Hi S. Barzi,

Kinetic parameters are mainly related to the electrode reaction rate, such as diffusion coefficient (D) and the number of active sites (N) of the electrode material. However, thermodynamic parameters are related to the feasibility of the electrode reaction, such as the potential.

for kinetics you need to understand tafel analysis and reaction orders of the electrochemical reactions

I'm not sure if I understand your question. Catalysts don't affect the thermodynamic balance of reactions, only kinetics.

agree with Jukka Salminen

Thermodynamics concerns with (thermodynamics) equilibrium, i.e., where there is a single temperature, pressure, species concentration, etc., all over the system, which remain invariant in time. Kinetics parameters are those corresponding to parameters outside the thermodynamics equilibrium, i.e., not necessarily a single temperature, pressure, species concentration, etc., and therefore changing in time to reach the equilibrium. Kinetics concerns directly with the speed of these changes. In slow electrochemical processes, concentration and electrical potential gradients, among others, appear, where diffusion coefficients and overpotentials play a significant role; these are typical kinetic parameters. While in fast electrochemical processes the systems can reach the equilibrium so rapidly that gradients in above parameters are so insignificant that the parameters are almost the same all over the systems at any moment. In such cases, concentrations, electrochemical potential and others parameters are equal or close to the thermodynamics values.

Complement. Not to be confused.

In my previous answer, where it says; "remain invariant in time" (3th line), it better says: "remain invariant in time under a given condition".

And where it says: "insignificant that the parameters are almost the same all over the systems at any moment" (3th line from below) , it better says: "insignificant that the parameter values are almost the same all over the system at any new condition in each moment"

In general the polarisation studies discussed about kinetics which occured in MS surface and thermodynamic parameters i.e. enthalpy did not relate to polarization measurments.