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

被引：12

作者：

Karl, Robert M. ^{[1
]}

Barbour, Andi ^{[2
]}

Komanicky, Vladimir ^{[3
]}

Zhu, Chenhui ^{[2
]}

Sandy, Alec ^{[4
]}

Pierce, Michael S. ^{[1
]}

You, Hoydoo ^{[2
]}

机构：

[1] Rochester Inst Technol, Sch Phys & Astron, Rochester, NY 14623 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[3] Safarik Univ, Fac Sci, Kosice 04001, Slovakia

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 26期

关键词：

X-RAY-SCATTERING; SCANNING-TUNNELING-MICROSCOPY; PHOTON-CORRELATION SPECTROSCOPY; SINGLE-CRYSTAL ELECTRODES; UNDERPOTENTIAL DEPOSITION; CYCLIC VOLTAMMETRY; AG(100) ELECTRODE; SURFACE-STRUCTURE; WATER-MOLECULES; DOUBLE-LAYER;

D O I：

10.1039/c5cp02138c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 10(2)-10(4) 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.

引用

页码：16682 / 16687

页数：6

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