Showing papers in "Journal of Electroanalytical Chemistry in 2004"

TL;DR: In this article, the electro-oxidation of ethanol was studied on Pt and PtSn catalysts using electrochemical, in situ reflectance spectroscopy and chromatography techniques.

TL;DR: In this paper, the authors measured the absolute viscosity of 23 room temperature ionic liquids (RTILs) (13 air/moisture-tolerant single salts and 10 air/mure-sensitive binary salts) using a rolling-ball viscometer.

TL;DR: In this paper, the effects of the thickness and morphology of a Pt film coated on a counter electrode on the performance of a dye-sensitized solar cell (DSC) were investigated.

TL;DR: In this article, a hanging meniscus rotating disk electrode configuration was used for platinum single crystal reduction in perchloric and sulfuric acid media using a single crystal and the results indicated that the anomalously low catalytic activity of the Pt(1 1 1 ) electrode was related to the formation of an ordered adlayer of specifically adsorbed (bi)sulfate anions.

TL;DR: An illustrated review of reticulated vitreous carbon (RVC) as an electrode material is presented in this paper, where the physical structure of RVC (in terms of pores per linear inch, strut length, strut thickness and area of the trigonal strut) is examined for 10, 30, 60 and 100 ppi grades using scanning electron microscopy.

TL;DR: In this article, the electrochemical behavior of 1-(2-ethylamino)-2-methylimidazoline and its derivatives was evaluated by using potentiodynamic polarization curves and electrochemical impedance spectroscopy, EIS, techniques in deaerated acid media to compare their corrosion inhibition efficiency.

TL;DR: In this article, conductive sulfur-containing cathode materials for high capacity lithium secondary batteries have been synthesized by heating a mixture of polyacrylonitrile and elemental sulfur.

TL;DR: In this paper, the authors measured the yields of different products at 0.6 V using smooth polycrystalline and Pt(1.1) electrodes and found that strong adsorption of sulfate hinders methanol oxidation by inhibiting the dissociative steps where the adsorbed CO intermediate is formed.

TL;DR: In this article, formic acid was used as an anode fuel for polymer electrolyte fuel cells and the electro-oxidation process was investigated on Pt/C. The effect of the electrode potential on the impedance pattern was revealed and an impedance model incorporating reaction kinetics information was developed to simulate the experimental impedance response.

TL;DR: In this article, the influence of acidity and nitrate concentration on the reaction rate and selectivity of electrocatalytic nitrate reduction on platinum was investigated and it was shown that at high concentrations the amount of free surface sites is needed either for the adsorption of a second species necessary for the reaction (water or hydrogen) or for the dissociation of nitrate to nitrite.

TL;DR: In this paper, the properties of several types of counter electrodes based on metal, plastic, and glass substrates for use in dye-sensitized solar cells (DSCs) were investigated.

TL;DR: In this article, a 0.1 M NaOH solution at Au(1/3 monolayer (ML) single crystal electrodes modified with various ad-metals (Cu, Ag, Ru, Pt, Pd and Cd) by underpotential deposition (upd) was investigated.

TL;DR: In this paper, a single-walled carbon nanotube (SWNT) composite was characterized by transmission electron micrograph (TEM), X-ray diffraction (XRD), and energy dispersive X-Ray spectroscopy (EDS).

TL;DR: In this paper, the cyclic voltammetric response of an electrode composed of two different electrode materials is modelled using finite difference simulations, and the diffusion domain approach is applied to the basal plane highly ordered pyrolytic graphite surface in an attempt to explain the characteristic shapes of basal plane HOPG voltammograms.

TL;DR: In this paper, it was found that Pt-Fe/C alloy crystallizing in an ordered face centered tetragonal crystal structure with higher proportions of active-platinum sites and a completely different nearest neighbour environment than Pt/C exhibits significantly high oxygen-reduction activity in the presence of methanol.

TL;DR: In this paper, the authors used cyclic voltammetry and chronoamperometry to study the CO oxidation of adsorbed CO on Pt(1/Ru) and Pt( 1/1/1)/Ru electrodes in 0.1 M H 2 SO 4 and 0. 1 M NaOH with a single and a split peak, respectively.

TL;DR: In this article, a combination of electrochemical surface plasmon spectroscopy (ESPR) and the electrochemical quartz crystal microbalance (EQCM) was used to investigate the electropolymerization and doping/dedoping properties of polyaniline ultrathin films on Au electrode surfaces.

TL;DR: In this article, a Cu-mesh electrode is modified beforehand by copper(I) halides, and CO2 is reduced at a constant potential with these modified electrodes in an acidic solution of potassium halide.

TL;DR: In this paper, a water-in-oil microemulsion was used to synthesize gold nanoparticles, which were then cleaned by depositing a PbO 2 film in 0.1 M NaOH + 1 mM Pb(II).

TL;DR: In this paper, surface-enhanced infrared absorption spectroscopy (SEIRAS) combined with cyclic voltammetry has been employed to investigate the electrooxidation of formaldehyde, methyl formate, and dimethoxymethane (byproducts in methanol oxidation) on platinum in an acidic solution.

TL;DR: In this article, the authors describe the extraction of values for various parameters in the point defect model (PDM) for the growth of passive films on Alloy-22, from electrochemical impedance data for this alloy measured in saturated NaCl brine.

TL;DR: In this article, the flatband potential, V FB and the acceptor density, N A are determined as 0.47 V versus Ag|AgCl (at pH 7.0) and 1.8 × 10 21 cm −3, respectively.

TL;DR: In this paper, the electrochemical synthesis and the charging-discharging reactions of poly(3,4-ethylenedioxythiophene) (PEDOT) in two room-temperature ionic liquids, 1-butyl-3-methyl-imidazolium tetrafluoroborate (BMIMBF 4 ) and 1 -butyl 3-methyl 3-dimethyl methyl hexafluorophosphate(BMIMPF 6 ) were studied with cyclic voltammetry, in situ attenuated total reflection Fourier transform infrared (

TL;DR: The reduction of Fe2(μ-SC6H4S)(CO)6 (1) at glassy carbon electrode appears chemically reversible (E1/2=−1.68 V vs. Fc in Bu4NPF6-CH2Cl2, ks,h∼5×10−3 cm s−1) and actually consists of two overlapping one-electron transfers with the second transfer slightly more favorable than the first.

TL;DR: In this article, two types of spherical agglomerates are evaluated, which represent limiting structures that can be obtained by distinct synthetic procedures, and the significance of these results for the optimization catalyst layers in the light of operation conditions and synthesis methods is discussed.

TL;DR: In this paper, a self-assembled gas bubble template mechanism was proposed to generate polypyrrole microstructures with morphology like bowls, cups and bottles, which can be easily controlled by changing the electrochemical polymerization conditions and have good reproducibility.

TL;DR: In this paper, a rotating ring-disk electrode (RRDE) was used for the electrochemical reduction of oxygen on phenanthrenequinone-modified glassy carbon electrodes (GC).

TL;DR: In this paper, surface treatment with zinc leads to a net improvement of the electrochemical performance of the 5-V electrode in lithium cells, and X-ray diffraction reveals the occurrence of surface ZnO, which disappears after heating at 500 °C.

TL;DR: In this paper, a polymer film of N,N-dimethylaniline (PDMA) having a positive charge on the quarternary ammonium group in its backbone was electrochemically deposited on a glassy carbon (GC) electrode surface.

TL;DR: In this article, several methods of preparation of porous gold electrodes characterized by the surface roughness from 20 to 2.5 × 10 3 were described, which involved thermal decomposition, leaching or dissolution of surface amalgam.