A Combined Raman Spectroscopy and Atomic Force Microscopy System for In Situ and Real-Time Measures in...

Area of Science:

• Electrochemistry
• Materials Science
• Spectroscopy

Background:

• In situ and real-time analysis of electrochemical processes is crucial for understanding reaction mechanisms.
• Studying opaque electrodes presents challenges for traditional surface analysis techniques.
• Correlating surface topography with chemical composition during electrochemical reactions is often required.

Purpose of the Study:

• To describe an innovative and versatile setup for in situ and real-time measurements in an electrochemical cell.
• To enable data collection on opaque electrodes using a novel combination of techniques.
• To correlate topographic images with chemical maps during electrochemical charge exchange.

Main Methods:

• Coupling of micro-Raman spectroscopy with atomic force microscopy.
• In situ electrochemical cell measurements.
• Simultaneous acquisition of topographic and chemical data.

Main Results:

• The developed setup successfully collects data on opaque electrodes.
• It allows for the correlation of topographic images with chemical maps during oxidation/reduction processes.
• The system facilitates step-by-step study of both reversible and non-reversible electrochemical reactions.

Conclusions:

• The proposed setup is a versatile tool for in situ and real-time electrochemical analysis.
• It is particularly valuable for studying opaque electrodes and obtaining local chemical information.
• This technique enhances the understanding of complex electrochemical reaction mechanisms.