TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Equipment: The pressurizing part preferably includes the already-specified electrochemical compression part and the current-controlling part.Both sides of the proton conductor are provided with a catalyst layer.Such proton conductor is particularly made from a cluster of fullerene molecules and carbon as the main components, and a structural body of mainly tubular or/and linear carbon, the structural material of which contains a derivative carrying a group with proton-dissociating properties introduced into the carbon atoms, and the proton conductor mediates the generation of hydrogen gas at the first electrode before migrating toward the second electrode.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Equipment: The electrolysis device part, pressurizing part and filling part are regulated by a system-controlling part.A hydrogen pressure-detecting means is available for sensing the hydrogen pressure at the hydrogen gas output side in the pressurizing part, and when the predetermined pressured is reached, a signal is sent from this means to stop action of the pressurizing part, or to switch to another tank when filling hydrogen.Steam or steam-containing atmosphere is allowed to contact with the face without densely packed proton conductors in the first electrode, and hydrogen gas is generated from the second electrode before compression.The pressurizing part or fuel cell part is particularly regulated by a system-controlling part, in which action of the hydrogen gas compression in the pressurizing part or fuel cell part is selected.A second fuel cell can also be installed for operating reversibly with hydrogen gas and oxygen gas or oxygen-containing gas supplied from the filling part, and electrochemical energy can be obtained from this second fuel cell.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Equipment: The group with proton-dissociating properties is particularly -XH or -OH or -YOH or -OH, -OSO3H, -COOH, -SO3H, -OPO(OH)2 or/and -CH2-CH2-SO3H;X = an atom or atomic group with divalent bonding arm;H = hydrogen;X = an arbitrary atom or atomic group with divalent bonding arm.The fullerene molecule is especially a spherical carbon cluster molecule Cm (m = 36, 60, 70, 76, 80, 82, 84, 86, 88, 90, 92, 94, 96 etc.). EXAMPLE - The hydrogen gas manufacturing and filling equipment as well as the electrochemical equipment were assembled as specified, then tested.