Consequently, a more sophisticated in situ EIS investigation was executed to scrutinize the activation energy at various depths of discharge (DoD), unveiling nuanced kinetics information for each polysulfide conversion step. Coin cells with three distinct electrolytesbaseline, 0.01 M, and 0.11 M BNC containing electrolytes-were meticulously prepared and discharged at a C-rate of C/20 across temperatures ranging from 273 to 333 K at 15 K intervals. EIS measurements were acquired repeatedly after discharging the cell for one hour until the cell reached the discharge cutoff voltage. The voltage discharge profiles are illustrated in Figures . Nine specific locations were strategically chosen for the subsequent EIS measurements. These locations were carefully selected to ensure that the analysis of EIS data captures a representative and statistical significance at comparable DoD across each electrolyte system. The EIS data and corresponding fitting results are depicted in Figures . Figure presents the detailed EIS data and corresponding fitting results obtained at room temperature for the three electrolytes. The measurements were conducted at DoD ranging from 59.5% to 66.1%, a region expected to exhibit the most intensive short-chain polysulfide conversion. The EIS results unveil that the 0.01 M BNC-containing electrolyte exhibits the lowest charge transfer resistance (Rct), with the diffusion portion (Wwarburg) displaying a non-uniform trend compared to the baseline electrolyte. This further underscores the intricacy of Li-ion diffusion in BNCpolysulfides systems, as observed in the CV experiments.