Numerical simulation of voltammetry focusing on the effect of initial concentration of products in reversible systems with complex stoichiometry

The effect of initial concentration of products in a general reaction of reversible process with complex stoichiometry expressed as m O + n e − ai q R was evaluated using numerical simulations with various complex stoichiometric coefficients m and q of oxidized (O) and reduced (R) species, respectiv...

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Bibliographic Details
Published in:Russian journal of electrochemistry 2012-09, Vol.48 (9), p.887-894
Main Authors: Ito, Hiroshi, Hasegawa, Yasuo, Ito, Yasuhiko
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Electrochemistry
Physical Chemistry
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Summary:The effect of initial concentration of products in a general reaction of reversible process with complex stoichiometry expressed as m O + n e − ai q R was evaluated using numerical simulations with various complex stoichiometric coefficients m and q of oxidized (O) and reduced (R) species, respectively, and with various initial concentrations. In the simulations, the transform of voltammograms according to changes in the initial concentrations were characterized by the parameter γσ (= c 0 *( D O ) 1/2 / c R * ( D R ) 1/2 ) for any stoichiometric system. Based on the simulation results, empirical relations were obtained for (1) peak potential involving parameters for stoichiometry ( m and q ) and for the initial conditions (γσ), and (2) peak current.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193512090066