Izvorni znanstveni članak

New Stationary Methods for Studying the Kinetics of Redox Reactions Occurring at Inert Semiconductor/Redox Electrolyte Electrodes. II. The »a ∩ P« Method

Sergiu Borca ; R&D National Institute of Electrochemistry and Condensed Matter, Spi. Independentei No 202, Bucharest - 77208, Romania
Nicolae Bonciocat ; R&D National Institute of Electrochemistry and Condensed Matter, Spi. Independentei No 202, Bucharest - 77208, Romania
Iuliu Ovidiu Marian ; Babes Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, Cluj-Napoca 3400, Romania
Liviu Oniciu ; Babes Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, Cluj-Napoca 3400, Romania

Sažetak

In this second paper an other »intersection« method is theoretically grounded. The method is symbolized »a ∩ P«, and it is based on the simultaneously changing of both the activity (activities) of one (or more) electrochemical active species (a), and the polarization (P), of the multielectrode: inert semiconductor / redox electrolyte. Equations for the potentiostatic, respective galvanostatic »a ∩ P« methods have been deduced, and some important kinetic and electroanalytic applications, especially those referring to the inert metallredox electrolyte unielectrodes are given. These methods permit not only to determine the kinetic parameters, but also to separate the total current density j(U) into the two partial current densities j+(U), j-(U), irrespective of the electrode potential U. Finally, the expression resulted for the specific admittance is equivalent to that obtained in the first paper by using the theory of the »L ∩ P« method; this demonstrates the correctness of both »L ∩ P«, and »a ∩ P« theories.

Ključne riječi

kinetics of redox reactions; multielectrodes; activities; polarization; inert semiconductor/redox electrolyte

Hrčak ID:

132064

URI

https://hrcak.srce.hr/132064

Datum izdavanja:

5.6.2000.

Posjeta: 541 *