NOVELTY - The apparatus comprises a fuel cell stack (10), a cathode electrode positioned in a rear end of a humidifier (20) to oxidize hydrogen gas passing through the humidifier, and an anode electrode. The humidifier is positioned in the rear end of an exit (18) of the cathode electrode to humidify the reactionless hydrogen gas ejected from the electrode and an exit of the stack is connected to an entrance (24) of the cathode electrode in which the dry air is flowed in. The reactionless hydrogen that does not cause the hydracid reaction is ejected through the anode electrode exit.    USE - The apparatus is useful for removing hydrogen gas emitted from a fuel cell vehicle (claimed).    ADVANTAGE - The apparatus improves performance and durability of the vehicle.    DETAILED DESCRIPTION - The apparatus comprises a fuel cell stack (10), a cathode electrode positioned in a rear end of a humidifier (20) to oxidize hydrogen gas passing through the humidifier, and an anode electrode. The humidifier is positioned in the rear end of an exit (18) of the cathode electrode to humidify the reactionless hydrogen gas ejected from the electrode and an exit of the stack is connected to an entrance (24) of the cathode electrode in which the dry air is flowed in. The reactionless hydrogen that does not cause the hydracid reaction is ejected through the anode electrode exit or recirculates through a recycle blower (16) and is flowed into the anode electrode entrance. The dry air flowed in through the cathode electrode entrance passes through the humidifier, is changed to the wet air and is flowed into the cathode electrode. After the hydrogen molecule is oxidized with a catalyst reaction to the hydrogen ion, it is again supplied to the entrance of the cathode electrode and the hydrogen gas is used as a part of the hydrogen ion for reacting to oxygen. The catalyst: is a palladium plated mesh; passes through the humidifier; is recirculated at the stack; and absorbs hydrogen gas. The catalyst reaction is performed using a probe electrode, which applies voltage of 0.2-0.4 V.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of an apparatus for removing hydrogen gas emitted from a fuel cell vehicle.    Fuel cell stack (10)    Recycle blower (16)    Cathode electrode exit (18)    Humidifier (20)    cathode electrode entrance. (24)