Abstract: The invention relates to a fuel generator (12) for a fuel cell based charger system, and a system containing a charger (10) and a fuel generator. The generator comprises a compartment (20?) containing aluminium, means (18?, 20?, 21, FW) for providing a solution of water and a water soluble compound capable of reacting with aluminium to generate hydrogen gas, when dissolved in water and brought into contact with the aluminium, and means (FS) for passing said solution into the compartment containing aluminium. The invention also provides a method of operating the system. It comprises providing a fuel generator and a hydrogen driven fuel cell based charger device having means for accommodating the generator. The generator and charger having a common interface cooperative for providing fluid communication between the generator and the charger. The system is primed by inserting the generator into the charger whereby the interface opens up fluid communication between selected parts of the system.

Abstract: The invention relates to a fuel cartridge (200) and comprises a reactor compartment (204) housing a reactive material in which an aqueous solution having a pH in the range 12.5 to 14 can be introduced to react with the reactive material to generate hydrogen gas. There is an inlet to said reactor compartment (204) for said aqueous solution and an outlet (216) for hydrogen gas. A porous and hydrophilic film (220) is provided in the reactor compartment at said inlet and having an extension over at least a part of the inner space of the reactor compartment. The film is adapted to convey said aqueous solution by capillary force to distribute the solution over the inside of said reactor chamber. The film is suitably provided against an inner wall of the reactor compartment and covers at least 50% of the inner wall, preferably the entire inner wall.

Abstract: The invention relates to a novel fuel cartridge for providing hydrogen gas on the basis a reactant system. Thus, a fuel cartridge for a fuel cell device, comprises a reactor compartment for storing a first reactant, a water compartment for storing water. It has a mixing compartment (106) containing a water soluble second reactant, and a fluid communication means (114) between the mixing compartment (106) and the reactor compartment (102) adapted to pass second reactant dissolved in water to the reactor compartment (102), in which the dissolved second reactant can react with the first reactant to generate a gas. Suitably, the fuel cartridge comprises an interface connectable to a water control mechanism disposed outside the cartridge, the water control mechanism configured to control a flow of the water between the water compartment and the mixing compartment such that the water mixes with and dissolves the second reactant in the mixing compartment.

Abstract: The invention relates to a fuel generator (12) for a fuel cell based charger system, and a system containing a charger (10) and a fuel generator. The generator comprises a compartment (20?) containing aluminium, means (18?, 20?, 21, FW) for providing a solution of water and a water soluble compound capable of reacting with aluminium to generate hydrogen gas, when dissolved in water and brought into contact with the aluminium, and means (FS) for passing said solution into the compartment containing aluminium. The invention also provides a method of operating the system. It comprises providing a fuel generator and a hydrogen driven fuel cell based charger device having means for accommodating the generator. The generator and charger having a common interface cooperative for providing fluid communication between the generator and the charger. The system is primed by inserting the generator into the charger whereby the interface opens up fluid communication between selected parts of the system.