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。这里提出的拉曼原子力显微镜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定位信息。我们希望利用拉曼原子力显微镜来基本了解电催化过程。一般来说，电化学反应发生在电解质和电极表面之间的界面上。使用拉曼原子力显微镜能够检测吸附的表面物质或电极表面的化学和形态变化，例如金属氧化物的阴极还原，作为所施加电势的函数。另一方面，导电 AFM 测量可用于将电极表面的形貌信息与离聚物的空间分布相关联，这强烈影响燃料电池和电解的催化性能。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，这种表面敏感技术的独特和先进的组合提供了迄今为止对材料和催化特性的更深入的了解。由于其高度复杂性和大量的技术工作，拉曼原子力显微镜在当今的电催化领域很少使用。 需要进一步开发和使用这种先进组合的方法，以详细探索电解质/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。