NOVELTY - Prescription for electrolyzing aluminum in water for making hydrogen comprises Al, aluminum iodide (AlI3), aluminum bromide (AlBr3), aluminum chloride (AlCl3), and water; the six material mixture has eight prescriptions with different reaction speed and characters.    USE - The prescription for electrolyzing aluminum in water is useful for making hydrogen (claimed). The supplied hydrogen is useful for fuel battery on transportation tool.    ADVANTAGE - The movable device for electrolyzing aluminum in water for making hydrogen replaces a part gasoline for being applied in the hydrogen oil mixed to burn internal combustion engine; the oil saving ratio is about 40%. Because one half of the hydrogen making material weight is water, if the magnetic propulsion made of superconducting coil supplies power to the warships and submarine, it does not exhaust smoke without vibration, low noise, high speed making the submarine have better concealment.    DETAILED DESCRIPTION - Prescription for electrolyzing aluminum in water for making hydrogen comprises Al, aluminum iodide (AlI3), aluminum bromide (AlBr3), aluminum chloride (AlCl3), and water; the six material mixture has eight prescriptions with different reaction speed and characters; prescription one is water electrolysis aluminum 100 g, aluminum chloride hexahydrate (AlCl3.6H2O) 1-45 g, and water 100-300 g; prescription two is water electrolysis aluminum 100 g, AlCl3.6H2O 1-30 g, and water 100-300 g; prescription three is water electrolysis aluminum 100 g, AlCl3.6H2O 1-20 g, and water 100-300 g; prescription four is water electrolysis aluminum 100 g, AlCl3.6H2O 1-25 g, and water 100-300 g; prescription five is water electrolysis aluminum 100 g, AlCl3.6H2O 1-10 g, and water 1-16 g; prescription six is water electrolysis aluminum 100 g, AlCl3.6H2O 1-16 g, and water 100-300 g; and prescription eight is water electrolysis aluminum 100 g, AlCl3 1-8 g, AlI3 1-6 g; AlBr3 1-6 g, and water 100-300 g.    DESCRIPTION OF DRAWING(S) - The drawing shows the cross-sectional view of the device used for electrolyzing aluminum in water.