Issue 26, 2015

Charge-induced equilibrium dynamics and structure at the Ag(001)–electrolyte interface

Abstract

The applied potential dependent rate of atomic step motion of the Ag(001) surface in weak NaF electrolyte has been measured using a new extension of the technique of X-ray Photon Correlation Spectroscopy (XPCS). For applied potentials between hydrogen evolution and oxidation, the surface configuration completely changes on timescales of 102–104 seconds depending upon the applied potential. These dynamics, directly measured over large areas of the sample surface simultaneously, are related to the surface energy relative to over or under potential. Concurrent specular X-ray scattering measurements reveal how the ordering of the water layers at the interface correlates with the dynamics.

Graphical abstract: Charge-induced equilibrium dynamics and structure at the Ag(001)–electrolyte interface

Article information

Article type
Communication
Submitted
13 Apr 2015
Accepted
04 Jun 2015
First published
08 Jun 2015

Phys. Chem. Chem. Phys., 2015,17, 16682-16687

Author version available

Charge-induced equilibrium dynamics and structure at the Ag(001)–electrolyte interface

R. M. Karl Jr., A. Barbour, V. Komanicky, C. Zhu, A. Sandy, M. S. Pierce and H. You, Phys. Chem. Chem. Phys., 2015, 17, 16682 DOI: 10.1039/C5CP02138C

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