Electrochemical behaviour

Thin films of fullerenes, which were deposited on an electrode surface via, for example, drop coating, were largely heterogeneous, due to the entrapping of solvent molecules into their domains. Consequently, their electrochemical behaviour displayed different degrees of reversibility and stability depending on the time of electrolysis and the... 

Vereecken P M, Vanden Kerchove F and Gomes W P 1996 Electrochemical behaviour of (100) GaAs in copper(ll) containing solutions Eiectrochim. Acta 41 95-107... 

McCalferty, E., Electrochemical Behaviour of Iron with Crevices in Nearly Neutral Chloride Solutions , J. Eleclrochem. Soc., 120, 234C (1973)... 

Haynie, F. H. and Ketcham, S. J., Electrochemical Behaviour of A1 Alloys Susceptible to Intergranular Corrosion. Electrode Kinetics of Oxide-covered Al , Corrosion, 19,403t (1963) Ketcham, S. J. and Haynie, F. H., Electrochemical Behaviour of Al Alloys Susceptible to Intergranular Corrosion. Effect of Cooling Rate on Structure and Electrochemical Behaviour in 202A Al Alloy , Corrosion, 19, 242t (1963)... 

Kolotyrkin, Y. M., Electrochemical Behaviour of Metals During Anodic and Chemical Passivation in Electrolytic Solutions , 1st Intern. Congr. Metallic Corrosion, Butterworths, London, 10 (1962)... 

Abdul Azim, A. A. and Afili, S. E., Electrochemical Behaviour of Lead and Some Selected Pb-Sb Alloys in H2SO4 -1- HCIO4 , Corros. Sci., 12, 603 (1972)... 

Do Due, H., Meyer R. M. and Tissot, P. Electrochemical Behaviour of SngHg (gamma-2) and Dental Amalgam in a Phosphate Buffer Solution , Electrochimica Acta, 25, 851-6 (1980)... 

Sarkar, N. K., Graves, R. A. and Park, J. R. (b) Electrochemical Behaviour of Ni-Cr Alloys in Chloride Solutions containing Amino Acids , Journal of Dental Research, 66, 206 (Abstr. 795) (1987)... 

Turning now to the acidic situation, a report on the electrochemical behaviour of platinum exposed to 0-1m sodium bicarbonate containing oxygen up to 3970 kPa and at temperatures of 162 and 238°C is available. Anodic and cathodic polarisation curves and Tafel slopes are presented whilst limiting current densities, exchange current densities and reversible electrode potentials are tabulated. In weak acid and neutral solutions containing chloride ions, the passivity of platinum is always associated with the presence of adsorbed oxygen or oxide layer on the surface In concentrated hydrochloric acid solutions, the possible retardation of dissolution is more likely because of an adsorbed layer of atomic chlorine ... 

In order to fully understand the electrochemical behaviour of AB, hydrides, a knowledge of their chemical properties is required. Van Vucht et al. [25] were the first to prepare LaNi5 hydride and it is arguably the most thoroughly investigated H—storage compound. It reacts rapidly with hydrogen at room temperature at a pressure of several atmospheres above the equilibrium plateau pressure. PC isotherms for this system are shown in Fig. 3. 

Claes P, Dewilde Y, Glibert J (1988) Chemical and electrochemical behaviour in molten alkali hydroxides Part II. Electrochemistry of chalcogenide ions in the molten NaOH + KOH (49 moI%) eutectic mixture. J Electroanal Chem 250 327-339... 

Van Huong CN, Parsons R, Marcus P, Montes S, Oudar J (1981) Electrochemical behaviour of silver and gold single-crystal surfaces covered with a monolayer of adsorbed sulphur. J Electroanal Chem 119 137-148... 

Traore M, Moddo R, Vittori O (1988) Electrochemical behaviour of tellurium and silver teUuride at rotating glassy carbon electrode. Hectrochim Acta 33 991-996 Ngac N, Vittori O, Quarin G (1984) Voltammetrie and chronoamperometric studies of tellurium electrodeposition of glassy carbon and gold electrodes. J Electroanal Chem 167 227-235... 

Traore M, Moddo R, Vittori O (1988) Electrochemical behaviour of tellurium and silver telluride at rotating glassy carbon electrode. Electrochim Acta 33 991-996... 

Trasath S. 1972. Workfimchon, electronegahvity, and electrochemical behaviour of metals III. 

Trasatti S. 1972. Work function, electronegativity, and electrochemical behaviour of metals. IB. Electrolytic hydrogen evolution in acid solutions. Electroanal Chem Interfacial Electrochem 39 163-184. 

Clavilier J, Feliu J, Femandez-Vega A, Aldaz A. 1989a. Electrochemical behaviour of irreversibly adsorbed bismuth on Pt(lOO) with different degrees of crystalline surface order. J Electroanal Chem 269 175-189. 

Feliu JM, Femhidez-Vega A, Aldaz A, Clavilier J. 1988. New observation of a structure sensitive electrochemical behaviour of irreversibly adsorbed As and Sb from acidic solution on Pt(lll) and Pt(lOO) orientations. J Electroanal Chem 256 149-163. 

El-Aziz AM, Kihler LA. 2002. New information about the electrochemical behaviour of Ru(OOOl) in perchloric acid solutions. Electrochem Commun 4 866. 

Zhang Y, Suryanarayanan V, et al. 2004. Electrochemical behaviour of Au nanoparticle deposited on as-grown and O-terminated diamond electrodes for oxygen reduction in alkaline solution. Electrochim Acta 2004 5235-5240. 

In an ideal case the electroactive mediator is attached in a monolayer coverage to a flat surface. The immobilized redox couple shows a significantly different electrochemical behaviour in comparison with that transported to the electrode by diffusion from the electrolyte. For instance, the reversible charge transfer reaction of an immobilized mediator is characterized by a symmetrical cyclic voltammogram ( pc - Epa = 0 jpa = —jpc= /p ) depicted in Fig. 5.31. The peak current density, p, is directly proportional to the potential sweep rate, v ... 

Ion-exchanger membranes with fixed ion-exchanger sites contain ion conductive polymers (ionomers) the properties of which have already been described on p. 128. These membranes are either homogeneous, consisting only of a polyelectrolyte that may be chemically bonded to an un-ionized polymer matrix, and heterogeneous, where the grains of polyelectrolyte are incorporated into an un-ionized polymer membrane. The electrochemical behaviour of these two groups does not differ substantially. 

While characterization of the electrode prior to use is a prerequisite for a reliable correlation between electrochemical behaviour and material properties, the understanding of electrochemical reaction mechanisms requires the analysis of the electrode surface during or after a controlled electrochemical experiment. Due to the ex situ character of photoelectron spectroscopy, this technique can only be applied to the emersed electrode, after the electrochemical experiment. The fact that ex situ measurements after emersion of the electrode are meaningful and still reflect the situation at the solid liquid interface has been discussed in Section 2.7. 

Stabilization of Ru based oxides by valve metal oxides has not been studied in such detail using photoelectron spectroscopy. The most common compositions, however, with relatively high valve metal content, are not in favor of formation of a solid solution. Studies of the phase formation in Ru/Ti mixed oxides has shown [49] that homogeneous solutions are formed for compositions with Ru < 2% or Ru > 98% (see Section 3.1.1). Therefore electrodes with other compositions are better described as physical mixtures and the electrochemical behaviour is most likely that of a linear superposition of the single components. It has to be considered, however, that the investigations performed by Triggs [49] concern thermodynamic equilibrium conditions. If, by means of the preparation procedure, thermodynamic equilibrium is... 

The passive layer is subsequently formed from Ti02+ and was described as Ti02 x H20. During corrosion CO or C02 is formed from the carbon of the carbide. The electrochemical behaviour of TiC in acid electrolytes was reinvestigated with respect to the depassivation of titanium substrates for anodic PbOzdeposition by M. Cappa-donia et al. [122] using XPS. 

Doche M-L, Hihn J-Y, Touyeras F, Lorimer JP, Mason TJ, Plattes M (2001) Electrochemical behaviour of zinc in 20 kHz sonicated NaOH electrolytes. Ultrason Sonochem 8(3) 291—298... 

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