Solla-Gullon, V. Montiel, A. Aldaz, Errors in the use of the Koutecky- Levich plots. Electrochem. Commun. 15, 42 (2012)Vidal-Iglesias F.J., Solla-Gullon J., Montiel V., Aldaz A. Errors in the use of the Koutecky-Levich plots. Electrochem. Commun. 2012; 15 :42–45....
S13–S18). The corresponding Koutecky–Levich (K-L) plots of MoC/Co–N–C-600 nanobelts (inset of Fig. 4c) reveal good linearity that suggests the first-order reaction kinetics in terms of the concentration of dissolved oxygen and electron transfer number (n). The calculated n value of ...
The effect of concentration depletion is generally corrected by an appropriate mass transfer correction (also called the Koutecky–Levich compensation). For example in rotating disk electrode (RDE) experiments using the following equation16, ik=iLi(iL−i) (9) whereiis the measured current andiLis ...
4 Koutecky–Levich plots for H2 oxidation at 0.4 V vs. RHE on the electrodes (Pt-black loading: 20 lg) with several film thicknesses 1.0 8 µm film 4 µm film 0.8 3 µm film 0.2 µm film 0.6 0.4 0.2 Fig. 5 The inverse of Levich intercept as a function of the inverse ...
1). Kinetic currents were calculated via the Koutecky–Levich equation: Ik = (Ilim× I)/(Ilim − I), where Ilim is the limiting current and I is the measured current at a given potential (either 0.9 or 0.93 V were used in this study). Only polarization curves with Ilim...
The ORR activ- ity was estimated using the specific activity jk at 0.90 and 0.95 V(RHE) according to the following Koutecky–Levich equation: 1 11 =+ j jk jl where j and jl are the total and limiting current densities, respectively [35, 36]. All potentials were recorded as RHE. ...
Koutecky-Levich analysis indicates that the oxygen reduction reaction of Pt/C GDE adopts a 4electron transfer process as main process as the main process in electrolyte (O 2 +4H + +4e - →2H 2 O). Therefore, the major causes of the new method for saving energy is that the oxygen...
The Koutecky-Levich equation is a powerful and versatile tool that is commonly used for the correction of mass transport effects in RDE testing to obtain kinetic current densities. With its full derivation given in Ref. [26], the KL equation can be derived from two basic assumptions. The firs...
6. The MA is calculated via the kinetic current calculated by the Koutecky–Levich equation and the Pt mass loading on the working electrode, demonstrating the catalytic ability of the Pt per unit mass. From Fig. 6a, Pt supported by several 3d metal supports (Mn–, Fe– and Co–N–C) ...
To eliminate the difference in the mass transport in the thin film electrode for ring-disk electrode (RRDE) tests, kinetic current densities were obtained by Koutecky-Levich equations. The kinetic current densities at different potentials were translated into Tafel plots in FIG. 6E. More ...