The structure of the electrochemical double layer: Ag(111) in alkaline electrolyte |
| |
Authors: | Christopher A. Lucas,Paul Thompson,Yvonne Grü nder,Nenad M. Markovic |
| |
Affiliation: | aDepartment of Physics, University of Liverpool, Liverpool, L69 7ZE, UK;bEuropean Synchrotron Radiation Facility, BP220, 38043 Grenoble, France;cMaterials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA |
| |
Abstract: | The structure of the electrochemical double layer at the interface between a Ag(111) electrode and 0.1 M KOH electrolyte has been probed using in-situ surface X-ray scattering (SXS). Detailed modeling of the SXS data at negative potential (E = − 1.0 V versus SCE) is consistent with the presence of an hydrated K+ cation layer at a distance of 4.1 ± 0.3 Å from the Ag surface and at positive potential (E = − 0.2 V), indicates that the presence of OHad stabilizes the hydrated K+ cations through a non-covalent interaction forming a compact double layer structure in which the Ag-K+ distance is reduced to 3.6 ± 0.2 Å. |
| |
Keywords: | X-ray scattering Silver Cations Interface structure Hydroxide Alkaline electrolyte |
本文献已被 ScienceDirect 等数据库收录! |
|