In-situ surface x-ray scattering studies of electrochemical metal growth and dissolution

电化学金属生长和溶解的原位表面 X 射线散射研究

• 批准号: 5453665
• 负责人: Professor Dr. Olaf Magnussen
• 金额: --
• 依托单位: Institut für Experimentelle und Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5453665?language=en
• 关键词: situ; surface; ray; scattering; studies

In this project we plant to study the atomic-scale and mesoscopic structure of gold and platinum electrode surface in-situ during electrochemical deposition processes, focusing on the complex interplay between surface reconstruction and growth process. Specifically, homoepitaxial (diffusion-limited) electrodeposition on the (111) and (100) surfaces of Au and Pt and heteroepitaxial growth of Au on Pt(111) and of Ni on Au(111) electrodes will be investigated. The objective of these studies is to clarify the effect of electrodeposition on the substrate surface reconstructions and the dislocation network structures in the deposits and to study the morphological evolution during the growth process on time scales of 10-1000s. This will be done primarily by surface X-ray cell, which provides nearly unrestricted mass transprot - a key prerequisite in these experiments. In addition, supplementary electrochemical, quartz crystal microbalance, and ellipsometric measurements will be employed. The results of these studies should shed light on the effect of (potential-induced) surface stress at the solid-liquid interfaces on metal electrodeposition and surface structure.

在本项目中，我们将原位研究电化学沉积过程中金和铂电极表面的原子尺度和介观结构，重点研究表面重建与生长过程之间的复杂相互作用。具体来说，将研究Au和Pt在（111）和（100）表面的同外延（扩散限制）电沉积以及Au在Pt（111）和Ni在Au（111）电极上的异质外延生长。这些研究的目的是阐明电沉积对衬底表面重构和沉积物中位错网络结构的影响，并在10-1000s的时间尺度上研究生长过程中的形态演变。这将主要由表面x射线电池完成，它提供了几乎不受限制的质量传递——这是这些实验的关键先决条件。此外，补充电化学，石英晶体微天平和椭偏测量将被采用。这些研究结果将有助于揭示（电位诱导的）固液界面表面应力对金属电沉积和表面结构的影响。

项目成果

Initial stages of Pt(111) electrooxidation: dynamic and structural studies by surface X-ray diffraction

• DOI: 10.1016/j.electacta.2016.12.028
• 发表时间: 2017-01-10
• 期刊: ELECTROCHIMICA ACTA
• 影响因子: 6.6
• 作者: Drnec, Jakub;Ruge, Martin;Harrington, David A.
• 通讯作者: Harrington, David A.

In Situ Surface X-Ray Diffraction Studies of the Influence of the PEG-Cl-Complex on Homoepitaxial Electrodeposition on Cu(001)

• DOI: 10.1149/2.027312jes
• 发表时间: 2013
• 期刊: Journal of The Electrochemical Society
• 影响因子: 3.9
• 作者: F. Golks;Y. Gründer;A. Drünkler;J. Roy;J. Stettner;J. Zegenhagen;O. Magnussen

Cu(111) in chloride containing acidic electrolytes: Coadsorption of an oxygenated species

含氯化物的酸性电解质中的 Cu(111)：含氧物质的共吸附

• DOI: 10.1016/j.jelechem.2013.11.004
• 发表时间: 2014
• 期刊: Journal of Electroanalytical Chemistry
• 影响因子: 4.5
• 作者: Y. Gründer;A. Drünkler;F. Golks;G. Wijts;J. Stettner;J. Zegenhagen;O.M. Magnussen
• 通讯作者: O.M. Magnussen