Showing papers in "Electrochemistry Communications in 2002"

TL;DR: Carbon-nanotube (CNT)-modified glassy carbon electrodes exhibiting strong and stable electrocatalytic response toward NADH are described in this article, where a substantial (490 mV) decrease in the overvoltage of the NADH oxidation reaction (compared to ordinary carbon electrodes) is observed using single-wall and multi-wall carbon nanotube coatings, with oxidation starting at ca. − 0.05 V (vs. Ag/AgCl; pH 7.4).

TL;DR: Amorphous hydrous manganese oxide (a-MnO2·nH2O) was anodically deposited onto a graphite substrate from a MnSO4·5H 2O solution with pH of 6.4.

TL;DR: LiFePO4 is a potential cathode candidate for the next generation of secondary lithium batteries and its reactivity and thermodynamic stability have been determined in this paper, where the fully charged state, orthorhombic FePO4, is metastable relative to the trigonal all tetrahedral form, but the massive structural rearrangement necessary makes the structural change kinetically unfavorable at room temperature.

TL;DR: In this article, surface-enhanced infrared absorption (SEIRA) effect was used in preparation of Au island film electrodes for in situ infrared spectroscopic studies of the electrochemical interface in attenuated total reflection mode.

TL;DR: In this paper, a sulfur-carbon nano-composite with elemental sulfur incorporated in porous carbon was prepared by thermal treatment of a mixture of sulfur and active carbon, which exhibited a reversible capacity of 440 mAh g−1 at a current density of 0.3 mA cm−2.

TL;DR: LiNi0.8Co0.2O2 particles from high-power lithium-ion cells were examined to determine material changes that result from accelerated aging tests as discussed by the authors, which indicated a LixNi1−xO-type layer on the particle surfaces.

TL;DR: In this article, a gold nanoparticles-electrodeposited gold electrode in 0.5 M H2SO4 solution was investigated, and two well-defined reduction peaks were observed at +50 and −250 mV.

TL;DR: In this article, the performance and structural stability of ZnO-coated LiNi0.5Mn1.5O4 electrodes in the 5 V region at elevated temperature has been studied as a function of the level of zinc oxide coating.

TL;DR: In this article, the Pt-M alloy catalysts were investigated for oxygen reduction in sulfuric acid and as cathodes in single proton exchange membrane fuel cells (PEMFC).

TL;DR: LiBF4-based electrolyte has lower ionic conductivity than the LiPF6 analogue, and it provides improved low temperature performance as discussed by the authors, in particular, at −30 °C, a Li-ion cell with 1 m (mol/kg solvent) LiBF4 dissolved in 1:1:3 (wt.) propylene carbonate/ethylene carbonate (EC)/ethylmethyl carbonate(EMC) mixed solvent, in comparison to that obtained at 20 °C.

TL;DR: In this paper, Li uptake and extraction in the metal phosphide, CoP3, provides a reversible capacity of 400 mAh/g at an average potential of 0.9 V vs Li/Li+, via a novel mechanism.

TL;DR: In this article, the multi-walled carbon nanotubes (MWNTs) modified electrode exhibits high stability and strong catalytic effect toward the electrochemical oxidation of nitric oxide (NO).

TL;DR: In this paper, a series of Pt-based nanoparticle catalysts with high activity for formic acid electrooxidation is presented. But the Pt/Pd catalyst requires the highest potential to remove the CO, yet it is the most active.

TL;DR: The double layer capacitance of highly pure single-walled carbon nanotubes (SWCNTs) prepared by the HiPco(TM) process was measured in 1.0 mol dm(-3) LiClO4/propylene carbonate solution.

TL;DR: In this article, the electrochemical properties of 0.95LiMn0.5Ni0.05Li2TiO3 have been investigated as part of a study of xLiMO2·(1−x)Li2M′O3 electrode systems for lithium batteries in which M=Co, Ni, Mn and M′=Ti, Zr, Mn.

TL;DR: In this paper, the effect of ionic strength to the behavior of MB with dsDNA and ssDNA was also studied by means of voltammetry, which demonstrated that MB could be used as an effective electroactive hybridization indicator for DNA biosensors.

TL;DR: LiNi 0.5 Mn 1.5 O 4 has been synthesized using two different synthetic methods; a sol-gel method and a composite carbonate process as mentioned in this paper, which exhibited a pure cubic spinel structure (Fd 3 m ) without any impurities and only one voltage plateau at 4.7 V in the charge/discharge curves.

TL;DR: In this article, the detection of DNA hybridization in connection to cadmium sulfide nanoparticle tracers and electrochemical stripping measurements of the Cadmium ion was reported.

TL;DR: In this article, a multi-walled carbon nanotube (MWCNT) was successfully immobilized on the surface of platinum electrode by mixing with DNA, which gave reversible redox peaks with a formal potential of 81 mV vs SCE.

TL;DR: In this paper, the morphological structure of polypyrrole film formed on the anode was greatly affected, and the polymerization rate, electrochemical capacity and electroconductivity were significantly increased.

TL;DR: In this paper, carbon paste electrodes (CPEs) plated with a bismuth film are presented, which can be generated onto the carbon paste surface either from an external plating solution or in situ.

TL;DR: In this paper, the perovskite structure and Ca-ion play a beneficial role in the performance of CaSnO3 with high temperature solid state reaction and electrochemical properties.

TL;DR: In this article, the effects of annealing in air and anodizing on the capacitive behavior of carbon-ruthenium composites fabricated by wet impregnation were investigated in 0.1 M H2SO4 by cyclic voltammetry and chronopotentiometry.

TL;DR: In this paper, the transfer of the ions Cl −, Br −, I −, ClO 4 −, SCN −, NO 3 −, BF 4 −, and (C 6 H 5 ) 4 B − across the water| n -octanol (W|OC) liquid interface was studied and the standard Gibbs energies of ion transfer were determined.

TL;DR: In this article, a method for producing insulated nanometer-sized carbon electrodes is presented, where electrodes are produced using electrochemical etching of carbon fibers followed by deposition of electrophoretic paint.

TL;DR: In this article, the adsorptive immobilization and electrochemistry of horse and yeast cytochrome c on indium/tin oxide (ITO) electrodes was reported.

TL;DR: The structural changes of LiNiO2 cathode material during charge-discharge using synchrotron based in situ X-ray diffraction spectroscopy was studied in this paper.

TL;DR: In this paper, the performance of layered composite electrodes with LiMn{sub 0.46}Ni{sub0.05}LiMnO{sub 2} was investigated at low voltages and the results indicated that the low-voltage (<1.8 V) reaction is associated primarily with the reduction of Mn{sup 4+} to Mn {sup 2+}.

TL;DR: In this article, the ability of a polyoxometallate (dodecamolybdophosphate) to form negatively charged monolayers on solid electrode surfaces is explored.

TL;DR: In this article, a new method for measuring local interfacial impedance properties with high lateral resolution was developed by combination of electrochemical impedance spectroscopy (EIS) with scanning electrochemical microscopy (SECM), allowing to identify and visualise microscopic domains of different conductivity/electrochemical activities on solid/liquid interfaces immersed into an electrolyte.