Showing papers in "Electrochimica Acta in 1981"

TL;DR: In this article, a rotating platinum disk electrode was used to study oxygen reduction over the entire pH range and to compare the kinetics in acid and alkaline solutions, and two Tafel regions were confirmed.

TL;DR: In this paper, the physical, chemical and electrochemical characteristics of Reticulated Vitreous Carbon are discussed and a survey is given of the electrochemical applications of this relatively new electrode material, together with trends towards possible future applications.

TL;DR: In this article, a short resume of the data on chlorine reaction at RuO2 and TTiO2 electrodes is given, and the three step mechanism of the reaction with the rate determining transfer of the second electron and the formation of the nominally unipositive chlorine as an intermediate is substantiated.

TL;DR: In this article, the authors measured the impedance of a gold-powder and a Raney-gold electrode over a wide frequency range, and were found to be very similar to those of cylindrical pore of finite depth.

TL;DR: A number of synthetic MnO2 samples belonging to different crystalline modifications have been prepared and their physico-chemical properties such as chemical composition, microstructural features as revealed by X-ray diffraction data, density, surface area and magnetic susceptibility at 27°C have been studied in order to characterise the samples for subsequent investigation on their electrochemical and catalytic activities as discussed by the authors.

TL;DR: The possibility of using pulsed current in electrochemical machining at low electrolyte flow rate has been investigated in this article, where theoretical aspects of predicting electrolyte heating and limiting rate of mass transport are discussed in terms of simplified models.

TL;DR: In this paper, a platinum disc electrode under quiscent and steady state conditions, in the pH range of 2-12.3 in an universal buffer medium, was used for hydrogen peroxide analysis.

TL;DR: In this article, the catalytic decomposition of aqueous H 2 O 2 solution over MnO 2 of various crystalline modifications has been studied in the temperature and the pH ranges of 20-35°C and 3-14 respectively.

TL;DR: In this paper, a comparative testing of the International Common Samples provided by industry has been carried out to find out what properties favor rechargeability of manganese dioxide-zinc batteries.

TL;DR: In this paper, the adsorption of amine salts of oleic acid has been investigated on iron in 0.5 M H2SO4 and it has been found that amines with more than two active groups in the molecule could play the role of the cross-linking agent, causing the more tight and multilayer structure of the adsorbate.

TL;DR: In this article, the Co 3 O 4 film anodes for oxygen evolution were prepared by a thermal decomposition method and their anodic polarization characteristics were investigated in alkaline solutions.

TL;DR: The role of nonlocal dielectric response of a polar solvent in the fundamental ion-solvent and ion-ion interactions is discussed in this article, and a number of consequences of the nonlocal screening theory are reviewed both for homogeneous and interfacial systems.

TL;DR: In this paper, the effect of small additions (2 w/o-4 w /o) of HgO, Tl2O3, PbO, CdO, In2O 3, In(OH)3, In and Ga2O2 3 to pasted zinc oxide electrodes has been evaluated using chronopotentiometry, cyclic voltammetry, polarization measurements and scanning electron microscopy.

TL;DR: In this paper, the anodic intercalation of the anions HSO−4, ClO−4 and BF−4 into natural graphite (as composite electrodes with polypropylene binder) and its cathodic redissolution is presented.

TL;DR: In this article, the olefinic double bonds of cyclo-octene, α-methyl stylene and diethyl maleate were electrochemically hydrogenated on spe composite electrodes in n-hexane without the need to add supporting electrolyte.

TL;DR: In this article, the inhibition of Cu 2+, Cd 2+ and Zn 2+ discharge reactions was studied in the presence of C 4 -C 6 alcohols, phenol, benzyl alcohol and cyclohexanol (SAS).

TL;DR: In this paper, a phenomenological space charge polarization theory involving the dependences of mobility and diffusion coefficient on the concentration of charge carriers is developed for solid electrolytes with carriers of one kind mobile, which is used to describe the equilibrium, transient and frequency response of capacitors and dc and ac characteristics of electrochemical cells with solid electrolyte.

TL;DR: In this paper, the authors investigated the semiconducting properties of amorphous WO3 anodic films grown in different solutions and at different current densities, and they showed that the donor density of the grown films is strongly dependent on the films thickness and is not influenced by the nature of the anodizing solutions.

TL;DR: In this paper, a study has been made of the adsorption and corrosion inhibition of iron by triethanolamine salts of 18C unsaturated fatty acids in 05 M deaerated H2SO4 solution.

TL;DR: The theoretical basis of a method, based on potential measurements, of experimentally determining the position of a given reaction within this classification is presented in this paper, which useful to the practice of corrosion control is obtained in this way.

TL;DR: In this article, the outer sphere energy of electron transfer reactions is derived in terms of inductions produced by reactants and products, and a comparison of the various models used for calculation of the reorganization energy is performed.

TL;DR: The electrochemical reduction of sulphur into S2−8 and S−3, then into S−4 has been studied in dimethylacetamide in order to prove that neither the disproportionation of S 2−8, nor the direct electroreduction of S2 −8 could be neglected to explain the mechanism of the sulfur reduction as mentioned in this paper.

TL;DR: In this paper, the Hartree-Fock self-consistency is achieved over the diatomic molecule AB embedded in 13 other substrate atoms M 13, assuming a Helmholtz double layer at the surface electrode.

TL;DR: A tetrahemic protein, cytochrome c 3 from Desulfovibrio desulfuricans strain Norway, was studied by differential pulse polarography and linear sweep voltammetry at hanging mercury electrode.

TL;DR: In this article, the de Wolff model for γ-MnO2 is accepted and δMnOOH is an intergrowth structure of groutite with microdomains of manganite.

TL;DR: In this paper, the double layer region of the electrode potentials was investigated for the adsorption of acetic acid on platinum, gold and rhodium electrodes from aqueous electrolytes.

TL;DR: In this paper, a radiotracer technique for studying the partial dissolution rates of the components of binary alloys based on continuous simultaneous recording of the copper and zinc concentrations in the solution by means of γ-isotopes 64 Cu and 65 Zn has been described.

TL;DR: Anodic oxide films on bismuth are amphoteric semiconductors with n -type and p -type behavior and an optical band gap of 28 eV at room temperature as mentioned in this paper.

TL;DR: In this paper, a theoretical description of a new model for mass transfer at gas-evolving electrodes where bubbles coalesce frequently has been given, and the thickness of the Nernst diffusion layer and the bubble behavior were determined for an oxygenevolving transparent nickel electrode in KOH solutions under various electrolytic conditions.

TL;DR: In this paper, some equations based on the linear instability theory in non-steady state deposition under diffusion control were derived; the galvanostatic case was then analysed using the theoretical equations obtained here.