DSC Publications

Core Information
Title: EC-FORC: A New Cyclic-Voltammetry Based Method for Examining Phase Transitions and Predicting Equilibrium
Abstract: We propose a new, cyclic-voltammetry based experimental technique that can not only differentiate between discontinuous and continuous phase transitions in an adsorbate layer, but also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. The Electrochemical first-order reversal curve (EC-FORC) diagram for a discontinuous phase transition (nucleation and growth), such as occurs in underpotential deposition, is characterized by a negative region, while such a region does not exist for a continuous phase transition, such as occurs in the electrosorption of Br on Ag(100). Moreover, for systems with a continuous phase transition, the minima of the individual EC-FORCs trace the equilibrium curve, even at very high scan rates. Since obtaining experimental data for the EC-FORC method would require only a simple reprogramming of the potentiostat used in conventional cyclic-voltammetry experiments, we believe that this method has significant potential for easy, rapid, in-situ analysis of systems undergoing electrochemical deposition.
Keywords: Electrochemistry, Electrochemical adsorption, Phase transition, Cyclic Voltammetry, Kinetic Monte Carlo simulations
Author Information
1. Abou Hamad, Ibrahim[ Mississippi State University ]Post doc
2. Robb, Daniel T.[ Clarkson University ]Post doc
3. Novotny, M.A.[ Mississippi State University ]Neither
4. Rikvold, Per Arne[ FSU/SCS/MARTECH/NHMFL/Physics ]Neither
Detailed Scientific Article Information
Journal Name: ECS Transactions
Volume: 6 (19)
Page Range: 53-60
Article Number: Not Provided
Number of Pages: Not Provided
Year of Publication: 2008
Refereed: Yes
Digital Object Identifier (DOI), if available: 10.1149/1.2831729
Official Url: Not Provided
ISSN: Not Provided
Subjects Information
1. Chemistry
2. Physics

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