Producción Científica Profesorado

Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameters



Mendoza Huizar, Luis Humberto

2012

Mendoza-Huizar, L. H.; Rios-Reyes, C. H. (2012, SEP) Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameters, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 16(9), 2899-2906.


Abstract


Mendoza-Huizar, L. H.; Rios-Reyes, C. H. (2012, SEP) Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameters, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 16(9), 2899-2906.Resumen: Cobalt electrodeposition on polycrystalline palladium was studied at different temperatures using potentiostatic and voltammetric techniques. Temperature effect on kinetics parameters, diffusion coefficient, and charge transfer coefficient was analyzed. The values of nucleation rate and rate constant of the proton reduction reaction (k (PR)) increased with the temperature increment and the applied overpotential. The number of active nucleation sites was slightly affected with temperature increase. At higher temperatures, the larger k (PR) values suggested the proton reduction process is favored. The temperature effect on the values of the transfer coefficient was analyzed and a decrease in its value with the temperature increase was observed. From a Conway plot, it was observed that entropy change is the main factor that controls the kinetics of the reaction in this system.



Producto de Investigación




Artículos relacionados

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a ...

A theoretical quantum study on the distribution of electrophilic and nucleophilic active sites on th...

Nucleation and Growth Kinetics of Electrodeposited Sulfate-Doped Polypyrrole: Determination of the D...

Nucleation and growth of cobalt onto different substrates: Part II. The upd-opd transition onto a go...

Influence of the Crystallinity of the Substrate on Kinetic Parameters of Zinc Electrodeposition Proc...

Zinc Electrodeposition from Chloride Solutions onto Glassy Carbon Electrode

Effect of TiO2-Al2O3 sol-gel supports on the superficial Ni and Mo species in oxidized and sulfided ...

ELECTROCHEMICAL STUDY ABOUT ZINC ELECTRODEPOSITION ONTO GCE AND HOPG SUBSTRATES

Magnetic transition phase diagram of cobalt clusters electrodeposited on HOPG: Experimental and micr...

Morphological and magnetic properties of cobalt nanoclusters electrodeposited onto HOPG