NOVELTY - The hydrogen gas generation device comprises a container for an alkaline solution having an inlet for borohydride tablets that dissolve to form a borohydride solution, an immobilized organic pigment catalyst, a hydrogen gas outlet, an interior pressure gauge (13) placed above the hydrogen gas outlet, and an interior pH electrode to measure the pH of the alkaline solution. The organic pigment catalyst is immobilized on a plastic substrate consisting of ceramics, cements, glass, zeolites, perovskites, fibers, fibrous material, mesh, polymeric resin and plastic.    USE - The device is useful for on-board generation of hydrogen gas for hydrogen-consuming device, and for vehicular applications such as hydrogen fuel cells or combustion engines.    ADVANTAGE - The device is capable of economically, reliably, safely and stably generating the hydrogen gas thus ameliorating environmental pollution and reducing the world's dependency on fossil fuels or petroleum and the fear of depleted energy sources.    DETAILED DESCRIPTION - The hydrogen gas generation device comprises a container for an alkaline solution having an inlet for borohydride tablets that dissolve to form a borohydride solution, an immobilized organic pigment catalyst, a hydrogen gas outlet, an interior pressure gauge (13) placed above the hydrogen gas outlet, and an interior pH electrode to measure the pH of the alkaline solution. The organic pigment catalyst is immobilized on a plastic substrate consisting of ceramics, cements, glass, zeolites, perovskites, fibers, fibrous material, mesh, polymeric resin and plastic and fastened on an end of an armature (15), which is manipulated so that an immersion depth of the catalyst into the borohydride solution is varied to expand the total area that is performing the hydrogen gas evolving borohydride decomposition reaction of borohydride plus water yielding metaborate and hydrogen gas. The hydrogen gas is produced from the organic pigment catalyzed reaction. The organic pigment catalyst is obtained by blending a solid, loose organic pigment catalyst powder with a poly (methyl methacrylate) binder and fixing the blended material onto the plastic substrate. A hydrogen-consuming device uses a substantial portion of the hydrogen gas reaction product, is operably connected with the hydrogen generating system, and consists of a fuel cell, a combustion engine and/or a gas turbine.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a hydrogen gas generation device.    Spring-loaded plunger (11)    Pressure gauge (13)    Immobilized catalyst (14)    Armature (15)    Gearwheel. (16)