Potentiodynamic frequency response of atomic layers in reversible and irreversible underpotential deposition

A. S. Bondarenko, G. A. Ragotsha

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The potentiodynamic electrochemical frequency response of atomic layers underpotential deposition (UPD) shows different kinds of constituents in reversible and irreversible processes in a cyclic potential scan. The total response of reversible UPD decomposes into the constituent responses of double layer and Faradaic processes represented by adsorption capacitance and resistance in equivalent electric circuit (EEC). Anions that affect metal monolayer deposition give a separate RC branch in the EEC with characteristic R and C dependencies on the potential. The EEC of irreversible UPD does not contain adsorption capacitance. The Faradaic part of the response is revealed by charge transfer resistance and the Warburg impedance, showing hysteresis in cyclic scans. Nonideal double layer capacitance in the irreversible UPD is well represented by constant phase element.

Original languageEnglish
Title of host publicationPhysics, Chemistry and Application of Nanostructures - Reviews and Short Notes to NANOMEETING 2005
Pages431-434
Number of pages4
StatePublished - 2005
Externally publishedYes
EventInternational Conference on Physics, Chemistry and Applications of Nanostructures Physics, NANOMEETING 2005 - Minsk, Belarus
Duration: 24 May 200527 May 2005

Publication series

NamePhysics, Chemistry and Application of Nanostructures - Reviews and Short Notes to NANOMEETING 2005

Conference

ConferenceInternational Conference on Physics, Chemistry and Applications of Nanostructures Physics, NANOMEETING 2005
Country/TerritoryBelarus
CityMinsk
Period24/05/0527/05/05

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