Preparation of molecular hydrogen (I) comprises adding metallic aluminum and/or aluminum alloy in an aqueous aluminum chloride solution and dissolving under the formation of polyaluminumchloride. Independent claims are also included for: (1) a method of op...

A Process for manufacturing a porous body, in particular suitable as a membrane, e.g. for use in a fuel cell, is described. To provide membranes with high inertia having high porosity and big pore diameters the process comprises the following steps: a) pro...

Process for manufacturing a porous body, in particular suitable as a membrane, e. g. for use a fuel cell. To provide membranes with higher inertia, the process comprises the following steps: a) providing a thin substrate having the geometrical base of the ...

Current-collector electrodes for condensers, etc., are produced by coating a base (e.g., aluminum foil) with a porous, electrically conductive layer (e.g., of graphite or titanium) which is itself coated and preferably impregnated with a layer of polypyrro...