Electrochemistry meets vacuum: strategies for advanced in situ characterization
- Dr. Rik Mom (Fritz-Haber-Institut der Max Planck Gesellschaft)
- Friday 6 September 2019
2333 CC Leiden
Electrode surfaces display a wide variety of structures, which are often dependent on the applied conditions (i.e. pH, electrode potential). Hence, for the rational design of electrochemical processes, detailed in situ characterization is necessary. In the talk, I will discuss recent strategies for performing such in situ studies using some of the most powerful methods of the vacuum surface science toolbox:
X-ray photoelectron spectroscopy, soft X-ray absorption spectroscopy and scanning electron microscopy. I will show how one can interface the vacuum required for these methods with electrochemical cells using graphene or SiNx windows. This allows access to electrode’s surface oxidation and protonation state as well as its morphology. I will demonstrate the capabilities of the techniques using three examples: the oxidation of platinum, the oxygen evolution reaction on IrOx and RuOx, and the electrodeposition of Cu.