The IT between the LCO surface and the OHP of the electrolyte encompasses the desolvation/solvation process of Li + and the ion transfer energy, 𝛽, is sensitive to the character and charge state of the electrode as well the electrolyte microenvironment at the interface (Figure ). Three results related to 𝛽 will be highlighted. First, it is found that the reaction is approximately symmetric (i.e., 𝛽 ≈ 𝛽 O (𝑞 = 𝑞 O ) ≈ 𝛽 R (𝑞 = 𝑞 R ), and 𝛼 ≈ 0.5) for the low-energy adsorption states. This is reasonable at OCV conditions given the small deviation from equilibrium 𝜇 (Figure Hence, one can conclude that the solvent effect on 𝜆 is small, both absolute and relative numbers. However, in contrast to the SOC-for which 𝜆 is almost insensitive-the minor variation in 𝜆 with the electrolyte composition has some influences on the relative current densities as discussed towards the end of this letter.