In this study, based on published 1D electrochemical model for LIBs, an electrochemical model for Li-S batteries, considering the cell's conservation of mass, energy, and electrochemical kinetics is proposed . The model is solved via COMSOL Multiphysics simulation. Furthermore, the region with a relatively higher temperature was specified via the spatial and temporal distribution of temperature within the Li-S cell. This will help battery designers improve temperature inhomogeneity and thus improve Li-S batteries' safety and cycle life. Meanwhile, the effects of increased charging rates were systematically investigated via this 1D model. The geometry model for the Li-S single layer pouch cell was shown in Figure , and detailed geometry parameters for the sulfur cathode and Li metal anode were from commonly used Li-S pouch cells and summarized in Table 1 .