The commercialization of lithium-sulfur batteries is hindered by low cycle stability and low efficiency, which are induced by sulfur active material loss and polysulfide shuttle reaction through dissolution into electrolyte. In this study, sulfur-impregnated disordered carbon nanotubes are synthesized as cathode material for the lithium-sulfur battery. The obtained sulfur-carbon tube cathodes d...

Projected next-generation linac-based light sources such as PERL or the TESLA free-electron laser (FEL) generally assume, as essential components of their injector complexes, long-pulse photocathode rf electron guns. These guns, due to the nature in which they are operated, may be more susceptible to ion bombardment damage of their cathodes than conventional rf guns. This paper explores this po...

The autocatalytic effect of the reduction products of some selected Schiff bases on their reduction on copper and lead cathodes was investigated. The repitition of reduction efficiency measurem ents in the sam e solution and the pre-treatm ent of the cathode or the solution by electrolysis confirmed the au tocataly tic effect of the produced secondary amines. Different amines were te sted as ex...

A theoretical work based on computer modeling is presented in order to explain the difference on the hydrogen electrochemical loading dynamics for two shapes of palladium cathodes. Pd foils and wires have been investigated solving the transport equations, in order to study the effect of self stress propagating. The results allow us to study the influence of the stress relaxing (via dislocation ...

By applying to electrolysis cathodes a technique that produces essentially only oxides that are volatile at room temperature, spectroscopically determined masses between 222 and 351 are found that cannot be ascribed to known compounds. In particular the masses found between 231 and 240 AMU cannot be ascribed to random signals but do correspond to CO2 the carbon of which is a neutron-rich nuclid...

We present an analysis of the thermal reduction of delithiated LiMnPO4 and LiFePO4 based on the quarternary phase diagrams as calculated from first principles. Our results confirm the recent experimental findings that MnPO4 decomposes at a much lower temperature than FePO4, thereby potentially posing larger safety issues for LiMnPO4 cathodes. We find that while substantial oxygen is released as...

Several experiments of loading Hydrogen and Deuterium into different metals foils and thin film metal layers by using them as cathodes in prolonged electrolysis experiments were performed. Before and after experiments the cathode surface was analyzed by the Scanning Electron Microscopy technique. Results reveal that different elements that were not present in the surface layer before the experi...

A simplified 5-RC transmission line equivalent circuit was introduced. Manganese dioxide cathodes from three commercial primary alkaline cells were investigated by means of ac impedance technique. Cathode Ohmic resistance, Faraday resistance for the reduction of MnO2, proton diffusion rate inside the lattice of EMD and electrochemical accessible surface area were obtained by numerical fitting o...