Abstract: The invention relates to a electrically conductive steel-ceramic connection comprising a steel interconnector and an electrically conductive ceramic joining layer arranged thereon. The interconnector comprises a ferritic steel containing Cr in a quantity ranging from 18 to 24% by weight. The ceramic layer contains perovskite of a formula Ln1-xSrxMn1-yCoyO3-? or Ln1-xSrxFe1-yCoyO3-?, wherein 0.1?x?0.4, 0.1?y?0.6, 0???x/2 and Ln=La—Lu. The inventive steel-ceramic connection is usable for a high-temperature fuel cell and regularly exhibits good adhesive properties and a low transition resistance (initial transition resistance R approximately equal to 0.01 ?cm2). Said steel-ceramic connection makes it possible to advantageously introduce a ferritic steel into high-temperature fuel cells. The inventive method for producing said steel-ceramic connection consists in pre-treating an inserted ceramic powder exhibiting good sinterability during an assembly process and during the fuel cell operation.

Abstract: A fuel cell is constructed as anode-supported solid oxide fuel cell, but can also be used with electrolyte- and metal-supported solid oxide fuel cells. The anode and electrolyte are larger than the cathode and the portion of the anode/electrolyte protruding beyond the cathode is provided with a peripheral seal. The anode-/electrolyte/cathode combination is provided with a flow/gas distribution grid on both the anode and the cathode side. The anode/cathode combination including the flow/gas distribution grids is enclosed between two separator plates, an auxiliary plate and a spacer. The auxiliary plate is designed for external feeding and discharge of a cathode gas, while the separator plate and the auxiliary plate are provided with openings for internal feeding/discharge of anode gas. The auxiliary plate and spacer are solder joined to the separator plate. Several fuel cells of the invention can be used to form a cell stack.

Abstract: The invention relates to a electrically conductive steel-ceramic connection comprising a steel interconnector and an electrically conductive ceramic joining layer arranged thereon. The interconnector comprises a ferritic steel containing Cr in a quantity ranging from 18 to 24% by weight. The ceramic layer contains perovskite of a formula Ln1-xSrxMn1-yCoyO3-? or Ln1-xSrxFe1-yCOyO3-?, wherein 0.1?x?0.4, 0.1?y?0.6, 0???x/2 and Ln=La—Lu. The inventive steel-ceramic connection is usable for a high-temperature fuel cell and regularly exhibits good adhesive properties and a low transition resistance (initial transition resistance R approximately equal to 0.01 ?cm2). Said steel-ceramic connection makes it possible to advantageously introduce a ferritic steel into high-temperature fuel cells. The inventive method for producing said steel-ceramic connection consists in pre-treating an inserted ceramic powder exhibiting good sinterability during an assembly process and during the fuel cell operation.

Abstract: Cathode-supported fuel cell wherein the cathode support comprises a porous part made of an alloy containing iron and chromium and more particularly stainless steel. The anode has a thickness of 1-50 ?m and preferably consists of nickel/nickel oxide. The cathode preferably consists of LSM material. Such an electrode-supported fuel cell can be produced by providing a metallic support containing at least iron or chromium by means of sintering, preferably starting form a powder, successively applying thereto an electrode, electrolyte and other electrodes. With this method a cathode is applied to the metallic support and the combination obtained is sintered at a temperature between 1000 and 1200° C.