Cyclic voltammetry surface

Y.C. Liu, BJ. Hwang, W.J. Jian, and R. Santhanan, In situ cyclic voltammetry-surface-enhanced Raman spectroscopy studies on the doping-undoping of polypyrrole film. Thin Solid Films, 374, 85-91 (2000). 

Cyclic voltammetry provides a simple method for investigating the reversibility of an electrode reaction (table Bl.28.1). The reversibility of a reaction closely depends upon the rate of electron transfer being sufficiently high to maintain the surface concentrations close to those demanded by the electrode potential through the Nemst equation. Therefore, when the scan rate is increased, a reversible reaction may be transfomied to an irreversible one if the rate of electron transfer is slow. For a reversible reaction at a planar electrode, the peak current density, fp, is given by... 

Reconstruction of the Cu(l 11) close-packed surface at room temperature upon oxygen adsorption has been reported by Niehus.590 This result is in good agreement with data on cyclic voltammetry and second-harmonic generation591 it has been concluded that oxygen-containing spe-... 

The surface electrochemistry of Pt single-crystal electrodes has been exhaustively studied using cyclic voltammetry.100 186 188 197 209 412 753-756,771,-773,779-788,794-796 qq g technique has been proved to be highly... 

C.G. Vayenas, A. loannides, and S. Bebelis, Solid Electrolyte Cyclic Voltammetry for in situ Investigation of Catalyst Surfaces, J. Catal. 129, 67-87 (1991). 

The creation of two types of chemisorbed oxygen on Pt and Ag surfaces subject to NEMCA conditions is clearly shown by cyclic voltammetry (Fig. 5.27)319,50,52 or by the similar Potential-Programmed-Reduction (PPR)... 

The use of a heavy arsenal of surface science (XPS, UPS, STM, AES, TPD) and electrochemical (cyclic voltammetry, AC Impedance) techniques (Chapter 5) showed that Equations (12.2) and (12.3) simply reflect the formation of an overall neutral backspillover formed double layer at the metal/gas interface. It thus became obvious that electrochemical promotion is just catalysis in presence of a controllable double layer which affects the bonding strength, Eb, of reactants and intermediates frequently in the simple form ... 

Such effects are observed inter alia when a metal is electrochemically deposited on a foreign substrate (e.g. Pb on graphite), a process which requires an additional nucleation overpotential. Thus, in cyclic voltammetry metal is deposited during the reverse scan on an identical metallic surface at thermodynamically favourable potentials, i.e. at positive values relative to the nucleation overpotential. This generates the typical trace-crossing in the current-voltage curve. Hence, Pletcher et al. also view the trace-crossing as proof of the start of the nucleation process of the polymer film, especially as it appears only in experiments with freshly polished electrodes. But this is about as far as we can go with cyclic voltammetry alone. It must be complemented by other techniques the potential step methods and optical spectroscopy have proved suitable. 

Jerkiewicz G, Vatankhah G, Lessard J, Soriaga MP, Park YS. 2004. Surface-oxide growth at platinum electrodes in aqueous H2SO4 Reexamination of its mecharusm through combined cyclic-voltammetry, electrochemical quartz-crystal nanobalance, and Auger electron spectroscopy measurements. Electrochim Acta 49 1451-1459. 

Hamelin A. 1996. Cyclic voltammetry at gold single-crystal surfaces. Part 1. Behaviour at low-index faces. J Electroanal Chem 407 1-11. 

Figure 8.14 Cyclic voltammetry of Pt3Ni(l 11) and Pt(l 11) surfaces in 0.1M HCIO4, at 30 mV/s. (Reprinted with permission from Stamenkovic et al. [2007a], Copyright 2007. American Association for the Advancement in Science.)...

Hoffer S, BaldeUi S, Chou K Ross P, Somorjai GA. 2002. CO oxidation on electrified platinum surfaces in acetonitrile/water solutions studied by sum frequency generation and cyclic voltammetry. J Phys Chem B 106 6473-6478. 

Sun SG, Cai WB, Wan LJ, Osawa M. 1999. Infrared absorption enhancement for CO adsorbed on Au films in perchloric acid solutions and effects of surface structure studied by cyclic voltammetry, scanning tunneling microscopy, and surface-enhanced IR spectroscopy. J Phys Chem B 103 2460-2466. 

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