Abstract: Catalytic system comprising at least two components: a catalyst for the hydrolysis reaction of metal borohydrides to hydrogen; and a material in solid form, the dissolution reaction of which in water is exothermic.

Abstract: The present invention relates to a support for a planar fuel cell core, produced using a material permeable to the fuel of the cell, and sealed over at least one of its outer faces.

Abstract: The invention relates to a process for the manufacture of an ion-conducting polymer membrane for a fuel cell and to a fuel cell core comprising such a membrane. It also relates to a fuel cell comprising such a membrane and/or such a cell core. The process of the invention comprises manufacturing an ion-conducting polymer membrane of a fuel cell by plasma chemical vapor deposition of at least two identical or different polymerizable monomers, each comprising: at least one polymerizable group, and at least one precursor group of the ion-conducting functional group chosen from the group formed by a phosphonyl ester, an acyl ester, a sulfonyl ester, a carbonyl halide or a thionyl halide.

Abstract: The invention relates to an ion/electron-conducting composite polymer membrane (10?), which comprises at least two gas-tight ion-conducting polymer portions (11?) joined together directly by a gas-tight electron-conducting polymer portion (12?). It also relates to processes that enable this membrane to be manufactured, and also to a planar fuel cell core comprising it. Applications: production of planar fuel cells used for generating electrical power intended for stationary applications, transport applications and portable and transportable applications.

Abstract: A product having superhydrophilic or superhydrophobic surface physical properties comprising a substrate coated on its surface with a structuring layer added on to the surface and with a film deposited on the layer. The film is continuous, and the physical properties of the surface are conferred by the nature of the film, the surface of the layer and the deposited film having roughnesses with nanometric-size dimensions.