Abstract: An air-cooled fuel cell structure with an air-guiding element is provided. The air-cooled fuel cell structure includes a fuel cell module, a fan cover, an electric fan, and the air-guiding element. The fan cover has a first opening and a second opening. The first opening of the fan cover is hermetically coupled to a first end portion of the gas flow channels of the fuel cell module. The electronic fan is disposed above the second opening of the fan cover. The air-guiding element is disposed in the fan cover. The air-guiding element guides gas flow in the fan cover to ensure uniform distribution of the gas flow in the gas flow channels of the fuel cell module. Thus, the temperature difference inside the fuel cell module can be reduced and the efficacy of the fuel cell module can be raised.

Abstract: A fuel cell structure with a porous metal plate includes a membrane electrode assembly (MEA), a first porous metal plate, a metal plate, and a pair of end plates. The first porous metal plate and the metal plate are disposed on opposite outer surfaces of two gas diffusion layers (GDLs) of the MEA, respectively, and have fuel channels contacting with the GDLs. The end plates are arranged on outer surfaces of the first porous metal plate and of the metal plate, respectively, to close cooling-liquid flow channels of the first porous metal plate and of the metal plate. A pressure difference between fuel and cooling liquid within the fuel cell structure pushes the cooling liquid flowing through the cooling-liquid flow channels of the first porous metal plate to seep into the fuel channels spontaneously and hence humidify the fuel automatically, thereby maintaining the reaction efficiency of the fuel cell structure.

Abstract: A fuel cell structure having combined polar plates and the combined polar plate thereof are disclosed. The fuel cell structure includes a membrane electrode assembly, the combined polar plate, and a charge collection plate. The combined polar plate and the charge collection plate are arranged on outer surfaces of the membrane electrode assembly. The combined polar plate includes a non-porous plate and a porous plate. The non-porous plate has a base plate and a frame which together define a recess. A portion of the base plate free of the frame has at least one flow channel. The porous plate is received in the recess and sandwiched between the membrane electrode assembly and the base plate. Pores of the porous plate increase flow rate of fuel, and the flow channel drains water, a product of electrochemical reaction, from the fuel cell structure quickly to enhance performance of power generation.