Transfer coefficient anodic

The quantity a is the anodic transfer coefficient-, the factor l/F was introduced, because Fcf> is the electrostatic contribution to the molar Gibbs energy, and the sign was chosen such that a is positive - obviously an increase in the electrode potential makes the anodic reaction go faster, and decreases the corresponding energy of activation. Note that a is dimensionless. For the cathodic reaction ... 

Both contributions to the current obey the Butler-Volmer law. The current flowing through the conduction band has a vanishing anodic transfer coefficient, ac = 0, and a cathodic coefficient of unity, /3C — 1. Conversely, the current through the valence band has av — 1 and j3v = 0. Real systems do not always show this perfect behavior. There can be various reasons for this we list a few of the more common ones ... 

The notation of the transfer coefficients differs in many sources. Some texts use p or (1-P) in place of a. Others use a for the anodic transfer coefficient and p for the cathodic transfer coefficient. Transfer coefficients are typically close to... 

The equilibrium potential value was 0.683 V vs. SHE. Assuming that the reaction is first order with respect to hydroquinone, determine the anodic transfer coefficient and exchange current density. (Gokjovic)... 

Although the anodic term is dependent both on the hydrogen peroxide concentration and on the hydroxide ions concentration, the theoretically predicted value of the anodic transfer coefficient, i.e. 1, is twice that at the experimentally observed value. Moreover, Equation 4.36 predicts that the anodic current depends on the concentration of dissolved oxygen, which is not observed experimentally. When k 2 k3 is assumed, this mechanism also should consequently be rejected. 

From the slope of the linear regression curve in Figure 49, the anodic transfer coefficient... 

Similar to the discussion for stage II, both cathodic and anodic transfer coefficients for the stage I PEVD sample can be obtained from the peak potential shifts resulting from changing... 

Table 5. Comparison of the Cathodic and Anodic Transfer Coefficients from the...

Ni molar flux of species i, moles per square meter second a anodic transfer coefficients for Butler-Volmer equation,... 

Qualitatively similar conclusions can be reached for the oxidation of tropilidene where the first charge transfer is relatively slow with a small anodic transfer coefficient ... 

Note that the top and bottom signs in the sign combinations or T in Eqn. 330 correspond to reduction and oxidation, respectively. Note also that the quantity E 2 denotes the reversible voltammetric half-wave potential emd a represents either the cathodic or anodic transfer coefficient ac or a a, depending on the context. Furthermore and denote the apparent diffusion coefficients for reduction and oxidation. We see that a plot of... 

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