Showing papers in "Journal of Electroanalytical Chemistry in 2007"

TL;DR: In this paper, density functional theory (DFT) calculations are performed to analyze the electrochemical water-splitting process producing molecular oxygen (O 2 ) and hydrogen (H 2 ).

TL;DR: In this article, the authors show that the value of chemical diffusion coefficient of lithium-ion evaluated by graphical processing techniques is often erroneous, and non-linear curve fitting is a better approach for accurate determination of thermodynamic, kinetic and diffusion parameters of ion-insertion electrodes from PITT data.

TL;DR: In this paper, the authors describe the electrolytic deposition of Zn, Sn and Zn/Sn alloys from a solution of the metal chloride salts separately in urea and ethylene glycol/choline chloride based ionic liquids.

TL;DR: In this article, the effect of crystal orientation of the electrode toward electron transfer reactions on oxygen reduction on Pt single crystal surfaces has been studied in acidic media using a hanging meniscus rotating disk electrode configuration.

TL;DR: In this paper, the authors investigated the oxygen reduction reaction at the La 2 NiO 4+ δ /YSZ interface by impedance spectroscopy and found at least the presence of three processes involved in the reduction reaction.

TL;DR: In this paper, the particle size effects in CO monolayer oxidation are reconciled by exploring the influence of the experimental conditions on the stripping voltammograms and chronoamperograms and evidence supporting the contribution of slow nonelectrochemical step to the overall mechanism of CO oxidation is presented.

TL;DR: In this article, the modification of gold electrodes with 4-carboxyphenyl diazonium salts to form stable layers for sensing applications is reported, which typically requires short chain alkanethiols on gold electrodes.

TL;DR: In this article, a factorial experimental design was used for determining the influent parameters on the direct orange 61 (DO 61) degradation in aqueous medium by electrochemically generated hydroxyl radicals.

TL;DR: In this paper, the performance of nanostructured platinum-based catalysts was investigated for the electrooxidation of ethylene glycol in a solid-alkaline membrane fuel cell.

TL;DR: In this paper, a colloidal gold-carbon nanotubes (CNT) composite electrode using Teflon as the nonconducting binding material was constructed and a mediatorless glucose biosensor was applied for rapid determination of glucose in beverages recommended for sport practice.

TL;DR: In this paper, the electrochemical lithium insertion into a-Si:H thin-film electrodes, CVD-grown on stainless-steel substrates at 100 and 250°C, was studied using chronopotentiometry, cyclic voltammetry, and electrochemical impedance spectroscopy.

TL;DR: In this article, the influence of [SDS on the dopamine electrochemical behavior was determined in aqueous solution, and it was shown that in the absence of SDS, dopamine oxidation at a carbon paste electrode is a quasi-reversible process, mass transfer controlled that is coupled to a slow chemical reaction (EC mechanism).

TL;DR: In this article, the performance of a catalyzed H2O2 electrogeneration process using a modified oxygen-fed graphite/PTFE electrodes in which the redox catalyst was incorporated into the graphitic mass was investigated.

TL;DR: In this article, the improved electrochemical properties of prussian blue (PB) by multi-walled carbon nanotubes (MWNTs) were investigated by scanning electron microscopy and cyclic voltammetry, respectively.

TL;DR: In this article, the authors proposed a new mathematical function that accurately fit any negative feedback approach curve with only three adjustable parameters (for a given R g value, characterizing the insulator thickness of the microdisk electrode, between 1.001 and 1000).

TL;DR: Shimizu et al. as discussed by the authors examined the site-directed mutant (M467Q) of Myrothecium verrucaria bilirubin oxidase (BOD), in which Met467 as the axial ligand of the type I copper site is replaced by Gln.

TL;DR: In this article, gold nanoparticles embedded in methyltrimethoxysilane sol-gel (SG) film coated electrode was prepared (GC/SG-Aunp) and characterized.

TL;DR: In this paper, the electrochemical behavior of 33 newly synthesized 9,10-anthraquinone derivatives were studied in acetonitrile solution by cyclic voltammetry, under the same experimental conditions.

TL;DR: LiFePO4 and Li0.99Nb0.01FePO 4 with olivine structure were synthesized by an in situ synthesis technique and their electrochemical behaviors in Li2SO4 aqueous electrolytes were investigated by cyclic voltammetry as discussed by the authors.

TL;DR: In this paper, a quasi-reversible electrochemical redox process of Eu(III)/Eu(II) in the temperature range 673-823 K on glassy carbon was studied by using transient electrochemical techniques.

TL;DR: In this paper, the negatively charged alcohol dehydrogenase (ADH) was assembled onto the surface of single-walled carbon nanotubes (SWNTs), which was covered (or wrapped) by a layer of positively charged polyelectrolyte poly(dimethyldiallylammonium chloride) (PDDA), via the negative-positive charge interaction forming ADH-PDDA-SWNTS nanocomposites.

TL;DR: In this article, a novel interface embedded in situ gold nanoparticles (GNPs) in chitosan hydrogel was constructed by one-step electrochemical deposition in solution containing tetrachloroauric (III) acid and chitosa.

TL;DR: In this paper, an analytical expression for the activation overpotential in the cathode catalyst layer has been developed to investigate the performance and optimization of a PEM fuel cell, which is found that the analytical expression with the combination of proper estimates of ohmic overpotentials has accurate predictive capabilities.

TL;DR: In this article, the authors investigated the pseudocapacitive effects of Cu 2+ and Fe 2+ ions in porous carbons and showed that the capacity of an electrochemical capacitor can be significantly improved with the introduction of the ions.

TL;DR: In this article, the electrochemical oxidation of pure quinone has been investigated in acetonitrile solutions under acidic and basic conditions, and it is shown that the oxidation wave observed in typical experiments of quinones in the presence of proton donors is attributed to hydroquinone associated with the conjugated base of the proton donor.

TL;DR: In this paper, the authors synthesized several novel ionic liquids (ILs) based on imidazolium/pyrrolidinium cations and maleate/phthalate anions.

TL;DR: In this article, a PANI/MWNT composite film was synthesized via a two-step electrochemical process, where the mixture of aniline and MWNT was heated at refluxing and was electropolymerized.

TL;DR: In this paper, the surface properties of porphyrin adlayers on iron electrode were characterized by Fourier transform infrared reflection spectroscopy (FT-IR), fluorescence spectrum (FS), scanning electron microscopy (SEM), and electrochemical methods including electrochemical impedance spectrography (EIS) and polarization curves.

TL;DR: In this article, the adsorption of citric acid species from an electrolyte (pH 1) corresponding to the fully-protonated triacid species and an electrolytically equivalent mixture of H 3 A and H 2 A −

TL;DR: In this article, a simple but powerful numerical simulation for analyzing the electrochemical behavior of ion-selective membranes and liquid junctions is presented, which makes use of a finite-difference procedure in the space and time domains, which can be easily processed without the need for complex mathematical evaluations.