Abstract: An object is to provide a liquid ejection head capable of efficiently dissipating heat generated at the time of liquid ejection. The liquid ejection head includes a storage portion storing liquid; an ejection portion provided with a nozzle to eject liquid and an element to generate energy to eject liquid from the nozzle; and a flow path portion having a flow path capable of supplying liquid from the storage portion to the ejection portion. In a second direction orthogonal to a first direction which is a direction of supply of liquid from the storage portion to the ejection portion, the flow path portion includes a narrow width portion smaller in width than the storage portion and the ejection portion.

Abstract: A seal material for an electrochemical reaction cell separates fuel gas and oxidizing gas in the electrochemical reaction cell. The seal material for an electrochemical reaction cell includes: a plurality of ceramic particles; and a hardener for hardening the plurality of ceramic particles, and has an apparent porosity of 10 to 25%.

Abstract: A fuel cell stack 101 includes a plurality of fuel cells 105 in which a fuel electrode 109, a solid oxide electrolyte 111, and an air electrode 113 are sequentially laminated, an interconnector 107 that electrically connects the fuel cells 105 which are adjacent to each other, and an interconnector connecting layer 108 that is interposed directly between the air electrode 113 and the interconnector 107. The interconnector connecting layer 108 is formed from a material, which is expressed by a composition formula of (La1-x-ySrxCay)zMnO3-AppmSiO2-DppmMgO (provided that, 0<x?0.4, 0<y?0.4, 0.1?x+y?0.5, 0.95?z<1, A: 10 to 300, D: 10 to 400), through firing.

Abstract: A method is provided for manufacturing a solid oxide fuel cell having excellent power generation performance and thermal cycle resistance and a solid oxide fuel cell. A method for manufacturing a solid oxide fuel cell includes a first step ST11 of sequentially forming a fuel electrode and a solid oxide electrolyte layer on a substrate; a second step ST12 of forming an air electrode intermediate layer on the solid oxide electrolyte layer; and a third step ST13 of forming, on the air electrode intermediate layer, an air electrode conductive layer using a mixture obtained by mixing first particles in a first average particle size range in which the average particle size (d50) is in a range of 27.0 ?m to 31.0 ?m and second particles in a second average particle size range having an average particle size (d50) smaller than the first average particle size range.

Abstract: A method is provided for manufacturing a solid oxide fuel cell having excellent power generation performance and thermal cycle resistance and a solid oxide fuel cell. A method for manufacturing a solid oxide fuel cell includes a first step ST11 of sequentially forming a fuel electrode and a solid oxide electrolyte layer on a substrate; a second step ST12 of forming an air electrode intermediate layer on the solid oxide electrolyte layer; and a third step ST13 of forming, on the air electrode intermediate layer, an air electrode conductive layer using a mixture obtained by mixing first particles in a first average particle size range in which the average particle size (d50) is in a range of 27.0 ?m to 31.0 ?m and second particles in a second average particle size range having an average particle size (d50) smaller than the first average particle size range.

Abstract: The invention provides a solid oxide fuel cell having a cathode which uses a material that exhibits minimal variation in the linear expansion coefficient and has superior conductivity and catalytic activity, and also provides a manufacturing method for the solid oxide fuel cell. The solid oxide fuel cell has single fuel cells comprising an anode, a solid electrolyte membrane and a cathode, wherein at least a portion of the cathode comprises a perovskite oxide represented by Lay(Ni1-xFex)O3 (wherein 0.1?x?0.5 and 0.95?y<1) as the main component.

Abstract: A fuel cell stack 101 includes a plurality of fuel cells 105 in which a fuel electrode 109, a solid oxide electrolyte 111, and an air electrode 113 are sequentially laminated, an interconnector 107 that electrically connects the fuel cells 105 which are adjacent to each other, and an interconnector connecting layer 108 that is interposed directly between the air electrode 113 and the interconnector 107. The interconnector connecting layer 108 is formed from a material, which is expressed by a composition formula of (La1-x-ySrxCay)zMnO3-AppmSiO2-DppmMgO (provided that, 0<x?0.4, 0<y?0.4, 0.1?x+y?0.5, 0.95?z<1, A: 10 to 300, D: 10 to 400), through firing.

Abstract: An interconnector material having a high degree of densification, a unit cell for a solid oxide fuel cell that has a high degree of gas tightness at the contact interface between the electrolyte and the interconnector, and a solid oxide fuel cell having superior reliability are provided in an inexpensive manner. A material for a solid oxide fuel cell interconnector, comprising (SrxE1-x)TiO3 (wherein x satisfies 0.01?x?0.5, and E represents one or more elements selected from the group consisting of La, Pr, Nd, Sm and Gd) and Al2O3, wherein the Al2O3 content relative to the (SrxE1-x)TiO3 is not less than 2 mol % and not more than 10 mol %.

Abstract: An interconnector material having a high degree of densification, a unit cell for a solid oxide fuel cell that has a high degree of gas tightness at the contact interface between the electrolyte and the interconnector, and a solid oxide fuel cell having superior reliability are provided in an inexpensive manner. A material for a solid oxide fuel cell interconnector, comprising (SrxE1-x)TiO3 (wherein x satisfies 0.01?x?0.5, and E represents one or more elements selected from the group consisting of La, Pr, Nd, Sm and Gd) and Al2O3, wherein the Al2O3 content relative to the (SrxE1-x)TiO3 is not less than 2 mol % and not more than 10 mol %.

Abstract: A power protection apparatus including: a switch unit connected in series in a power supply line from a power source to a DC regulator; a first short-circuit detector for detecting a short circuit based on an output voltage value of the DC regulator obtained by making the switch unit conductive for predetermined time and, after that, interrupting the switch unit; a second short-circuit detector for detecting a short circuit based on a value of current flowed in the switch unit when the switch unit is conductive; and a switch interrupting unit, when a short circuit is detected by the second short-circuit detector, for forcedly interrupting the switch unit regardless of a state of the switch unit controlled by the first short-circuit detector.

Abstract: A power protection apparatus including: a switch unit 4 connected in series in a power supply line from a power source 2 to a DC regulator 3; a first short-circuit detector 5 for detecting a short circuit based on an output voltage value of the DC regulator 3 obtained by making the switch unit 4 conductive for predetermined time and, after that, interrupting the switch unit 4; a second short-circuit detector 7 for detecting a short circuit based on a value of current flowed in the switch unit 4 when the switch unit 4 is conductive; and a switch interrupting unit 8, when a short circuit is detected by the second short-circuit detector 7, for forcedly interrupting the switch unit 4 regardless of a state of the switch unit 4 controlled by the first short-circuit detector 5.

Abstract: A light stability testing device for conducting an accurate light stability test that permits an accurate ultraviolet irradiation and an accurate visible light irradiation, the device comprising an optical sensor having a visible light measuring sensor (5) for measuring the dose of visible light, and a ultraviolet measuring sensor (6) for measuring the dose of ultraviolet ray, an optical system having a total light regulating means (331) for regulating the absolute quantity of light emitted from a light source and a ultraviolet ray regulating means (335) for regulating the dose of ultraviolet ray in light regulated by the total light regulating means, and a control unit for controlling a total light control unit that controls the total light regulating means (331) by a signal from a visible light measuring sensor (5), and the ultraviolet ray regulating means (335) by a signal from the ultraviolet measuring sensor (6).

Abstract: A sealing structure of a cell tube for a tubular type fuel cell has a sealed portion composed of a conductive lead film formed on a surface of a substrate tube, and an airtight film with high airtight properties formed on a surface of the lead film. The sealing structure also has an adhesion enhancing film provided on a surface of the airtight film, and a sealing member adhered to a surface of the adhesion enhancing film via an inorganic adhesive coated on the surface of the adhesion enhancing film. Thus, the sealability of the cell tube is increased, and the electrical characteristics of the fuel cell are improved.

Abstract: A full cell comprising a fuel electrode and an air electrode disposed on side surfaces of an electrolyte film is disclosed. The fuel electrode is supplied with a fuel gas, and the air electrode is supplied with air. The air electrode has a close-packed structure in which the ratio between the average particle size of coarse particles and the average particular size of fine particles is from 5/1 to 250/1. The resulting fuel cell is increased in conductivity.

Abstract: A material for a base tube of a fuel battery, comprising a mixture of at least two components selected from the group consisting CaO, ZrO2, NiO, MgO, SrO, Al2O3, TiO2, and BaO. Such material suppresses cracks of an electrolyte and also suppress leakage after rapid temperature increase and decrease, thus providing a reliable fuel battery.

Abstract: The present invention discloses a base tube for a fuel cell produced by forming a film of a fuel electrode and a film of an air electrode on a surface of the base tube, the base tube comprising a mixture of a raw material for the base tube, and coarse particles, whereby the mixture shrinks nonuniformly when sintered to increase the porosity of the base tube. Thus, the gas permeability and the cell electrical efficiency can be increased.

Abstract: The present invention discloses a base tube for a fuel cell produced by forming a film of a fuel electrode and a film of an air electrode on a surface of the base tube, the base tube comprising a mixture of a raw material for the base tube, and coarse particles of metal oxide, whereby the mixture shrinks nonuniformly when sintered to increase the porosity of the base tube. Thus, the gas permeability and the cell electrical efficiency can be increased.

Abstract: A material for a base tube of a fuel battery, comprising a mixture of at least two components selected from the group consisting CaO , ZrO2, NiO, MgO, SrO, Al2O3, TiO2, and BaO. Such material suppresses cracks of an electrolyte and also suppress leakage after rapid temperature increase and decrease, thus providing a reliable fuel battery.

Abstract: A sensor such as for sensing dissolved oxygen in plural cells spaced apart from each other by a predetermined distance includes projection sections provided at intervals spaced according to the predetermined distance on an edge section of a plate shape base body. At least an active electrode and a counter-electrode are at predetermined positions on each projection section, and lead-out terminals are provided at predetermined positions on the substrate facing the substrate portion where the projection sections are formed. The substrate has wiring electrically connecting both the active electrodes and the counter-electrode to the lead-out terminals. This arrangement greatly reduces measurement labor and variance in measurement data results. In addition, it increases the number of objects that can be measured during a measurement operation.

Abstract: A material for a base tube of a fuel battery, comprising a mixture of at least two components selected from the group consisting CaO , ZrO2, NiO, MgO, SrO, Al2O3, TiO2, and BaO. Such material suppresses cracks of an electrolyte and also suppress leakage after rapid temperature increase and decrease, thus providing a reliable fuel battery.