FUEL CELL

摘要

A conventional fuel cell comprises a plurality of cell elements stacked via separator plates, each cell element comprising an electrolyte plate, and cathode and an anode which sandwitch the electrolyte plate. A power generation part of the fuel cell is defined by the electrolyte plate, cathode and an anode. Oxidizing gas and fuel gas are supplied to each cell element in the same direction but the direction is opposite to the gas flow of an adjacent cell element. In the improvement, preheating devices are provided next to the power generation part in the direction gases flow as a part of the fuel cell, in a manner such that both incoming and outgoing gases pass through the preheating device. The preheating device includs a plurality of heat exchange promoting elements in the form of projections provided on both faces of the separator plate.