Randles-Sevick's analysis provides additional insight into the impact of BNC on the Liion diffusion coefficient (DLi). The 0.01 M BNC electrolyte exhibited a 46.3% improvement in the Li-ion diffusion compared to the baseline. This improvement is attributed to the higher conversion kinetics for reducing short-chain polysulfides (A2), which is the rate-limiting step. This enhancement is evidenced by an augmentation in the absolute values of the slope from linear fitting, increasing from 5.4 to 7.9 as depicted in Figure . The plot of current versus square root of scan rate for the anodic process (B1 and B2 peaks) is displayed in Figure , and the fitting results for all the cathodic and anodic peaks are summarized in Table . The findings indicate that Randles-Sevcik analysis offers more valuable insights into the intricate kinetics of short-chain polysulfides conversion than CV due to the complex nature of the BNC-polysulfides system.