Abstract:
According to the present invention, provided is a method for preventing decrease in open circuit voltage due to electronic conduction through a CeO2-based solid electrolyte which is generated by applying the solid electrolyte in a metallic thin film support type cell for a solid oxide fuel cell in which a metallic thin film is used as a support, a hole is selectively formed only at a central portion of the metallic thin film which is required in an electrode reaction, no pore is present in an outer shell, and a dense metallic thin film structure is provided.
Abstract:
PURPOSE: A manufacturing method of a cell for a metal supporter type solid oxide fuel cell is provided to prevent a crossover phenomenon of fuel electrode gas and air through a solid electrolyte layer by forming a sealing layer on the solid electrolyte layer through RF sputtering. CONSTITUTION: A manufacturing method of a cell for a metal supporter type solid oxide fuel cell comprises: a step of laminating a green sheet forming a solid electrolyte layer on a fuel electrode layer; sintering the obtained laminate; and forming a sealing layer on the solid electrolyte layer through RF sputtering. The cell for the metal supporter type solid oxide fuel cell includes a metal supporter (11), the fuel electrode layer (16), the solid electrolyte layer (17), and an air electrode layer (19). The sealing layer (18) with a protrusion (18a) which is inserted between cracks (17a) formed on the solid electrolyte layer is inserted in between the solid electrolyte layer and the air electrode layer.
Abstract:
A stack for a molten carbonate fuel cell is provided to realize improved life characteristics by preventing thermal deformation in a simple and cost-efficient manner. A stack for a molten carbonate fuel cell comprises: a membrane-electrode assembly(10) comprising a cathode(2) and an anode(3) facing to each other, and an electrolyte membrane(1) interposed between the cathode and the anode and comprising a molten carbonate electrolyte having an active region that is in contact with the cathode and the anode and an inactive region that is not in contact with the cathode and the anode; and bipolar plates(5,6) disposed on both surfaces of the membrane-electrode assembly and forming a liquid melting region(9) while being in contact with the inactive region, wherein the liquid melting region comprises a zinc coating layer(20) formed in contact with the bipolar plate and an aluminum coating layer(22) formed on the zinc coating layer.
Abstract:
A separator for a solid oxide fuel cell is provided to improve oxidation resistance and conductivity by forming an oxide layer on the surface of a stainless steel at a high temperature under oxidative atmosphere. A separator for a solid oxide fuel cell comprises a ferrite-based stainless steel sheet; and any one which is selected from yttrium(Y), lanthanum(La), yttrium-manganese(Y-Mn) mixture and lanthanum-yttrium mixture and is coated on the surface of the ferrite-based stainless steel sheet. Preferably the coating has a thickness of 50-1,000 Angstrom. Preferably the yttrium-manganese mixture contains 90 wt% or less of manganese.