Dynamics of Nucleation at Electrochemical Interfaces via Surface EXAFS and Standing Wave Measurements
Abstract
We have been involved in the use of x-rays as in-situ probes of electrochemical interfaces in an attempt to gain some insights as to how interfacial structure affects electrochemical reactivity. X-rays provide an ideal tool for these studies because of their short wavelength and significant propagation distances even in the presence of a condensed phase. The areas that we have emphasized are: Surface EXAFS, 2. X-ray standing waves. Our work on surface EXAFS has centered on the study of the structure of underpotentially deposited metal and redox polymer films on electrodes. Underpotential deposition (UPD) refers to the deposition of metallic layers on an electrode of a different material. The X-ray standing wave (XSW) technique represents an extremely sensitive tool for determining the position of impurity atoms within a crystal or adsorbed onto crystal surfaces.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 11, 1989
- Accession Number
- ADA210733
Entities
People
- Héctor D. Abruña
Organizations
- Cornell University