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A new method for the prepn. of nanostructured TiO2 films, based on the compression of a TiO2 powder is presented, and its relevance for the prodn. of dye-sensitized solar cells is discussed. By applying a pressure (>200 kg cm-2) on a film of TiO2 powder, a ...
Recent progresses in the technology of the Ni-Zn batteries have a direct influence on the improvement of the performance of hybrid electric vehicles. This paper evaluates the progresses of these batteries in particular for application on hybrid light vehic ...
A low-power transceiver for ISM applications in the 868-MHz band has been integrated in a 0.8-μm BiCMOS technology. The receiver part is based on the super-regenerative principle. The system includes two time-shared control loops, one for the selectivity a ...
Recent developments make appear new devices for energy storage, such as supercapacitors. Those components are able to store a high energy density. Even if this energy is still lower than the energy batteries can store, thos components can be loaded and/or ...
Supercapacitors are new components ale to store a high energy density aven if this energy is still lower than the energy batteries can store. This paper shows how supercapacitors can be used to supply electric vehicle such as busses and tramways. The "on-b ...
The first observation of electrochemiluminescence (ecl) based on the redox-cycling of a ruthenium chelate covalently linked to a protein and placed in aqueous medium containing neither solvent nor reducing compound is reported here. Ecl experiments based o ...
Band-structure (BS) calculations of the density of states (DOS) using the full potential augmented plane waves code WIEN97 were performed on the four single-valence vanadium oxides VO, V2O3, VO2 and V2O5. The DOS are discussed with respect to the distortio ...
The electrochem. properties of IrO2 nanoparticles deposited on a synthetic boron-doped diamond surface (BDD/IrO2) were investigated. After a description of the prepn. procedure by thermal decompn. technique, the morphol. characterization of the samples by ...
The prepn. of mesoporous Cr/AlPO was carried out under hydrothermal conditions. The catalyst was characterized by low angle XRD, N-adsorption, diffuse reflectance UV-visible spectroscopy, ESR and thermal anal. The catalytic activity was tested for vapor ph ...
Because of their low voltage level, supercapacitors need arrangement with series connection in order to obtain voltage levels from few dozen to few hunderd of volts. As for batteries, devices have then to be defined to balance the voltages across each seri ...
