INQUIMAE   12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
Experimental and Theoretical study of the onset of the growth of an irregular metal electrodeposit
Autor/es:
GRACIELA GONZÁLEZ, MICHEL ROSSO, ELISABETH CHASSAING, JEAN-NÖEL CHAZALVIEL
Revista:
ELECTROCHIMICA ACTA
Editorial:
ELSEVIER SCIENCE
Referencias:
Año: 2007 vol. 53 p. 141 - 141
ISSN:
0013-4686
Resumen:
Trabajo completo del 4th Int. Symp. Electrochemical Processing of Tailored Materials, 3-5 Oct. 2005, Kyoto University, Japan (a aparecer en Electrochimica Acta bajo procesos habituales de referato de dicha publicación ). Abstract Electrseposition of a metal can produce aggregates with very irregular morphologies, in particular dendrites. In order to better understand these phenomena, we studied the preliminary stage of copper growth from copper sulfate by in situ optical experiments and impedance spectroscopy. Experiments were performed in a thin layer cell put in a vertical position, with cathode on top. Using a vertical cell instead of a horizontal one tends to stabilize the electrochemical system. The concentration measured by optical absorption is in agreement with theoretical prediction at the onset of polarization. Close to the limiting spectra could be filter either using a simple equivalent circuit at low current density, or more complex calculation at high current density.