHz–10 mHz was used. The black segment shows the magnitude of one third of the total resistance associated with electrolyte ion transport through the porous electrode.
