NOVELTY - The structure has a cathode/anode dummy cell stacked between a reaction cell of a stack power generator and end plates (EPs) at ends of the structure to discharge water out of the structure, where the cathode/anode dummy cell comprises a combination of an anode plate (AP), a cathode plate (CP) and a dummy layer (D-L). The dummy layer is formed such that a metallic plate or a conductive plate is inserted between gas diffusion layers (GDLs). An end cathode plate (ECP) or an end anode plate (EAP) is stacked on a surface, where the dummy cell contacts the end plates at the ends of the structure.    USE - Stack structure for a fuel cell i.e. polymer electrolyte membrane fuel cell, which converts chemical energy of a fuel into electrical power, utilized in different vehicles. Uses include but are not limited to motor cars e.g. passenger cars, sport utility vehicles (SUV), buses, trucks, watercrafts such as boats and ships, aircrafts, hybrid vehicles, electric cars, plug in type hybrid electric vehicles and hydrogen-propelled vehicles.    ADVANTAGE - The structure includes the dummy cell for effectively discharging condensate water of the structure. The fuel cell converts chemical energy of the fuel into electrical power by carrying-out of electrochemical reactions in the structure without converting chemical energy in warmth by incineration. The productivity of the structure can be increased. The structure can be manufactured in a cost effective manner with simple structure. The dummy cell is stacked between the reaction cell of the stack power generator and the end plates, so that the dummy cell serves as a buffer, thus enhancing insulation effect for outer cells of the stack power generator.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a stack structure of a fuel cell stack with a dummy cell.'(Drawing includes non-English language text)'    Anode plate (AP)    Cathode plate (CP)    Dummy layer (D-L)    End anode plate (EAP)    End cathode plate (ECP)    End plates (EPs)    Gas diffusion layers (GDLs)