Accession Number : ADA308914

Title :   Solvation Dynamics and the Structure in Electrolytes and Electrodes.

Descriptive Note : Rept. for 1 Jun 95-31 May 96,

Corporate Author : PUERTO RICO UNIV RIO PIEDRAS DEPT OF PHYSICS

Personal Author(s) : Blum, Lesser

PDF Url : ADA308914

Report Date : MAY 1996

Pagination or Media Count : 13

Abstract : The underpotential deposition (UPD) of metals, such as copper, silver, lead, bismuth onto other metals such as gold, platinum has been the subject of much research recently. These processes provide unique opportunities to study the structure and transformations occuring at metal/electrolyte interfaces. This is so because in the UPD sharp transformations (phase transitions) occur that can be measured by an array of techniques which include unambiguous X-ray based in situ structural analysis, which was demonstrated in previous periods of this project. We have also developed simple but reliable theoretical tools for the understanding of the relations between structure and transformations in the UPD process, and in particular the role of the anions, using models of classical interactions. We have been successful in predicting in 1991 and 1994 the structure of the 2/3 coverage phase in the case of the underpotential deposition (UPD) of copper on gold (111) in the presence of sulphuric acid, recently published by Toney et al.

Descriptors :   *METALS, *DYNAMICS, *ELECTRODES, *ELECTROLYTES, *SOLVATION, METHODOLOGY, INTERFACES, PHASE TRANSFORMATIONS, STRUCTURAL ANALYSIS, ARRAYS, RELIABILITY, COPPER, PLATINUM, GOLD, ANIONS, SILVER, TRANSFORMATIONS, SULFURIC ACID, BISMUTH, SHARPNESS, LEAD(METAL).

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE