with values presented in Figure and Tables and. Following Landesfeind et al. and Xu et. al. , we recently reported the effective ion diffusivities in micro and mesopores after dividing the bulk electrolyte diffusivity by NM (Table ). The range of diffusivity aligns with in-situ PFG NMR studies of organic electrolytes in carbons with different pore sizes. We also adopted the similar concept for deriving lDL in pores. Micropores, being smaller in size offer more tortuous networks than mesopores, resulting in higher NM and smaller lDL values shown in Figures and, respectively. With increasing salt concentration, multiple factors shown in Figure influenced NM, resulting in a complex trend. In contrast, the lDL values in pores followed a pattern similar to those in the bulk, displaying a minimum at 10 mol•kg⁻¹. Our calculated lDL values for micro and mesopores closely match the results (~0.4 to 1.2 nm) obtained with different models such as electric double-cylinder capacitors (EDCC) and electric wire-in-cylinder capacitors (EWCC). These EDCC/EWCC models were applied to various activated microporous, mesoporous, templated, and carbide-derived carbons in several aqueous, organic, and ionic liquid-based electrolytes, as reported by Huang et al. and Zuliani et al. The similarity of the values obtained in this work and from EDCC/EWCC models confirm the accuracy of our approach. From the trend of lDL values in the pores, we can infer the expected behavior of the diffuse layer capacitance within the pores to double check the trend of 𝐶 𝑝𝑜𝑟𝑒 ′′ . According to Equation and the EDCC/EWCC models, it can be assumed that the relative permittivity values (Figure ) in the numerator will significantly decrease, while the in-pore lDL in the denominator will concurrently increase at concentrations of 15 and 20 mol•kg⁻¹ for higher values of the Bjerrum length (Figure ). Therefore, this combined effect will lead to a decrease of in-pore diffuse layer capacitance at these concentrations, analogous to the trend seen for nonporous electrode CDL in Figure . Similarly, a likely monotonic decline of the Stern layer capacitance within the pores aligns with the non-porous electrode CSL. From this it can be deduced that the general trend of the theoretical CEDL in the pores reflects the pattern of the lDL in the pores, resulting in a maximum at around 5 or 10 mol•kg⁻¹.