The dissolution of sulfur increases the pore volume, in turn affecting Li + ion flux. To reveal the impact of sulfur dissolution on the microstructural properties, an erosion approach was applied to the sulfur phase to approximate the microstructure change during the discharging process. Figure (b) shows the electrode microstructure after 50% of the sulfur has dissolved. This microstructure is obtained by the erosion of S8 solid particles to the point at which 50% of S8 volume in the entire electrode remains. It can be seen that when 50% of the initial sulfur has been dissolved, the electrode tortuosity is lowered by ca. 22 %. During cell discharging, total dissolution of solid sulfur particles takes place , resulting in a two-phase microstructure; namely, the electrolyte saturated with dissolved sulfur and soluble polysulfides and CBD [Figure ]. This reduces the electrode tortuosity by ca. 35%, compared to the pristine electrode's tortuosity factor. Figure ) shows the evolution of total Li + ion flux as a function of the dissolution of solid sulfur particles and hence the altered microstructure. However, it is important to note that Figure depicts the effect of morphological changes on the Li + ion flux and the potential accumulation/deposition of polysulfides are not considered in obtaining Li + ion flux. Also, as shown by Tan et al., the dissolution of solid sulfur particles is complete by 30% depth of discharge (DoD) . As shown by various researchers the precipitation of solid polysulfides takes place after 80% DoD.