Abstract: A hydrogen generator (201) is provided which comprises (a) a chamber (205) having a hydrogen-containing material (213) disposed therein; (b) a first fluidic pathway (241) containing said chamber, said first fluidic pathway including an upstream portion which is upstream of said chamber, and a downstream portion which is downstream from said chamber; (c) a second fluidic pathway (243) which does not include said chamber, and which is adjoined to said first fluidic pathway downstream from said chamber; and (d) a reservoir (203) containing a liquid medium in which said hydrogen-containing material is soluble, said reservoir being in fluidic communication with at least one of said first and second fluidic pathways.

Abstract: A device for generating hydrogen gas is provided. The device (101) comprises a first hydrogen-containing composition (107) that reacts with a second composition to evolve hydrogen gas; a dispenser (105) adapted to apply the first composition to a first porous member (109); and a conduit (111) adapted to supply the second composition to the first porous member. In a preferred embodiment, the first composition is selected from the group consisting of hydrides, borohydrides and boranes, the second composition is water, and the dispenser is spring-loaded and is charged with the first composition. As the first composition reacts with water at the interface to evolve hydrogen gas, the dispenser forces the reaction product across the interface and out of the dispenser, where it will not interfere with the progress of the hydrogen evolution reaction.

Abstract: A hydrogen generator, comprising (101), comprising (a) a reaction chamber (115) equipped with a tortuous passageway (247) for the flow of reactants therethrough, said passageway containing a catalyst disposed on a surface thereof; (b) a fluid; and (c) a hydrogen-containing material (125) that reacts with said fluid in the presence of said catalyst to generate hydrogen gas.

Abstract: A device for generating hydrogen gas is provided. The device (101) comprises a first hydrogen-containing composition (107) that reacts with a second composition to evolve hydrogen gas; a dispenser (105) adapted to apply the first composition to a first porous member (109); and a conduit (111) adapted to supply the second composition to the first porous member. In a preferred embodiment, the first composition is selected from the group consisting of hydrides, borohydrides and boranes, the second composition is water, and the dispenser is spring-loaded and is charged with the first composition. As the first composition reacts with water at the interface to evolve hydrogen gas, the dispenser forces the reaction product across the interface and out of the dispenser, where it will not interfere with the progress of the hydrogen evolution reaction.

Abstract: A method for dissipating heat in a hydrogen generator, comprising the steps of (a) providing a first chamber containing a first material selected from the group consisting of hydrates, (b) providing a second chamber containing a second material selected from the group consisting of hydrides and borohydrides, (c) causing the first material to undergo an endothermic reaction to evolve water, and (d) transporting a portion of the evolved water from the first chamber into the second chamber such that the second material undergoes an exothermic reaction to evolve hydrogen gas.