which is identical to the previously derived expressions in Eqs. (17) and (19). Thus, as expected, the kinetic model parameters of the Butler-Volmer model must fulfill the same relationships as the corresponding fundamental kinetic parameters defined by partial deriva-tives of the experimental kinetic currents (cf. Eqs. ( ), (8), and ( )). The values of m HOR and m HER obtained from Eqs. ( ) and ( ), respectively, are also presented in Table ,