Showing papers in "Journal of Electroanalytical Chemistry in 1981"

TL;DR: In this paper, the same authors showed that polypyrrole, poly-N-methylpyrron and poly-phenyl pyrrole polymers can be electrochemically driven between the oxidized (conducting) form and the neutral (insulating) form.

TL;DR: In this paper, the first term of the Cottrell equation is expressed as a power series in the parameter sq. rt (Dt/a), where a is the electrode radius.

TL;DR: In this article, an exact solution to a related problem is deduced for the current density at all points on the surface of a polarized inlaid electrode, where the cottrellian current is augmented by a constant term proportional to the perimeter of the inlay.

TL;DR: The products of surface oxidation of pyrite and pyrhotite have been determined from analysis of linear potential sweep voltammograms as discussed by the authors, showing that pyrrhotite oxidizes to both sulphur and sulphate.

TL;DR: In this article, the capacity-potential curves at the interfaces between a (110) silver face and the aqueous electrolytes, NaF, NaClO4, KBF4 and KPF6, were studied.

TL;DR: In this paper, four platinum-based binary catalysts were investigated for the electrochemical oxidation of methanol, and their performance was investigated by linear and cyclic voltammetry.

TL;DR: In this article, a modified simulation model based on a two-dimensional implicit difference approximation (ADI) has been developed to describe diffusion processes at stationary unshielded (micro) disk electrodes.

TL;DR: In this paper, microscopically small electrodes were used to study the kinetics of homogeneous redox reactions and the heterogeneous electrochemical nucleation of metals, and the results showed that the mass transfer to exposed areas of <10−6 cm2 gives rise to very high rates of mass transfer, which allow steady-state fluxes to be determined without external control of convection.

TL;DR: In this article, it was shown that a slightly different analysis leads to algorithms that are considerably more accurate (<0.1% error) yet do not compromise the simplicity of the explicit finite-difference method or the enhanced speed of the Joslin-Pletcher approach.

TL;DR: The cyclic voltammograms of the Cu electrode were obtained in NaOH solution as a function of the voltage scanning rate, electrolyte concentration and voltage range, and a correlation was made between three well-defined anodic peaks and their corresponding cathodic ones as mentioned in this paper.

TL;DR: In this paper, a surface film thought to be a metal deficient polysulfide, which is a semi-conductor, forms on chalcopyrite during oxidation, and this film is thermally unstable and slows transport of ions, slows electron transfer to oxidants and slows the supply of holes to the solid-solution interface.

TL;DR: The electrochemical step was faster than the preceding chemical step involving a reaction between NADH and the immobilized PMS or PES and produced anodic peaks of the NADH oxidation at −50 mV and −100 mV.

TL;DR: In this paper, the enhanced Raman spectra of water molecules and chloride ions coadsorbed at an electrochemically roughened silver electrode are discussed in terms of specifically adsorbed chloride ions.

TL;DR: In this paper, the electrocatalytic activity of different alloys for methanol oxidation has been characterized by exchange current densities obtained from extrapolation of Tafel lines of calculated equilibrium potential.

TL;DR: In this article, the potential advantages of the direct methanol-air fuel cell over conventional power sources are reviewed and the problems associated with the electro-oxidation of methanoline in acid electrolyte are reviewed.

TL;DR: In this article, an analysis of the impedance of nickel deposition was carried out and the electrode kinetics was shown to be dependent on the type of anion, where the ad-ion NiadsI acts as both a reaction intermediate and a catalyst associated with a propagating kink site.

TL;DR: In this paper, the theory of linear potential voltammetry for a simple redox system is discussed on the basis of a multilayer model presented in Part I of this series when interactions between the molecules in the first layer are present and when the electron exchange between the electrode and the coating is rapid.

TL;DR: In this paper, general models applicable to the electrocrystallisation of nickel are analyzed and the relevant current-time transients for the initial stages of deposition are derived, based on which the authors derive a model for the first stages of nickel deposition.

TL;DR: In this article, a brief study of the electrochemical oxidation reaction of some α, α-disubstituted pyrroles is presented The oxidation reactions of these compounds are irreversible and produce a variety of soluble products which do not alter the electrode as is the case with N-substitized pyrrole derivatives which form conducting polymeric films on the electrode surface.

TL;DR: In this paper, the formal potentials E f for Cr(bpy) 3 3+2+/2+, Fe (bpy), Co(b py) 3+1+1/2+, Co(phen) 3 +1+2/2 +1 +1/3/2−1, and Co (phen) 2 +1−2/1/4−2+ were evaluated as a function of temperature using cyclic voltammetry in eight solvents.

TL;DR: In this article, the authors used convolution analysis to evaluate the thermodynamic and kinetic parameters of two charge transfer systems at the water/nitrobenzene interface: Cs+ ion transfer and the electron transfer between ferrocene in nitrobenzinene and hexacyanoferrate(III) in water.