Friesen Research Group
Menu
Quick Links
Electrochemical in-situ Surface Stress Measurement
A novel method of monitoring real time in-situ surface stress as a powerful “spectroscopic” tool in order to investigate surface phenomena. In tandem with electrochemical procedures (controlled potential pulse, cyclic voltammetry, etc.) this technique provides insight into adsorption, reduction/oxidation reactions, and interactions between polarized surfaces and solvent/solvate systems. Current electrochemical surface stress research projects include:
- Oxygen reduction on Pt{111} and Au{111} surfaces for application to fuel cell cathode.
- Electrolyte-electrode interphase structure and water orientation at electrode surface.
- Location of potential of zero charge (pzc) of metal electrodes.
- Catalyst behavior in presence of gas species contaminants (CO, CO2, H2 & N2).
- Under-potential deposition of hydrogen and metallic species on Pt, Pd, and Au surfaces.
A newly designed electrochemical cell created to conduct in-situ surface stress measurements. The cantilevered sample can be seen fixed inside the cell.
The electrochemical cell fully assembled to conduct surface stress experiments. The setup is a sealed, three electrode cell which accommodates a stress sensor.
This is the fully assembled apparatus to make electrochemical surface stress measurements. The cell is suspended on the block to dampen any external oscillations and minimize noise in the collected data.