NOVELTY - The device has an aluminum alloy electrode (2), an electrolyte (3) formed by a hydroxide and water solution, and a casing (4) formed by an inner layer (5) of carbon (coal, graphite, etc.) or conductive paste and an outer layer (6) of conductive metal. The solution can also be water, alcohol and hydroxide; water, salt and hydroxide; water, hydroxide and aluminate; water, alcohol, hydroxide and aluminate; water, salt, hydroxide and aluminate; and can contain a reagent.    USE - Electricity generating device for use as an electricity generator and as an electricity and hydrogen generator.    ADVANTAGE - Provides a simple, low cost and small sized electricity generator to feed a fuel battery system and that allows generation of hydrogen and/or electricity based on the impedance of the external circuit. Enables generation of portion of electricity of direct form in the reactor, with an elevated yield more than with fuel batteries. The electrode can be of an impure aluminum alloy, can be made with residues of industrial processes and be composed of a solid bar, briquette (pressed shaving) or aluminum alloy dust pressing. The device does not include any impermeable membrane intern, thus generated intensity can be greater and the durability is greater, in spite of which the battery is not polarized. The electrode does not comprise the housing, thus circuit can be fed continuously, increasing the durability of the device. The housing does not contain polluting elements, the metal and the carbon of this is not consumed, thus increasing the durability of the device and facilitating the recycling of the device. The device does not discharge when eliminating the contact between the electrode and the electrolyte. The electrolyte is liquid, thus impurities and the product of the reaction of aluminum do not prevent the reaction of the electrode. The device can work with alkaline dissolutions like electrolyte, with molarities lower than the ones required by the alkaline batteries. The residues of the device are easily recyclable, can again transform into aluminum and hydroxide by energy contribution.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of the electricity generating device.    Aluminum alloy electrode (2)    Electrolyte (3)    Casing (4)    Inner layer (5)    Outer layer (6)