The structure of the electrochemical double layer: Ag(111) in alkaline electrolyte
The structure of the electrochemical double layer: Ag(111) in alkaline electrolyte
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DOI：
10.1016/j.elecom.2011.08.043
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发表时间：
2011-11-01
影响因子：
5.4
通讯作者：
Markovic, Nenad M.
中科院分区：
文献类型：
--
作者：
Lucas, Christopher A.;Thompson, Paul;Markovic, Nenad M.
用原位表面X射线散射（SXS）研究了Ag（111）电极和0.1M KOH电解液界面上的电化学双电层结构。负电位下SXS数据的详细建模（E = -1.0 V vs. SCE）与在距Ag表面4.1 +/-0.3埃的距离处和在正电位下存在水合K（+）阳离子层一致（E = -0.2 V），表明OH（ad）的存在通过非-共价相互作用形成紧密的双层结构，其中Ag-K（+）距离减小到3.6 +/-0.2埃。(C)2011爱思唯尔有限公司版权所有。
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 angstrom from the Ag surface and at positive potential (E = -0.2 V), indicates that the presence of OH(ad) 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 angstrom. (C) 2011 Elsevier B.V. All rights reserved.