Potentiodynamic electrochemical impedance spectroscopy

被引:85
作者
Ragoisha, GA [1 ]
Bondarenko, AS [1 ]
机构
[1] Belarusian State Univ, Phytochem Res Inst, Minsk 220050, BELARUS
关键词
electrochemical impedance; PDEIS; underpotential deposition; bismuth; electropolymerisation; polyaniline;
D O I
10.1016/j.electacta.2004.10.055
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Potentiodynamic electrochemical impedance spectroscopy (PDEIS) uses virtual instruments to acquire, by means of a common potentiostat, multidimensional dependencies that characterise variations of dc current and frequency response in the same potential scan. Unlike classical EIS, which finds the whole equivalent circuit in stationary states, PDEIS finds, in potentiodynamic systems, only those elements of equivalent circuits that are needed to decompose the ac response in a limited range of frequencies. The decomposition of ac response into components belonging to different elements is provided by a built-in spectrum analyser, which gives dependences of equivalent circuit parameters on variable potential. The new technique develops the idea, originally suggested by D.E. Smith, of versatile characterisation of the electrochemical response in a simple computerised experiment. PDEIS solves this problem with the use of multi-frequency potentiodynamic probing based on analysis of streams of wavelets. The use of the additional variable (electrode potential) helps to disambiguate the equivalent circuit analysis. The PDEIS performance is illustrated on systems of different kind: a reversible system (ferricyanide redox transformations on glassy carbon and platinum electrodes), a system that is locally reversible but shows different responses in forward and backward scans (Bi upd on Au) and strongly irreversible variable system (initial stages of aniline electropolymerisation on gold). (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1553 / 1563
页数:11
相关论文
共 31 条
[11]  
Lasia A, 1999, MOD ASP ELECTROCHEM, P143, DOI 10.1007/0-306-47604-5_1
[12]   Evaluation of the effect of two-dimensional geometry of Pt single-crystal faces on the kinetics of upd of H using impedance spectroscopy [J].
Morin, S ;
Dumont, H ;
Conway, BE .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 412 (1-2) :39-52
[13]   A NEW IMPEDANCE SPECTROMETER FOR THE INVESTIGATION OF ELECTROCHEMICAL SYSTEMS [J].
POPKIROV, GS ;
SCHINDLER, RN .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1992, 63 (11) :5366-5372
[14]   Fast time-resolved electrochemical impedance spectroscopy for investigations under nonstationary conditions [J].
Popkirov, GS .
ELECTROCHIMICA ACTA, 1996, 41 (7-8) :1023-1027
[15]  
Ragoisha G. A., 2003, CHEM PROBLEMS DEV NE, V1, P138
[16]   Potentiodynamic electrochemical impedance spectroscopy. Copper underpotential deposition on gold [J].
Ragoisha, GA ;
Bondarenko, AS .
ELECTROCHEMISTRY COMMUNICATIONS, 2003, 5 (05) :392-395
[17]   Potentiodynamic electrochemical impedance spectroscopy of silver on platinum in underpotential and overpotential deposition [J].
Ragoisha, GA ;
Bondarenko, AS .
SURFACE SCIENCE, 2004, 566 :315-320
[18]   Potentiodynamic electrochemical impedance spectroscopy: lead underpotential deposition on tellurium [J].
Ragoisha, GA ;
Bondarenko, AS ;
Osipovich, NP ;
Streltsov, EA .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2004, 565 (02) :227-234
[19]   Potentiodynamic electrochemical impedance spectroscopy for solid state chemistry [J].
Ragoisha, GA ;
Bondarenko, AS .
SOLID STATE CHEMISTRY V, 2003, 90-91 :103-108
[20]   A unified approach to trace analysis and evaluation of electrode kinetics with fast Fourier transform electrochemical instrumentation [J].
Schiewe, J ;
Hazi, J ;
Vicente-Beckett, VA ;
Bond, AM .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 451 (1-2) :129-138