Showing papers in "Journal of Electroanalytical Chemistry in 1988"

TL;DR: In this paper, a review of recent electrochemical literature concerning the oxidation of small organic molecules as potential fuels for fuel cells is presented, and the nature of poisoning species and reaction intermediates are discussed.

TL;DR: In this paper, the results of three methods used to attain high power densities in solid polymer electrolyte fuel cell systems were presented, i.e., use of a higher wt% Pt/C in the supported electrocatalysts, sputtering of a thin film of platinum (corresponding to a 50 nm film on a smooth surface) on the Prototech electrode, and a combination of the two methods.

TL;DR: In this paper, the cyclic potential sweep (CPS) method was applied to aniline electropolymerization in several strong acids (H 2 SO 4, HNO 3, HCl, HBF 4, HClO 4 and CF 3 COOH).

TL;DR: In this paper, the Schwarz-Christoffel transformation was used to solve the diffusion equation at interdigitated array electrodes (IDA) for reversible redox reactions of soluble species under steady-state conditions.

TL;DR: In this article, it was shown that the intensity of the middle peak increases upon copolymerisation of the aniline with phenazine or m-phenylenediamine; this new polymer can be prepared in pure form by the oxidation of hydrazobenzene in NH4F·2.3 HF.

TL;DR: In this paper, the oxidation of formic acid at single crystal Pt (111) and Pt (100) electrodes in aqueous sulphuric acid was investigated using in-situ IR spectroscopy.

TL;DR: In this article, the electrochemical behavior of a bismuth surface compound formed spontaneously without applying external potential when platinum is put in contact with a solution of a Bi(III) salt was studied.

TL;DR: In this paper, the sensitivity of the SWV to quasi-reversible redox reactions from the adsorbed state is demonstrated and the relationship between the properties of SW response and the parameters of a charge transfer and of the excitation signal is discussed.

TL;DR: In this paper, the behavior of inlaid disc and recessed disc microelectrodes of identical radii under chronoamperometric conditions is compared both theoretically and experimentally.

TL;DR: In this article, metal particles were dispersed in electrically conducting polymer films in order to achieve multi-electron transfer processes in a three-dimensional matrix, and the electrocatalytic reduction of oxygen was investigated by rotating disk electrode studies with these films.

TL;DR: In this paper, a novel Pt + Ru electrode material is shown to be highly active for the direct electro-oxidation of methanol in H2SO4 solutions and to show very little tendency to poison.

TL;DR: In this article, a single potential alteration infrared (SPAIR) technique was used to obtain a sequence of single-beam infrared spectra using an FTIR spectrometer during potential sweep or following potential-step perturbations, and referencing these to a spectrum obtained at the initial potential or after complete oxidation had occurred.

TL;DR: In this article, the electrochemical reduction of CO 2 has been studied on Cu foil electrodes in 0.5 M KHCO 3, pH 7.6, and it was demonstrated that CH 4 is formed from CO at a 50 times lower rate than from CO 2 with an onset potential of −1.5 to − 1.6 V vs. SCE.

TL;DR: In this article, an analytical formulation for the increase or decrease of the current in steady-state or quasi-steady-state voltammograms is established for the case where the concentration of the inert electrolyte is low, and thus migration can play a role in the flux of electroactive species.

TL;DR: In this paper, the shapes of steady-state voltammograms at inlaid disc and at shrouded hemispherical microelectrodes are presented. But the shape of voltamograms is not identical if the electron transfer occurs irreversibly.

TL;DR: In this article, an electrochemical quartz crystal microbalance has been used to study the anodic electropolymerization of pyrrole and concurrent deposition of polypyrrole onto gold in acetonitrile and propylene carbonate using tetraethylammonium tosylate, tetrabutylammoniam tetrafluoroborate, and lithium perchlorate.

TL;DR: In this article, in-situ IR spectroscopy of adsorbed hydrogen on polycrystalline Pt, Rh, Ir and single crystal Pt(111) electrodes in acid solution allowed the identification of a new type of this adsorbate.

TL;DR: In this paper, the underpotential deposition (UPD) of Pb, Bi, Cu, and Cd has been examined on polycrystalline Au in 01 M HClO4 using an oscillating quartz crystal microbalance (QCM) mounted in an electrochemical cell.

TL;DR: In this article, the photoelectrochemical properties of single crystals of Niobium doped iron (III) oxides prepared by chemical vapor transport were investigated and evidence for the existence of a sub-bandgap energy level in Fe2O3 was also presented.

TL;DR: In this paper, the cyclic voltammetry of Pt (111) in three different structural states (well-ordered, restructured by electrochemical redox cycling, and restructuring by Ar+-sputtering) was studied in aqueous acidic and basic electrolytes using a UHV-electrochemical transfer system.

TL;DR: In this paper, the electrochemical behavior of the HPA immobilized in several film thicknesses is described, and the levels of doping of the polymers by HPA are similar to those with classical anions, but here the H PA are retained in the films rather better even upon cycling.

TL;DR: An analytical solution of the time-dependent diffusion current to square, hexagonal and random arrays of microelectrodes has been obtained by consideration of the overlap of circular diffusion zones extending from each micro-electrode in the array.

TL;DR: In this article, the exact shape of steady-state voltammetric waves under reversible, irreversible and quasi-reversible conditions is predicted for an inlaid disc electrode subject to control by diffusion, thermodynamics, kinetics or any combination of these three constraints.

TL;DR: In this paper, general theoretical relationships are derived that apply to steady-state voltammetry at hemispherical microelectrodes for any electrode reaction and any solution composition, and these relationships are then applied to two typical systems: the oxidation of ferrocene and the reduction of a quinone.

TL;DR: In this article, the adsorption of hydrogen and sulphuric acid anions has been studied on single-crystal platinum stepped surfaces from the [110] zone, and the voltammetric profiles are in a wide potential range determined by bisulphate and sulphate adaption/desorption.

TL;DR: In this paper, the mutual dependence of the faradaic and double-layer charging currents is taken into account for the reduction of anthracene in dimethylformamide, a test example of very fast electron transfer kinetics (kSap = 3.5 cm s−1).