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Title: Temperature effects on the atomic structure and kinetics in single crystal electrochemistry

Abstract

The influence of temperature on the atomic structure at the electrochemical interface has been studied using in-situ surface x-ray scattering (SXS) during the formation of metal monolayers on a Au(111) electrode. For the surface reconstruction of Au(111), higher temperatures increase the mobility of surface atoms in the unreconstructed phase which then determines the surface ordering during the formation of the reconstruction. For the underpotential deposition (UPD) systems, the surface diffusion of the depositing metal adatoms is significantly reduced at low temperatures which results in the frustration of ordered structures in the case of Cu UPD, occurring on a Br-modified surface, and in the formation of a disordered Ag monolayer during Ag UPD. The results indicate that temperature changes affect the mass transport and diffusion of metal adatoms on the electrode surface. This demonstrates the importance of including temperature as a variable in studying surface structure and reactions at the electrochemical interface.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1392456
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Surface Science; Journal Volume: 631
Country of Publication:
United States
Language:
English

Citation Formats

Gründer, Yvonne, Markovic, Nenad M., Thompson, Paul, and Lucas, Christopher A. Temperature effects on the atomic structure and kinetics in single crystal electrochemistry. United States: N. p., 2015. Web. doi:10.1016/j.susc.2014.06.022.
Gründer, Yvonne, Markovic, Nenad M., Thompson, Paul, & Lucas, Christopher A. Temperature effects on the atomic structure and kinetics in single crystal electrochemistry. United States. doi:10.1016/j.susc.2014.06.022.
Gründer, Yvonne, Markovic, Nenad M., Thompson, Paul, and Lucas, Christopher A. Thu . "Temperature effects on the atomic structure and kinetics in single crystal electrochemistry". United States. doi:10.1016/j.susc.2014.06.022.
@article{osti_1392456,
title = {Temperature effects on the atomic structure and kinetics in single crystal electrochemistry},
author = {Gründer, Yvonne and Markovic, Nenad M. and Thompson, Paul and Lucas, Christopher A.},
abstractNote = {The influence of temperature on the atomic structure at the electrochemical interface has been studied using in-situ surface x-ray scattering (SXS) during the formation of metal monolayers on a Au(111) electrode. For the surface reconstruction of Au(111), higher temperatures increase the mobility of surface atoms in the unreconstructed phase which then determines the surface ordering during the formation of the reconstruction. For the underpotential deposition (UPD) systems, the surface diffusion of the depositing metal adatoms is significantly reduced at low temperatures which results in the frustration of ordered structures in the case of Cu UPD, occurring on a Br-modified surface, and in the formation of a disordered Ag monolayer during Ag UPD. The results indicate that temperature changes affect the mass transport and diffusion of metal adatoms on the electrode surface. This demonstrates the importance of including temperature as a variable in studying surface structure and reactions at the electrochemical interface.},
doi = {10.1016/j.susc.2014.06.022},
journal = {Surface Science},
number = ,
volume = 631,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}