atomic force microscop coupled with Raman spectrometer (Raman-AFM)

原子力显微镜与拉曼光谱仪 (Raman-AFM) 联用

• 批准号: 460605434
• 金额: --
• 依托单位: Technische Universität Braunschweig
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/460605434?language=en
• 关键词: atomic; force; microscop; coupled; Raman

Raman-AFM is a state-of-the-art research instrument which combines both surface-sensitive techniques, namely atomic force microscopy (AFM) and Raman spectroscopy in a unique manner. The here proposed Raman-AFM allows investigating co-localized information of surface chemistry and surface structure of electrode materials and composites on the nano scale. We want to employ the Raman-AFM for fundamental understanding of electrocatalytic processes. Generally, electrochemical reactions occur at the interface between electrolyte and electrode surface. The use of Raman-AFM enables to detect adsorbed surface species or chemical and morphological changes of the electrode surface, e.g. cathodic reduction of metal oxides, as a function of the potential applied. On the other hand, conductive AFM measurements can be applied to correlate the topographic information of the electrode surface with the spatial distribution of ionomers, which strongly influences the catalytic performance in a fuel cell and electrolysis. Our aim is to link the spatial surface properties of the electrode materials or composites with the operating conditions of a fuel cell or electrolysis. Definitely, this unique and advanced combination of both surface-sensitive techniques provides deeper insights into the material and catalytic properties so far. Raman-AFM is rarely used in the today´s electrocatalysis community due to its high complexity and large technical efforts. Further development and methods for the use of this advanced combination is required to explore the surface chemistry and surface structure at the electrolyte/electrode interface in detail. Our inquires show several companies and their approaches to combine both techniques for spatial and chemical investigations in field of electrocatalysis.

拉曼-原子力显微镜是一种最先进的研究仪器，它以独特的方式结合了表面敏感技术，即原子力显微镜（AFM）和拉曼光谱。本文提出的拉曼afm允许在纳米尺度上研究电极材料和复合材料的表面化学和表面结构的共域信息。我们希望利用拉曼原子力显微镜对电催化过程进行基本的理解。电化学反应一般发生在电解液与电极表面的交界面上。拉曼原子力显微镜的使用可以检测电极表面的吸附物质或化学和形态变化，例如金属氧化物的阴极还原，作为施加电位的函数。另一方面，导电AFM测量可以应用于将电极表面的地形信息与离子的空间分布联系起来，这对燃料电池和电解中的催化性能有很大影响。我们的目标是将电极材料或复合材料的空间表面特性与燃料电池或电解的操作条件联系起来。毫无疑问，这两种表面敏感技术的独特和先进的结合为迄今为止的材料和催化性能提供了更深入的了解。由于拉曼- afm的高复杂性和巨大的技术投入，它在当今的电催化领域很少被使用。需要进一步开发和使用这种先进组合的方法来详细探索电解质/电极界面的表面化学和表面结构。我们的调查显示了几家公司及其在电催化领域结合空间和化学研究技术的方法。