Abstract: A single fuel cell includes: a power generation part where an anode, an electrolyte, and a cathode are stacked; a non-power generation part that does not include the power generation part; and a gas seal film for at least partially covering a surface of the non-power generation part. The gas seal film includes a first layer and a second layer laminated to each other. The first layer has lower electronic conductivity than the second layer, and the second layer has lower oxygen ion conductivity than the first layer.

Abstract: A single fuel cell according to the present disclosure includes a power generation section, a power non-generation section which does not include the power generation section, and an oxygen-ion-insulating gas seal film arranged so as to cover the surface of the power non-generation section, and the gas seal film is configured by a structure formed by firing a material containing MTiO3 (M: alkaline earth metal element) and metal oxide. The structure may include a first structure and a second structure which are different in composition, the first structure may include components derived from MTiO3 in larger amounts than the second structure, the second structure may include a metal element contained in the metal oxide in a larger amount than the first structure, and the area ratio of the second structure in the structure may be not less than 1% and not more than 50%.

Abstract: A heat insulation structure for a high-temperature reaction room includes a heat insulating body surrounding the reaction room. The heat insulating body contains a binder component including a metal element and is arranged so as to face an insulating film disposed on a cell stack. Transfer of metal ions originating in the metal element from the heat insulating body toward the insulating film is suppressed by a metal ion transfer suppression means.

Abstract: A carbon dioxide recovery system for collecting carbon dioxide from an exhaust gas generated in a facility including a combustion device includes: a first exhaust gas passage through which the exhaust gas containing carbon dioxide flows; a fuel cell including an anode, a cathode disposed on the first exhaust gas passage so that the exhaust gas from the first exhaust gas passage is supplied to the cathode, and an electrolyte transferring, from the cathode to the anode, a carbonate ion derived from carbon dioxide contained in the exhaust gas from the first exhaust gas passage; and a second exhaust gas passage diverging from the first exhaust gas passage upstream of the cathode so as to bypass the cathode. A part of the exhaust gas is introduced to the second exhaust gas passage.

Abstract: A single fuel cell according to the present disclosure includes a power generation section, a power non-generation section which does not include the power generation section, and an oxygen-ion-insulating gas seal film arranged so as to cover the surface of the power non-generation section, and the gas seal film is configured by a structure formed by firing a material containing MTiO3 (M: alkaline earth metal element) and metal oxide. The structure may include a first structure and a second structure which are different in composition, the first structure may include components derived from MTiO3 in larger amounts than the second structure, the second structure may include a metal element contained in the metal oxide in a larger amount than the first structure, and the area ratio of the second structure in the structure may be not less than 1% and not more than 50%.

Abstract: A plant includes a fuel supply line for supplying high-pressure fuel gas; and at least one expander disposed in the fuel supply line and configured to extract power from the high-pressure fuel gas by expanding the high-pressure fuel gas.

Abstract: A single fuel cell according to the present disclosure includes a power generation section, a power non-generation section which does not include the power generation section, and an oxygen-ion-insulating gas seal film arranged so as to cover the surface of the power non-generation section, and the gas seal film is configured by a structure formed by firing a material containing MTiO3 (M: alkaline earth metal element) and metal oxide. The structure may include a first structure and a second structure which are different in composition, the first structure may include components derived from MTiO3 in larger amounts than the second structure, the second structure may include a metal element contained in the metal oxide in a larger amount than the first structure, and the area ratio of the second structure in the structure may be not less than 1% and not more than 50%.

Abstract: A carbon dioxide recovery system for collecting carbon dioxide from an exhaust gas generated in a facility including a combustion device includes: a first exhaust gas passage through which the exhaust gas containing carbon dioxide flows; a fuel cell including an anode, a cathode disposed on the first exhaust gas passage so that the exhaust gas from the first exhaust gas passage is supplied to the cathode, and an electrolyte transferring, from the cathode to the anode, a carbonate ion derived from carbon dioxide contained in the exhaust gas from the first exhaust gas passage; and a second exhaust gas passage diverging from the first exhaust gas passage upstream of the cathode so as to bypass the cathode. A part of the exhaust gas is introduced to the second exhaust gas passage.

Abstract: A plant includes a fuel supply line for supplying high-pressure fuel gas; and at least one expander disposed in the fuel supply line and configured to extract power from the high-pressure fuel gas by expanding the high-pressure fuel gas.

Abstract: A single fuel cell according to the present disclosure includes a power generation section, a power non-generation section which does not include the power generation section, and an oxygen-ion-insulating gas seal film arranged so as to cover the surface of the power non-generation section, and the gas seal film is configured by a structure formed by firing a material containing MTiO3 (M: alkaline earth metal element) and metal oxide. The structure may include a first structure and a second structure which are different in composition, the first structure may include components derived from MTiO3 in larger amounts than the second structure, the second structure may include a metal element contained in the metal oxide in a larger amount than the first structure, and the area ratio of the second structure in the structure may be not less than 1% and not more than 50%.

Abstract: A cell stack includes a plurality of battery cell units, in which an anode, an electrolyte, an inter connector, and a cathode are stacked on a surface of a substrate tube of a cylinder, and a plurality of battery cells is formed in an axis direction of the substrate tube, and a connection mechanism that connects an end portion of the substrate tube of the battery cell unit in the axis direction, and an end portion of the adjacent battery cell unit. The connection mechanism includes a connection jig including a cylindrical portion facing a cylindrical shape of the battery cell unit, and a protruding portion formed on a surface of the cylindrical portion and having a protruding shape in a radial direction, and an adhesive layer applied between the cylindrical portion of the connection jig and the cell unit, and joining the connection jig and the cell unit.

Abstract: To provide a fuel cell generator capable of reducing or repairing damage damaged portions for itself and a method for operating the fuel cell generator. A fuel cell generator 1 of the present invention includes a fuel cell module 10 formed by disposing multiple power generation elements, in which fuel electrode, a solid electrolyte, and an air electrode are sequentially stacked together, at predetermined intervals, the multiple power generation elements being connected to each other through an interconnector, a fuel supply unit 12 that supplies fuel gas to the fuel electrode; an air supply unit 11 that supplies oxidizing gas to the air electrode; and a repairing particle supply unit 14 that supplies repairing particles 14a to the damaged portion in at least one of the interconnector and the solid electrolyte.

Abstract: A cell stack includes a plurality of battery cell units, in which an anode, an electrolyte, an inter connector, and a cathode are stacked on a surface of a substrate tube of a cylinder, and a plurality of battery cells is formed in an axis direction of the substrate tube, and a connection mechanism that connects an end portion of the substrate tube of the battery cell unit in the axis direction, and an end portion of the adjacent battery cell unit. The connection mechanism includes a connection jig including a cylindrical portion facing a cylindrical shape of the battery cell unit, and a protruding portion formed on a surface of the cylindrical portion and having a protruding shape in a radial direction, and an adhesive layer applied between the cylindrical portion of the connection jig and the cell unit, and joining the connection jig and the cell unit.

Abstract: Provided is a wind turbine generator that prevents an increase of weight of a wind turbine blade and a reduction in ventilation efficiency and that realizes good ventilation cooling of a rotor head with a simple structure. The wind turbine generator includes: a hollow interior space formed in a wind turbine blade; an exhaust path provided through a wind-turbine-blade forming member at a tip end of the wind turbine blade or in a vicinity of the tip end, so as to allow the interior space to communicate with an outside of the wind turbine blade; and an opening that allows the interior space to communicate with a rotor head main body. Ventilation cooling inside the rotor head main body is performed by using a pressure difference between the tip end of the wind turbine blade and the rotor head main body, produced by a rotation of the wind turbine blade.