Therefore, a thorough morphology-based analysis is essential for us to understand the impact of electrode heterogeneity and variation on the electrochemical reaction evolution. It is noted that during the discharging cycle, the generation of several polysulfides will present in consecutive steps, as the solubility of Li2S2 and Li2S in the electrolyte is far lower compared to the kinetic production rate; these solid precipitates will deposit on the surface of the porous electrode, and the morphology will change simultaneously as the battery functions, as well as the geometrical porosity, physical properties and ions concentration in the electrolyte. However, in the current model, due to the limitation of software, we were unable to track the dynamic morphological change. To approximate the numerical morphologic change in the process, the following assumptions are applying to the current model: 1. The morphology change of sulfur (dissolved and non-dissolved) is not taken into account, as all the sulfur is assumed to be in the liquid phase.