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| Format: | Artículo científico |
| Language: | en |
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Sociedad Química de México
2009
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47512356007 |
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Table of Contents:
- Zinc Electrodeposition from Chloride Solutions onto Glassy Carbon Electrode Luis Humberto Mendoza-Huízar Clara Hilda Rios-Reyes María Guadalupe Gómez-Villegas Multidisciplinaria (Ciencias Naturales y Exactas) Zinc quasi reversible nucleation kinetic study An electrochemical study of zinc deposition was carried out in baths containing 0.5 M ZnCl2 and 0.4 M H3BO3. From the voltammetric study it was found that, in our experimental conditions, zinc electrodeposition is quasi-reversible and occurs under charge transfer control. The average coefficient diffusion calculated was D = 7.14 × 10-6 cm2s-1 while the standard constant at electrode charge was 8.78 × 10-3 cms-1. The nucleation and growth parameters determined from the potentiostatic study showed that, at bigger overpotentials, a vertical growth is favored, suggesting a dendritic growth. The critical cluster's size calculated was 2, indicating that each active site is formed by two zinc atoms on the glassy carbon electrode (GCE) surface, while the AG for the formation of stable nucleus was 1.35 × 10-20 J/nuclei. The Scanning Electron Microscopy images showed thin platelets of hexagonal crystals and dendrites at lower and higher overpotentials applied, respectively. 2009 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47512356007 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.4 Vol.53