Publications by Augustin Mc Evoy

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Oxygen diffusion is treated in a dense electronically conducting cobaltate pellet blocked ionically on one surface, electronically on the other, and sealed on its cylindrical periphery. A procedure is developed for extracting the chemical diffusion and surface exchange coefficients for oxygen by use of the asymptotic equations derived for the current response to a potential step at short and long times. It is shown that, while the formation of interfacial phases by reaction between the sample and the electr

Incident solar radiation is the most fundamental of the sustainable energy sources, being at the origin of all others - wind and wave, biomass and even fossil fuels which represent stored solar energy over a geological time scale. Only nuclear and geothermal sources are non-solar. The direct conversion of incident solar radiation into the most convenient energy vector, electricity, motivates the development of lower cost, higher efficiency and larger area photovoltaic devices and systems. Their history, tec

Samples of yttria-stabilized zirconia manufactured by the following fabrication procedures, were obtained from commercial sources: (i) hot isostatic pressing; (ii) tape casting; (iii) vacuum plasma spraying, and (iv) calendering. The ionic conductivities of these samples were measured by (a) impedance spectroscopy; (b) the four-point probe method; (c) the current-interruption technique, and (d) the van der Pauw technique. The tape-cast and hot pressed samples showed good and very reproducible conductivity v

The present invention relates to a system using and/or processing fuel, wherein a catalytically active element is desensitised to impurities present in the fuel. The inventors thus surprisingly found that a fuel processing system, which may be a fuel cell ...

A photovoltaic Schottky-barrier element comprising a semiconductor substrate carrying a ruthenium dioxide layer as the metallic contact thereof. A solar cell and a photochemical cell are also described comprising, as the photovoltaic element or electrode, respectively, thereof, a photovoltaic Schottky-barrier element of the present invention.

Shows that the Nernst equation can be derived directly from basic thermodynamics principles - the Boltzmann distribution and a field-charge interaction energy.

Augustin Mc Evoy

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Simultaneous determination of chemical diffusion and surface exchange coefficients of oxygen by the potential step technique

Photovoltaic cells for sustainable energy

Conductivity measurements of various yttria-stabilized zirconia samples

Desensitised fuel cell system

Photovoltaic Schottky-barrier elements

The Nernst equation

Protonic Electroceramics for Fuel Cells

Sulfur-Tolerant Cermet Anodes

Metal/non-metal interfaces. The wetting of magnesium oxide by aluminum and other metals

Plasma synthesis and electron spectroscopy for chemical analysis/x-ray photoelectron spectroscopy of gallium arsenide

Lanthanide co-doping of solid electrolytes: AC conductivity behavior

Effect of ruthenium dioxide layers on the photoelectrochemical behavior of p-type semiconductor electrodes

Dye and materials development for sensitized electrochemical photovoltaics

Metal/non-metal interfaces. Adhesion of gold on mica

Electroless deposition of electrodes in solid-oxide fuel cells

Silicon polytungstate (SiW12O40)4--derivatized titanium dioxide/electrolyte interfaces

Electrochemical photooxidation of carboxylates on cadmium sulfide electrodes

Impedance characteristics of platinum electrodes on yttria-stabilized zirconia

High-dispersion d.c. sputtered platinum-titania powder catalyst active in ethane hydrogenolysis

Comments on M. Etman's paper on Flat-band and photocurrent onset potentials of layered tungsten selenide (WSe2) anodes