On the dependence of the Nernst diffusion layer thickness on potential and sweep rate for reversible and of the thickness of the charge transfer layer for irreversible processes studied by application of the linear potential sweep method

2006 ◽  
Vol 51 (14) ◽  
pp. 2971-2976 ◽  
Author(s):  
Jaime González Velasco
Keyword(s):  
Charge Transfer ◽  
Layer Thickness ◽  
Sweep Rate ◽  
Irreversible Processes ◽  
Linear Potential ◽  
Sweep Method ◽  
Transfer Layer ◽  
Potential Sweep ◽  
Diffusion Layer Thickness ◽  
Nernst Diffusion Layer

scholarly journals Kinetics of Hydrogen Evolution on Copper Electrode Involving Organic Acids as Proton Donors

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
A. Survila ◽  
S. Kanapeckaitė ◽  
J. Pileckienė ◽  
J. Būdienė
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Total Concentration ◽  
Surface Concentration ◽  
Sweep Rate ◽  
Copper Electrode ◽  
Linear Potential ◽  
Potential Sweep ◽  
Proton Donors ◽  
Kinetics Of

Linear potential sweep (LPS) voltammetry was applied to study the kinetics of hydrogen evolution in solutions containing glycolic, malic, tartaric, and gluconic acids. The CE mechanism of hydrogen evolution was analyzed invoking the 2nd Fick's law equations supplemented by terms that account for chemical interactions between diffusing particles. Acids are considered as components that are capable of releasing hydrated protons taking part in the charge-transfer step. Current peaks observed on LPS voltammograms are in linear dependence onν(νis the potential sweep rate). They obey well-known relationships obtained for simple redox processes, provided that the concentration of oxidant is treated as total concentration of proton donors. Determination of surface concentrations as current density functions makes it possible to transform LPS voltammograms into linear Tafel plots normalized with respect to the surface concentration of hydronium ions. Similar kinetic parameters (α≈0.6andi0≈10 μA cm−2) obtained at pH 3 for all OA solutions indicate that the nature of OA has no noticeable influence on the charge-transfer process.

Investigation of Pd + Co alloys by the linear potential sweep method

1986 ◽  
Vol 208 (1) ◽  
pp. 169-173 ◽  
Author(s):  
T. Mallát ◽  
J. Petró ◽  
S. Szabó ◽  
L. Marczis
Keyword(s):  
Linear Potential ◽  
Sweep Method ◽  
Potential Sweep ◽  
Co Alloys
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