Towards an understanding of friction at electrodes on the atomic scale

在原子尺度上理解电极摩擦

• 批准号: 288879147
• 负责人: Professor Dr. Helmut Baltruschat
• 金额: --
• 依托单位: Abteilung Elektrochemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/288879147?language=en
• 关键词: Towards; understanding; friction; electrodes; atomic

Despite of the fact that in everyday life friction often occurs at wet surfaces, and therefore in the presence of an interfacial potential drop, the number of reports on fundamental studies of friction on the atomic scale is limited. For fundamental studies, friction measurements on electrode surfaces (which can be prepared similarly clean and well defined as in UHV) also offer the advantage that the surface can quickly and reversibly be modified with adsorbed monolayers or multilayers. In this project, further insight into the mechanism of friction shall be gained by examining the effect of different kinds of adsorbates (cations and anions, organic adsorbates, tensides) and also their orientation on friction as studied by atomically resolved friction force microscopy on the one hand. On the other hand, theoretical models of friction shall be developed; their results shall be compared to the measurements. Theory shall also help in designing appropriate experiments.

尽管在日常生活中摩擦经常发生在潮湿的表面，因此在界面电位下降的存在下，在原子尺度上的摩擦的基础研究的报告数量是有限的。对于基础研究，在电极表面上的摩擦测量（其可以像在UHV中一样清洁和良好地定义）也提供了表面可以快速且可逆地被吸附的单层或多层改性的优点。在本项目中，一方面通过原子分辨摩擦力显微镜研究不同种类的吸附物（阳离子和阴离子、有机吸附物、表面活性剂）及其取向对摩擦的影响，进一步深入了解摩擦机制。另一方面，应建立摩擦力的理论模型;应将其结果与测量结果进行比较。理论还应有助于设计适当的实验。