Showing papers in "Electrochimica Acta in 1995"

TL;DR: In this paper, the water transport numbers for protons in a variety of available poly (perfluorosulfonic acid) membranes are presented as a function of water content, and it is shown that, for membranes equilibrated with water vapor over a wide range of activities, a water drag coefficient of unity is observed.

TL;DR: In this paper, Boltammetry combined with singlepotential alteration infrared spectroscopy (SPAIRS) was used to study the extent of adsorbed CO produced at Pt, Ru and Pt-Ru alloy electrodes during methanol and formic acid oxidation in acidic supporting electrolyte.

TL;DR: In this article, it was shown that the inclusion of large cations through a simple ion-exchange process renders perfluorosulfonate ionomers moderately melt-processable and significantly improves the structural integrity of the catalyst layers.

TL;DR: In this article, a comparison of optical and photoelectrochemical properties of the TiO2 layer indicates a relative enhancement of light harvesting efficiency due to lowering of reflection losses in the electrolyte.

TL;DR: In this paper, the transport and electrochemical properties of gel-type ionic conducting membranes formed by immobilizing liquid solutions of lithium salts in a poly(methylmethacrylate) matrix have been determined.

TL;DR: In this article, a comparison between the properties of composite polymeric electrolytes containing inorganic and organic fillers is made based on conductivity data obtained from impedance spectroscopy and structural characteristics based on FT-IR, NMR, DSC and EDX.

TL;DR: In this article, the impedance of the La 1 − x Sr x MnO 3 -Yttria-stabilized zirconia oxygen electrode has been analyzed as a function of the overpotential, temperature and oxygen partial pressure.

TL;DR: In this article, the use of mathematical modeling and computer simulations in the understanding of lithium/polymer battery performance is discussed, with particular attention to the assumptions involved in the analysis.

TL;DR: In this article, the Laplace transformed diffusion equation is solved for finite diffusion in planar, cylindrical and spherical geometry with a Nernstian or an impermeable diffusion layer boundary condition.

TL;DR: In this article, pre-irradiation grafting of styrene/divinylbenzene mixtures into poly(fluoroethylene-co-hexafluoropropylene) films and subsequent sulfonation was used for fuel cell applications.

TL;DR: In this paper, the influence of three parameters on the performance of LSMy cathodes has been investigated: the adhesion of the cathode to the electrolyte, the addition of Y2O3-stabilized ZrO2 (YSZ), and the excess of Mn (LSM1.1).

TL;DR: In this paper, a review of the history, status and prospect of solid polymer electrolyte and batteries using it is given, including the background and future prospects of Solid Polymer Electroide (SPE) batteries.

TL;DR: In this paper, the electrochemical behavior of Cu, Cu-Al and Al-Al-Ag alloys in aqueous solutions of NaCl (0.5 M, pH = 3.00) was studied by means of voltammetric methods and electrochemical impedance spectroscopy.

TL;DR: In this article, the authors used microelectrochemical methods and scanning tunneling microscopy (STM) to study localized corrosion processes on passive metals in the μm-and nm-range.

TL;DR: In this paper, the authors studied interfacial phenomena in PEO-based composite polymer electrolytes (cpe) which were stabilized by a high surface-area oxide matrix such as alumina or magnesia.

TL;DR: In this paper, a transition metal chalcogenide material based on Mo-Ru-Se for electrocatalytic reduction of molecular oxygen in acid medium was chemically prepared by reacting the transition metal carbonyl compounds and selenium powder in xylene solvent (140 °C).

TL;DR: In this paper, an analysis is made of the performances of PEMFCs with Dupont's Nafion, Dow's experimental, and Asahi Chemical's Aciplex-S® membranes.

TL;DR: In this paper, the atomic structure of Si(111) surfaces is investigated by in-situ STM and electrochemical measurements in NH4F solutions of 2 < pH < 8.

TL;DR: In this paper, a tetracarboxylic cobalt phthalocyanine (CoPcTc) has been adsorbed on carbon black (C) and has been heat-treated in Ar at various temperatures ranging from 100 to 1100 degrees C to produce catalysts for the electroreduction of oxygen in polymer electrolyte fuel cells.

TL;DR: In this paper, a novel group of polymer electrolytes based on poly(vinyl sulfone) (PVS) and polyvinylidene fluoride (PVdF) polymers, plasticized with highly conductive solutions of LiClO4, LiN(CF3SO2)2 or LiAsF6, were prepared via in situ photopolymerization and solution casting, respectively.

TL;DR: In this paper, the application of effective medium theory to a description of a temperature and composition dependence of conductivity of composite polymeric electrolytes is presented, where the influence of grain size distribution, concentration and type of additives on conductivity is discussed.

TL;DR: In this paper, a water management technique for solid polymer electrolyte fuel cells is presented, which demonstrates both performance and diagnostic benefits, by imparting a water concentration gradient through the polymer membrane, thereby increasing the back diffusion rate of water.

TL;DR: In this paper, a complete description of the composition of the mixed copper-anion overlayers is given, and it is shown that the coadsorption of a copper adatom and the anion has a cooperative character and that the ion affects the kinetics and energetics of the copper deposition reaction.

TL;DR: In this paper, the role of surface defects in deposition kinetics was investigated in the underpotential and overpotential range of the deposition of Cu onto stepped Au(111) surfaces from sulfuric acid solutions.

TL;DR: In this article, the hydrogen evolution reaction was studied on electrolytically prepared amorphous smooth NiP(x) layers with a phosphorus content of 3 to 14 wt%.

TL;DR: A brief critical review of the lithium polymer electrolyte battery technology is presented in this paper, which addresses some of the key performance characteristics which could yield a superior LPE battery technology.

TL;DR: In this paper, the influence of Nafion thickness on electrocatalytic properties for H2 oxidation and O2 reduction was investigated to predict an ideal structure of catalyst layer for PEFCs.

TL;DR: In this paper, the infrared spectra of adsorbeded CO 2 in detail was obtained with a Cu polycrystal electrode in aqueous electrolytes at 0 to 2 °C with regard to electrochemical reduction of CO 2 to hydrocarbons.

TL;DR: In this article, the underpotential deposition and bulk deposition of Ag on Au(111) has been investigated in H 2 SO 4 and HClO 4 solutions using electrochemical scanning tunneling microscopy (STM).

TL;DR: In this article, chemical bath deposition of chalcogenide semiconductors (CdS, ZnS, CdSe) was investigated and the relationship between the growth mechanism and the structure of the films was established from Transmission Electron Microscopy (TEM) and High Resolution TEM measurements.