X-ray Tomography Applied to Electrochemical Devices and Electrocatalysis

Area of Science:

• Materials Science
• Electrochemistry
• Imaging Techniques

Background:

• X-ray computed tomography (CT) is a key non-destructive 3D imaging method.
• It is vital for characterizing porous and nonporous materials.
• In electrocatalysis, CT quantifies electrode morphology, including porosity and pore-size distribution.

Purpose of the Study:

• To highlight the application of X-ray CT in electrocatalysis research.
• To demonstrate its utility in studying electrode properties and evolution.
• To show how CT contributes to developing efficient electrochemical devices.

Main Methods:

• Utilizing X-ray computed tomography (CT) for 3D imaging.
• Quantifying morphological properties of electrodes.
• Analyzing in situ, ex situ, and operando environments.

Main Results:

• CT enables detailed analysis of porosity, tortuosity, and pore-size distribution.
• It allows tracking catalyst degradation and interface evolution.
• Formation of new phases (e.g., water, oxygen) and transport dynamics can be studied.

Conclusions:

• X-ray CT is crucial for understanding electrode behavior in electrochemical systems.
• This imaging technique facilitates the design of improved fuel cells, electrolyzers, and batteries.
• Advancements in device design through CT analysis support decarbonization efforts.