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Platinum-tungsten oxides supported on Vulcan carbon were incorporated by means of an impregnation method. XRD and TEM-EDX results indicated that the material is formed by a mixture of tungsten trioxide and platinum particles supported on carbon. XPS analysis showed the presence of tungsten trioxide, metallic platinum and platinum oxides (PtO and PtO2) on the surface of the material. The catalytic performance of PtWOx/C and Pt/C for the oxygen reduction reaction (ORR) was analyzed in the absence and presence of methanol throughout cyclic voltammetry and rotating disk electrode. The results indicated that the addition of tungsten trioxide increases both the catalytic performance of the ORR and catalyst's methanol tolerance.

A secondary battery of the type , carbon is described. The polymer was electrodeposited on porous carbon rods, in the form of consistent, rather thick, highly porous, and low‐resistance layers. The battery was assembled in a configuration similar to that of the classical R‐6 dry cell. The performance of the battery has been studied, and it shows characteristics comparable to those of conventional systems: moderate specific energy (50–100 Wh kg−1), very good coulombic efficiency (70–100%), low self‐discharge rate (

The formation of cadmium sulfide thin films by cathodic deposition of Cd2+ ions from a solution containing sulfur on different substrates (platinum, molybdenum, aluminum) is described along with the influence of the substrate on the formation and morphology. By evaporating a layer on the films deposited on aluminum, a heterojunction which exhibits photovoltaic effect is formed.