Electrochemical measurements of the interfacial kinetics of LIB AMs at high current densities (i.e., > 10 mA cm -2 ) have only rarely been reported in the literature . Several electrochemical techniques have been employed for such measurements, including chronopotentiometry, chronoamperometry, cyclic voltammetry, and EIS. Other mathematical models besides the BV equation have also been proposed to fit the experimental data from these measurements . In the literature, there are many conflicting reports, and there is not a clear consensus on the validity of the various experimental methods and theoretical models employed. In our previous work, it was found that the accuracy of some of these measurements from the literature may be questionable due to experimental errors, including uncompensated ohmic resistance and/or counter electrode polarization, or impedance artifacts causes by the counter and/or reference electrode in 3-electrode cells . We also developed a novel pseudosteady-state extrapolation (S3E) approach for Tafel analysis, which enables direct measurement of the apparent BV kinetic parameters at high current densities through simple chronopotentiometry experiments. Surprisingly, it was found that LiFePO4 (LFP) electrodes obey the BV equation with an apparent α value of ~ 1.5 for both the anodic and cathodic reactions, but due to "double Tafel slope" behavior arising from a non-uniform current distribution, the true α value for the interfacial charge-transfer reaction of LFP was shown to be ~ 3 . This result is fundamentally inconsistent with the nearly universal assumption of α ≈ 0.5 in the literature, and with the classical theories of electron-transfer reactions on which this assumption is based . In the context of this finding, and the lack of consensus in the literature, we believe it is necessary to critically re-examine the quantitative models and experimental methods which are used to measure the interfacial chargetransfer kinetics in LIBs.