NOVELTY - The system such as cartridge for hydrogen generation by the hydrolysis of a solid fuel, comprises a reaction chamber (110) for containing a boron hydride, a liquid distributor (150), which is disposed within the reaction chamber and comprises a channel (160), an inlet and an outlet, an actuator for moving the liquid distributor relative to the reaction chamber, an aqueous reagent storage chamber (120), a conduit line (135) for conveying the aqueous reagent from the storage chamber to the liquid distributor, a liquid reagent regulator, and a hydrogen gas outlet.    USE - The system such as cartridge is useful for hydrogen generation (claimed) by the hydrolysis of a solid fuel.    ADVANTAGE - The system is compact and enables safe hydrogen generation.    DETAILED DESCRIPTION - The system such as cartridge for hydrogen generation by the hydrolysis of a solid fuel, comprises a reaction chamber (110) for containing a boron hydride, a liquid distributor (150), which is disposed within the reaction chamber and comprises a channel (160), an inlet and an outlet, an actuator for moving the liquid distributor relative to the reaction chamber, an aqueous reagent storage chamber (120), a conduit line (135) for conveying the aqueous reagent from the storage chamber to the liquid distributor, a liquid reagent regulator, and a hydrogen gas outlet, where reaction of the boron hydride and the aqueous reagent generates hydrogen and a fluid non-gaseous product, and the liquid distributor is configured to allow the fluid nongaseous product to pass through the channel. The reaction chamber and the liquid reagent storage chamber are arranged in a volume exchanging configuration. The liquid reagent storage chamber comprises an inner container. The generating system includes a movable or flexible wall separating the reaction chamber and the liquid reagent storage chamber, and a gas permeable membrane in contact with the reaction chamber, where the membrane is configured to allow hydrogen to pass through the membrane while preventing solid and liquid materials from passing through the membrane. A portion of the gas permeable membrane is exposed in the reaction chamber by movement of the liquid distributor, which comprises a heating element and a catalyst layer and is axially or radially disposed within the reaction chamber. The aqueous reagent is water or an acidic solution. The liquid reagent regulator is a peristaltic-, a piezoelectric-, a piston-, a diaphragm-, a centrifugal- or an axial flow pump, or a solenoid-, a ball-, a pinch- and a diaphragm valve. The inner housing is contained within an outer housing, and the space between the inner housing and the outer housing comprises the gas storage region. An INDEPENDENT CLAIM is included for a method of generating hydrogen.    DESCRIPTION OF DRAWING(S) - The diagram shows a hydrogen generator.    Reaction chamber (110)    Storage chamber (120)    Conduit line (135)    Liquid distributor (150)    Channel. (160)