Kinetics and Mechanisms of Electrode Reactions

Electroanalytical chemists and others are concerned not only with the application of new and classical techniques to analytical problems, but also with the fundamental theoretical principles upon which these techniques are based. Electroanalytical techniques are proving useful in such diverse fields as electro-organic synthesis, fuel cell studies, and radical ion formation, as well as with such problems as the kinetics and mechanisms of electrode reactions, and the effects of electrode surface phenomena, adsorption, and the electrical double layer on electrode reactions. 

To appreciate how the time-scale of the cyclic voltammogram, r, is a function of the scan rate v, variation of v therefore allows insights into the kinetics and mechanisms of electrode reactions. ... 

Fundamentals of kinetics and mechanism of electrode reactions 4.4 An expression for the rate of electrode reactions... 

Determine kinetics and mechanisms of electrode reactions shown to be potentially useful (i.e., carbon monoxide and dioxide reduction, alkali metal deposition, solution redox reactions, and oxygen reduction) to permit the design of highly efficient electrolytic cells (55)... 

Conduct research on the kinetics and mechanism of electrode reactions in low temperature fuel eells. Develop new eleetroeatalysts using a materials-by-design approaeh. 

Like the RRDE (see Sect. 2.4.2.2), the DCE has also been extensively used to study the kinetics and mechanisms of electrode reactions involving following chemical reactions. A good example is the electrooxidation of 4-amino-A, N-dimethylaniline (ADMA), which proceeds by an EC reaction in basic aqueous solution [71]. 

Recent interest has focused especially on the role of the coupled chemical steps mentioned above in determining the overall kinetics and mechanisms of electrode reactions. Although this leads to an increase in the amount of chemical information that can be obtained, it may also lead to various complications and ambiguities. Schematically, a complex ion which is normally electroinactive itself dissociates to form an electroactive species O, viz.. 

Studies grouped under this general heading are concerned with the kinetics and mechanisms of electrode reactions. They are to be distinguished from thermodynamic studies, based upon reversible cells and electrode potentials in which, by definition, systems at equilibrium are investigated. 

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