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Potentiodynamic Electrochemical Impedance Spectroscopy for Underpotential Deposition Processes
Author(s) -
Ragoisha G. A.
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400648
Subject(s) - underpotential deposition , dielectric spectroscopy , capacitance , electrochemistry , double layer capacitance , cyclic voltammetry , analytical chemistry (journal) , adsorption , chemistry , materials science , inorganic chemistry , electrode , chromatography
Potentiodynamic electrochemical impedance spectroscopy makes available, from cyclic potential scan combined with frequency response acquisition, a set of potentiodynamic profiles of characteristic electrochemical variables in addition to a voltammetric profile. Especially informative in the underpotential deposition is the double layer capacitance profile which characterises alterations of the interface status during the potential scan. Potentiodynamic profiles of charge transfer resistance and Warburg coefficient present complementary information about faradaic part of the electrochemical response. Profiles of adsorption capacitance are available in the reversible UPD.