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: One object of the present invention is to provide a paste that is easily coated, has a comparatively long aging time and is able to maintain the shape of the ribs following plastic deformation; in order to achieve the object, the present invention provides a paste comprising 50-95% by weight of glass powder or glass-ceramic mixed powder, 0.1-15% by weight of a resin, and 3-60% by weight of a plurality of kinds of solvents, wherein each boiling point of the plurality of kinds of solvents differs by 30° C. or more; and, the plurality of kinds of solvents contain one or more low boiling point solvents which are low boiling point solvents having a boiling point from 100° C. to 180° C., and one or more high boiling point solvents which are high boiling point solvents having a boiling point from 190° C. to 450° C.

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≦d≦0.5, 0≦f≦0.15, 0.15<g≦0.

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.