Abstract: Provided is a power generation cell for a solid electrolyte fuel cell using a lanthanum gallate solid electrolyte as a solid electrolyte, particularly a structure of a fuel electrode of the power generation cell for the solid electrolyte fuel cell. The fuel electrode is of a power generation cell for a solid electrolyte fuel cell in which particles (2) of a B-doped ceria (wherein, B represents one or two or more of Sm, La, Gd, Y and Ca) are attached to the surface of the framework of porous nickel having a framework structure in which a network is formed by mutual sintering of nickel particles (1). The ceria particles (2) are distributed with the highest density and attached around the framework structure portions (3) the sectional areas of which are made small by the mutual sintering of the nickel particles (1) to be bonded to each other.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators outside the fuel electrode current collector and the air electrode current collector. A fuel gas and an oxidant gas are supplied from the separators to the fuel electrode layers and the oxidant electrode layers, respectively, through the fuel electrode current collectors and the air electrode current collectors, respectively. Alternatively, indents are provided on the surface of each of the separators, which surface is in contact with one of the current collectors, to increase the dwell volume and hence the retaining time of the gas in the interior of the current collectors.

Abstract: A solid electrolyte fuel cell having a long service life includes a power generating cell having a fuel electrode laminated on one surface of a solid electrolyte and an air electrode laminated on the other surface, an air electrode current collector laminated in contact with the air electrode of the power generating cell and formed of a porous silver material or a silver-coated porous metal material, a fuel electrode current collector laminated in contact with the fuel electrode of the power generating cell, an air electrode-side separator having a silver-plated layer formed on its surface on the side contacting the fuel electrode current collector, a fuel electrode-side separator laminated in contact with the fuel electrode current collector, and air supply passage provided by being connected with the air electrode-side separator and a fuel supply passage provided by being connected with the fuel electrode-side separator, wherein a silver vapor supply unit is provided in the air supply passage to thereby sup

Abstract: A flat plate laminated type high-temperature fuel cell, with internal manifold structure, has a laminated body constructed by alternately laminating power generation cells (5) and separators (8), and by applying a load to the laminated body in the laminating direction to compress elements of the laminated body. Each separator (8) has a connecting section (8b) for connecting a manifold section (8a) of the separator (8) and a section (8c) at which the power generation cell (5) is located, and the connecting section (8b) has flexibility to the load. Thus, it is possible to improve adhesiveness in the power generating section of the fuel cell stack and gas seal performance in the manifold section. Further, each of separators (108) has through-holes (122) extending in the laminating direction, and a fixing rod (123) is inserted into each of the through-holes (122) for restricting movements of the separators (108) in a plane direction due to thermal strain in operation.

Abstract: A solid electrolyte fuel cell having a long service life, comprising a power generating cell (4) having a fuel electrode (3) laminated on one surface of a solid electrolyte (1) and an air electrode (2) laminated on the other surface, an air electrode current collector (5) laminated in contact with the air electrode (2) of the power generating cell (4) and formed of a porous silver material or a silver-coated porous metal material, a fuel electrode current collector (6) laminated in contact with the fuel electrode (3) of the power generating cell (4), an air electrode-side separator (7) having a silver-plated layer (9) formed on its surface on the side contacting the fuel electrode current collector (5), a fuel electrode-side separator (8) laminated in contact with the fuel electrode current collector, and air supply passage (11) provided by being connected with the air electrode-side separator (7) and a fuel supply passage (10) provided by being connected with the fuel electrode-side separator (8), wherein a

Abstract: Gas discharge ports are provided in almost the entire area of a layer surface of a separator, and a gas for reaction is discharged like a shower from the separator toward a power generation cell. The separator is constructed by layering plate-shaped members containing iron-base alloy, nickel-base alloy, or chrome-base alloy as the base material. Silver, silver alloy, copper, or copper alloy is plated on both sides or one side of the base material of the plate-shaped member. The construction above can increase durability of a separator and enables the separator and a solid oxide fuel cell to be stably used for a long period.

Abstract: Gas discharge ports are provided in almost the entire area of a layer surface of a separator, and a gas for reaction is discharged like a shower from the separator toward a power generation cell. The separator is constructed by layering plate-shaped members containing iron-base alloy, nickel-base alloy, or chrome-base alloy as the base material. Silver, silver alloy, copper, or copper alloy is plated on both sides or one side of the base material of the plate-shaped member. The construction above can increase durability of a separator and enables the separator and a solid oxide fuel cell to be stably used for a long period.

Abstract: The present invention provides a power generation cell for a solid electrolyte fuel cell using a lanthanum gallate solid electrolyte as a solid electrolyte, particularly a structure of a fuel electrode of the power generation cell for the solid electrolyte fuel cell. The fuel electrode according to the first aspect of the present invention is a fuel electrode of a power generation cell for a solid electrolyte fuel cell in which particles (2) of a B-doped ceria (herein, B represents one or two or more of Sm, La, Gd, Y and Ca) are attached to the surface of the framework of porous nickel having a framework structure in which a network is formed by mutual sintering of nickel particles (1). The ceria particles (2) are distributed with the highest density and attached around the framework structure portions (3) the sectional areas of which are made small by the mutual sintering of the nickel particles (1) to be bonded to each other.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators (8) outside the fuel electrode current collector and the air electrode current collector. In the first embodiment, a fuel gas and an oxidant gas are supplied from the separators (8) to the fuel electrode layers and the oxidant electrode layers, respectively, through the fuel electrode current collectors and the air electrode current collectors, respectively. Each separator (8) is formed by laminating a plurality of thin metal plates at least including a thin metal plate (21) in which a first gas discharge opening (25) is arranged in the central part and second gas discharge openings (24) are circularly arranged in the peripheral part, and a thin metal plate (22) with an indented surface.

Abstract: Provided is a power generation cell for a solid electrolyte fuel cell, in which a lanthanum gallate-based electrolyte is used as a solid electrolyte. Use of alternative energy for replacing petroleum can be promoted and it is possible to use waste heat using the solid electrolyte fuel cell, thus the solid electrolyte fuel cell is watched in views of resource nursing and the environment. The power generation cell is typically operated at 800 to 1000° C. However, currently, the power generation cell, which is operated at 600 to 800° C. by using the lanthanum gallate-based electrolyte, is suggested. Since a current power generation cell has a large size and has an insufficient output, there are demands for size reduction and high output. In the power generation cell, Sm-doped ceria particles are separately attached to a surface of porous nickel having a network frame structure. The demands are satisfied by using the anode.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators outside the fuel electrode current collector and the air electrode current collector. In a first embodiment, a fuel gas and an oxidant gas are supplied from the separators to the fuel electrode layer and the oxidant electrode layer, respectively, through the fuel electrode current collector and the air electrode current collector, respectively. Each separator is formed by laminating a plurality of thin metal plates at least including a thin metal plate in which a first gas discharge opening is arranged in a central part and second gas discharge openings are circularly arranged in a peripheral part, and a thin metal plate with an indented surface.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators outside the fuel electrode current collector and the air electrode current collector. In a first embodiment, a fuel gas and an oxidant gas are supplied from the separators to the fuel electrode layer and the oxidant electrode layer, respectively, through the fuel electrode current collector and the air electrode current collector, respectively. Each separator is formed by laminating a plurality of thin metal plates at least including a thin metal plate in which a first gas discharge opening is arranged in a central part and second gas discharge openings are circularly arranged in a peripheral part, and a thin metal plate with an indented surface.

Abstract: Gas discharge ports are provided in almost the entire area of a layer surface of a separator, and a gas for reaction is discharged like a shower from the separator toward a power generation cell. The separator is constructed by layering plate-shaped members containing iron-base alloy, nickel-base alloy, or chrome-base alloy as the base material. Silver, silver alloy, copper, or copper alloy is plated on both sides or one side of the base material of the plate-shaped member. The construction above can increase durability of a separator and enables the separator and a solid oxide fuel cell to be stably used for a long period.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators outside the fuel electrode current collector and the air electrode current collector. In a first embodiment, a fuel gas and an oxidant gas are supplied from the separators to the fuel electrode layer and the oxidant electrode layer, respectively, through the fuel electrode current collector and the air electrode current collector, respectively. Each separator is formed by laminating a plurality of thin metal plates at least including a thin metal plate in which a first gas discharge opening is arranged in a central part and second gas discharge openings are circularly arranged in a peripheral part, and a thin metal plate with an indented surface.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators outside the fuel electrode current collector and the air electrode current collector. In a first embodiment, a fuel gas and an oxidant gas are supplied from the separators to the fuel electrode layer and the oxidant electrode layer, respectively, through the fuel electrode current collector and the air electrode current collector, respectively. Each separator is formed by laminating a plurality of thin metal plates at least including a thin metal plate in which a first gas discharge opening is arranged in a central part and second gas discharge openings are circularly arranged in a peripheral part, and a thin metal plate with an indented surface.

Abstract: An object of the present invention is to provide a solid oxide fuel cell assembled with an internal reforming mechanism stable and efficient over a long period. To achieve the object, in the present invention, a fuel-electrode layer 3 and an air-electrode layer 4 are disposed on both surfaces of a solid electrolyte layer 2; a fuel-electrode-side porous metal 6 and an air-electrode-side porous metal 7 are disposed on the outer surfaces of the fuel-electrode layer 3 and the air-electrode layer 4, respectively; and a separator 8 is disposed on each of the outer surfaces of the fuel-electrode-side porous metal 6 and the air-electrode-side porous metal 7. Then, the solid oxide fuel cell is constructed by closely adhering them all. The pores 6a in the fuel-electrode-side porous metal 6 is partially or fully filled with a hydrocarbon reforming catalyst 10, and reforming reaction is driven by the reforming catalyst 10 before a fuel gas reaches the fuel-electrode layer 3.

Abstract: A solid oxide fuel cell is formed by arranging a fuel electrode layer and an air electrode layer on both surfaces of a solid electrolyte, respectively, a fuel electrode current collector and an air electrode current collector outside the fuel electrode layer and the air electrode layer, respectively, and separators (8) outside the fuel electrode current collector and the air electrode current collector. In the first embodiment, a fuel gas and an oxidant gas are supplied from the separators (8) to the fuel electrode layers and the oxidant electrode layers, respectively, through the fuel electrode current collectors and the air electrode current collectors, respectively. Each separator (8) is formed by laminating a plurality of thin metal plates at least including a thin metal plate (21) in which a first gas discharge opening (25) is arranged in the central part and second gas discharge openings (24) are circularly arranged in the peripheral part, and a thin metal plate (22) with an indented surface.

Abstract: An electrode of a solid oxide fuel cell has a skeleton (11) constituted of a porous sintered compact having a three dimensional network structure, the porous sintered compact being made of an oxide ion conducting material and/or a mixed oxide ion conducting material; grains (12) made of an electron conducting material and/or a mixed oxide ion conducting material are adhered onto the surface of the skeleton; and the grains are baked inside the voids (13) of the porous sintered compact under the conditions such that the grains are filled inside the voids. The electrode drastically improves the electrode properties and alleviates the thermal shock and the thermal strain to a great extent. It is preferable that the electrode is used in the form such that the electrode is formed to be integrated with the electrolyte on one surface or on both surfaces of an oxide ion conducting, dense solid electrolyte layer.

Abstract: A solid oxide fuel cell and method of making same is disclosed. An electrolyte layer of an oxide ion conductor material that may be specified by La1−aAaGa1−(b+c)BbCocO3 and an air electrode layer of an electron conductor material that may be specified by La1−dAdCoO3 are laminated, preferably with an intermediate layer of an electron and ion mixed conductor material that may be specified by La1−eAeGa1−(f+g)BfCogO3 interposed therebetween. The laminate may be sintered to integrate the layers, and may then subjected to a heat treatment to cause elements to diffuse through an interface between adjoining layers. The composition in each interface is thus continuously changed. Here, A may be at least one element selected from the group consisting of Sr and Ca, B may be at least one element selected from the group consisting of Mg, Al, and In, and 0.05≦a≦0.3, 0≦b, e≦0.3, 0≦c≦0.15, b+c≦0.3, 0≦d≦0.5, 0≦f≦0.15, 0.15<g≦0.

Abstract: A method for producing a setter for defatting and/or firing, which can produce the setter without using any mold, and which can minimize generation of gas in the firing step of a process for producing the setter. The method enables setting of porosity of the setter to be relatively easily changed, and ensures a predetermined mechanical strength even with the porosity increased over 50%. The setter for defatting and/or firing has pores with an average diameter of 5-1000 &mgr;m and porosity in the range of 70-25%. The setter is formed of a porous body having a three-dimensional network structure having a flat surface. A porous sheet is preferably laminated on the surface of the porous body having a three-dimensional network structure, the porous sheet having pores, smaller than the pores of the structure body, with an average diameter of not more than 50 &mgr;m and having porosity in the range of 70-25%.