Producción Científica Profesorado

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



Mendoza Huizar, Luis Humberto

2012

Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameters L. H. Mendoza-Huizar and C. H. Rios-Reyes. JOURNAL OF SOLID STATE ELECTROCHEMISTRY 2012, DOI: 10.1007/s10008-012-1722-7.


Abstract


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 (kPR) 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 kPR 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

Análisis del Comportamiento Presión-Temperatura en la Transición Isotrópico-Nemático del p-Azoxianis...

ELECTROCHEMICAL STUDY ABOUT ZINC ELECTRODEPOSITION ONTO GCE AND HOPG SUBSTRATES

Theoretical and Experimental Study of Cobalt Nucleation and Growth onto Gold Substrate with Differen...

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

The role of temperature in copper electrocrystallization in ammoniachloride solutions

THEORETICAL STUDY ON THE MODIFICATION OF ACTIVE SITES IN GOLD SURFACES MODELED AS FINITE CLUSTERS: I...

Synthesis of Zn compounds derived from 1H-benzimidazol-2-ylmethanamine

Electrochemical kinetic study about cobalt electrodeposition onto GCE and HOPG substrates from sulfa...

Analysis of the experimental pressuretemperature behavior in the isotropicnematic phase transition f...

Cobalt Electrodeposition Process from Electrolytic Baths based on CoSO4 and (NH4)2SO4. Influence of ...