NOVELTY - A fuel cell (10) comprises cell unit comprising first and second separators; and electrolyte-electrode assembly having electrolyte and pair of electrodes on respective sides of the electrolyte, the electrolyte-electrode assembly being sandwiched between the first and second separators in a stacking direction. An outer periphery of the electrolyte-electrode assembly is integrally provided with frame units (28a) comprising polymer material.    USE - A fuel cell.    ADVANTAGE - The fuel cell has first and second separators which are manufactured efficiently, making the fuel cell to be economically produced.    DETAILED DESCRIPTION - Fuel cell (10) comprises cell unit comprising first (16) and second (20) separators; and electrolyte-electrode assembly having electrolyte and pair of electrodes on respective sides of the electrolyte, the electrolyte-electrode assembly being sandwiched between the first and second separators in a stacking direction. An outer periphery of the electrolyte-electrode assembly is integrally provided with frame units (28a) comprising polymer material. Fluid communication holes are provided as through holes in stacking direction in each of the frame units. The fluid communication holes have reactant gas inlet communication hole (30a), reactant gas outlet communication hole (30b), cooling medium inlet communication hole (32a), and cooling medium outlet communication hole (32b). A seal is sandwiched between the frame units that are adjacent to each other in the stacking direction. It surrounds and seals the fluid communication holes and an outer periphery of a reaction surface of the electrolyte-electrode assembly. The first and second separators each has 2 plates with an identical outer shape, outer peripheral edges of the first and second separators being arranged inside the fluid communication holes. Each of the frame units has a rib projecting in a thickness direction around an outermost periphery of the frame unit and the fluid communication holes.    DESCRIPTION OF DRAWING(S) - The drawing is an exploded perspective view of the fuel cell.    Fuel cell (10)    First (16)    Second (20)    Frame units (28a)    Gas inlet communication hole (30a)    Gas outlet communication hole (30b)    Cooling medium inlet communication hole (32a)    Cooling medium outlet communication hole (32b)