EQCM and Stress Analyses of Electrodeposition Process Accompanying Potential Oscillations

摘要

It has been recently reported [1] that the Cu/Cu-2O multilayer is electrodeposited in copper sulfate solution containing lactic acid, accompanying potential oscillations. In-situ gravimetry by EQCM in addition to XRD and SEM measurements could succeed in revealing the multiplayer structures. The mechanism for the potential oscillations during the multilayer deposition has been proposed based on pH changes close to the electrode surface [2]. Moreover, the stress oscillations have been observed during epitaxial growth of Co monolayers on Cu (001) [3]. In this study, the correlation between potential and stress oscillations during electrodeposition was investigated by using a bending beam method combined with EQCM.