Electrodeposition of copper on Pt(111) and Pt(100) single crystal surfaces

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.578352· OSTI ID:6258085

Markovic, N M; Ross, Jr, P N ^[1]

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1. Materials Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

The electrodeposition of copper on Pt(100) and Pt(111) in different acid electrolytes was studied by cyclic voltammetry, [ital ex] [ital situ] Auger electron spectroscopy and low energy electron diffraction (LEED). The specific adsorption of Cl[sup [minus]] from HF and HClO[sub 4] solutions was found to have a strong effect on the submonolayer deposition process. LEED results from emersed electrodes indicated that for submonolayer deposition from a chloride free'' solution the copper was growing in islands (or patches'') having the lattice constant of the platinum substrate, i.e., pseudomorphic growth as in vapor deposition of Cu on Pt. In the presence of Cl[sup [minus]], submonolayers of Cu were deposited in the form of a Cu--Cl adlattice. After deposition at either the Nernst potential (one monolayer) or at [similar to]0.2 V negative of it (four monolayers), Cu formed a uniform epitaxial metallic layer with an ordered Cl adlayer on the top of the Cu layer in a structure essentially identical to that for Cl adsorbed from the gas phase onto a bulk Cu crystal to saturation.

• OSTI ID: 6258085
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 11:4; ISSN 0734-2101; ISSN JVTAD6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ANIONS
CHARGED PARTICLES
COATINGS
COPPER
CRYSTALS
DEPOSITION
ELECTRODEPOSITED COATINGS
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROLYTES
ELEMENTS
IONS
LYSIS
METALS
MONOCRYSTALS
PLATINUM
PLATINUM METALS
SURFACE COATING
TRANSITION ELEMENTS
VOLTAMETRY