NOVELTY - The suspension for the production of hydrogen useful for fuel cell or a combustion motor, comprises a powder of metal, alloy and/or compound of a metal, and a polar suspending medium, which is mixed with water and/or alcohol that releases hydrogen on contact with the powder, or in which water and/or the liquid dissolves, but which does not react with the powder. The powder has an average grain size of 10-30 mu m and the suspension optionally contains one or more auxiliary substances to keep the powder suspended.    USE - Suspension for the production of hydrogen useful for fuel cell or a combustion motor (claimed).    ADVANTAGE - The suspension ensures rapid releasing of hydrogen with high yield.    DETAILED DESCRIPTION - The suspension for the production of hydrogen useful for fuel cell or a combustion motor, comprises a powder of metal, alloy and/or compound of a metal, and a polar suspending medium, which is mixed with water and/or alcohol that releases hydrogen on contact with the powder, or in which water and/or the liquid dissolves, but which does not react with the powder. The powder has an average grain size of 10-30 mu m and the suspension optionally contains one or more auxiliary substances to keep the powder suspended. The polar suspending medium is a polymer stabilized at a temperature of up to 150 degrees C or polar organic solvent with a boiling point of greater than 150 degrees C. The polymer has a boiling point of greater than 150 degrees C. The suspending medium has a flash point of greater than 200 degrees C, and a vapor pressure of less than 0.1 mbar at 25 degrees C. The powder consists of an alloy of alkali- and/or alkaline earth metals with further metallic elements or metal hydrides. The weight portion of the powder in the suspension is 50 mass.% and the weight portion of the auxiliary substance is less than 2 mass.%. INDEPENDENT CLAIMS are included for:    (1) method for the production of hydrogen; and    (2) a device for the production of hydrogen.    DESCRIPTION OF DRAWING(S) - The figure shows a graph for releasing hydrogen from the suspension containing aluminum-magnesium alloy (Drawing includes non-English language text).