Nucleation of Pb electrodeposits on Ag and Cu

Journal Article · Tue Jan 01 04:00:00 EST 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2113787· OSTI ID:5956861

Farmer, J C; Muller, R H

Initial stages in the electrocrystallization of Pb (up to 200A thick) from 1M NaClO/sub 4/, 0.5 and 5 mM Pb (NO/sub 3/)/sub 2/, pH 3, on Ag(111) and Cu(111) have been investigated by ellipsometry and light scattering during cyclic voltammetry. Optical constants, thickness, valence, and free energy of adsorption of the underpotential deposit have been determined. An optical model which agrees with experimental data for fractional coverage by the underpotential deposit is based on the twodimensional spreading of islands of monolayer thickness. The bulk deposit immediately following formation of the underpotential monolayer involves three-dimensional growth from nucleation centers, even at the 20A level of deposit thickness, and results in a particulate, porous film on top of the underpotential deposit

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory University of California, Berkeley, California
• OSTI ID: 5956861
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:1; ISSN JESOA
• Country of Publication: United States
• Language: English

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CHLORINE COMPOUNDS
COPPER
CRYSTAL GROWTH
CRYSTALLIZATION
DEPOSITION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
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SODIUM COMPOUNDS
SURFACE COATING
THIN FILMS
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