The principle of calculating the tafel slope from the LSV test

Good heroes, due to the organic hydrogenation reaction of organic matter I made, and then calculated the TAFEL slope when testing the electrochemical chemistry. This value is a bit large, about 700 MV/DEC. As a result, the reviewer is now asking how Tafel is calculated, and how is this value so big? What is the meaning, so come here for help, TAFEL's theoretical calculation method, Xiaomi I found on the Internet that the TAFEL slope calculation method in electrochemical corrosion is as follows:

The analysis method of potential polarization curve analysis method again Called Tafel's external push method, TAFEL polarization curve method, referring to the relationship between the number of current density in the electrical chemical reaction and the electrode potential, that is, e \u003d a+〖b*log〗 \u0026#8289; Norm) is an empirical formula. A series of contributions of Stern [5] in 1957 made this method based on a solid theory and experiments. In the Butler -volmer equation I \u003d i_0 [e^(\u0026#61537; nf (e-E_0)/RT) -e^(-(1-\u0026#61537nf (E-E_0))] (I_0 is the i_0 is for Exchange current density, E_0 is a balanced potential, F is Fara Date, \u0026#61537; is the quality coefficient, n is the electrical number), for the half battery, when the static opening state, the reversible reaction of the cathode/anode is ignored ignored Regardless of the time, the equivalent on both sides of the equation takes the pairs and get the Tofel formula E \u003d a+b*log \u0026#8289; i, when i_0 \u003d i_corr, e_0 \u003d e_corr, get e_corr \u003d A+b*log \u0026#8289; i_corr] [6], corrosion rate v (mm \u0026#61487; a) \u003d k*i_corr*(m/n \u0026#61554, where K is the converted constant 3.273 × 10-3 mm/(μA \u0026#8226; cm \u0026#8226; a ), I_CORR (μA/CM2) is the corrosive current density, M is the relative atomic quality of the material (Fe \u003d 55.85 g), n is the number of electrons transferred during the corrosion process, \u0026#61554; -3.


But I do n’t know that this should not be used to test LSV to calculate the tafel slope. The hydrogen is the guidance of the passing heroes.