NOVELTY - A fuel cell stack (100) includes a membrane electrode assembly (10) comprising an anode electrode (11), a cathode electrode, and an electrolyte membrane (13) positioned between the anode and cathode electrode; a separator containing at least one channel for a flow of fuel and/or oxidant, and is closely adhered to the membrane electrode assembly; and a gasket (40) with a two-layer structure stacked between the separator and the membrane electrode assembly. The gasket prevents fuel and oxidant from leaking outside the stack from anode and cathode microporous layer.    USE - As pollution-free power sources, as self-generator for buildings, as power supply for electric vehicle, as a portable power supply.    ADVANTAGE - The first gasket prevents fuel from leaking outside the fuel cell stack from the anode microporous layer and the second gasket prevents oxidant from leaking outside the fuel cell stack from the cathode microporous layer. Thus, the gasket prevents parts of the fuel cell stack from being polluted, and reduces the risk of leakage to outside impact or cracking of parts of the fuel cell.    DETAILED DESCRIPTION - A fuel cell stack (100) includes a membrane electrode assembly (10) comprising an anode electrode (11), a cathode electrode, and an electrolyte membrane (13) positioned between the anode and cathode electrode; a separator containing at least one channel for a flow of fuel and/or oxidant, and is closely adhered to the membrane electrode assembly; and a gasket with a two-layer structure stacked between the separator and the membrane electrode assembly. The first gasket prevents fuel from leaking outside the fuel cell stack from the anode microporous layer and the second gasket prevents oxidant from leaking outside the fuel cell stack from the cathode microporous layer. The first layer of the gasket is positioned on the separator, and the second layer of the gasket has thinner thickness than the first layer. The fuel cell stack further comprises a fuel manifold that supplies fuel to the anode microporous layer of each membrane electrode assembly and an oxidant manifold that supplies an oxidant to the cathode microporous layer of each membrane assembly. The fuel includes a liquid phase fuel and/or a gas phase fuel. An INDEPENDENT CLAIM is included for manufacturing fuel cell stack involving preparing a membrane electrode assembly; preparing a separator including channels for a flow of fuel and/or oxidant; forming a first layer of a gasket on the separator; applying a second layer of a gasket on the first layer of the gasket; and bonding the separator and the membrane electrode assembly prior to hardening the second layer of the gasket.    DESCRIPTION OF DRAWING(S) - The figure shows an exploded perspective view of the fuel cell stack.    Membrane electrode assembly (10)    Anode electrode (11)    Electrolyte membrane (13)    Bipolar plate (20)    Gasket (40)    Fuel cell stack. (100)