Pore Confined Liquid-Vacuum Interface for Charge Transfer Study in an Electrochemical Process.

A pore confined liquid-vacuum interface was created in liquid secondary ion mass spectrometry analysis in order to study the charge transfer in electrochemical reactions. The interfacial processes such as the critical diameter, influence of aperture properties on the morphology of the liquid-vacuum interface, pressure field, concentration field, and electric field were revealed by finite element simulation. The correlation between numerical study of the chemical changes at the electrode-electrolyte interface and experimental results during the dynamic potential scan was built successfully. Better understanding of these interfacial processes could promote further applications of liquid secondary ion mass spectrometry in energy storage and electrochemical catalysis.