In Situ and Ex Situ Non Linear Optical Techniques as Applied to the Study of Electrode Materials for Energy Storage Energy Generation and Electrocatalysis
Abstract
An experimental set up has been designed and built for the acquisition of ultrafast second harmonic generation (SHG) measurements to monitor surface dynamics at electrified interfaces with special emphasis on processes induced by variations in the applied potential across single crystal metal-electrolyte solution interfaces. Much of the effort has been devoted to the study of reactions of interest to fuel cells, including hydrogen and CO adsorption, as well as methanol oxidation on Pt surfaces. As evidenced by the experimental results obtained, the feasibility of measuring transient effects is limited by the geometry of the cell and particularly by the electrode size. Attempts to overcome these problems are being made by using single crystal ultramicroelectrodes taking advantage of spontaneous facetting to allow single crystalline microsurfaces to be examined optically without interference from other areas of the electrode.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 23, 2000
- Accession Number
- ADA379542
Entities
People
- Bernabe Alvarez
- Boguslaw Pozniak
- Lonel Stefan
- Yibo Mo
- Zhenghao Wang
Organizations
- Case Western Reserve University