Abstract: A cell for water electrolysis/fuel cell power generation which includes a flow path configured to supply or discharge water in a first direction substantially perpendicular to a stacking direction of the cell; an oxygen-containing gas flow path configured to discharge or supply an oxygen-containing gas in a second direction substantially perpendicular to the stacking direction of the cell; and a hydrogen-containing gas flow path configured to discharge or supply the hydrogen-containing gas in a third direction substantially perpendicular to the stacking direction of the cell. Each of the oxygen-side electrode layer and the hydrogen-side electrode layer is an electrode layer having water repellency.

Abstract: An object is to provide a methane synthesis device having as a whole a reduced size and a simplified configuration. A methane synthesis device 100 is composed of respective components from an end plate 2 at the leftmost side to an end plate 23 at the rightmost side and is compactly assembled by fastening plural bolts and nuts to bring these individual components into tightly contact with each other. The components may be divided into a Sabatier reaction unit of signs 3 to 9, a water electrolysis unit of signs 13 to 19, and other components. Hydrogen gas generated in the water electrolysis unit is mixed with carbon dioxide gas and supplied to the Sabatier reaction unit, and methane is synthesized in the Sabatier reaction unit. The size of the device is reduced as a whole and configuration is simplified by integrally stacking the water electrolysis unit, the Sabatier reaction unit, a carbon dioxide supplying unit, and a hydrogen gas supplying unit.

Abstract: A hydrogen-oxygen generation system includes an electrolytic cell configured to generate hydrogen and oxygen by electrolyzing water, and discharge the hydrogen and the oxygen as separate generated gasses. An accumulator includes a water storage chamber configured to store the water, and a gas chamber configured to receive a pressurized gas, and the water storage chamber and the gas chamber are separated from each other by an elastic body membrane. The accumulator is configured to transfer the water stored in the water storage chamber toward the electrolytic cell at a transfer pressure in accordance with a pressure of the pressurized gas in the gas chamber. A water supply unit is configured to supply the water to the water storage chamber, and a gas supply unit is configured to supply the pressurized gas to the gas chamber.

Abstract: An object is to provide a methane synthesis device having as a whole a reduced size and a simplified configuration. A methane synthesis device 100 is composed of respective components from an end plate 2 at the leftmost side to an end plate 23 at the rightmost side and is compactly assembled by fastening plural bolts and nuts to bring these individual components into tightly contact with each other. The components may be divided into a Sabatier reaction unit of signs 3 to 9, a water electrolysis unit of signs 13 to 19, and other components. Hydrogen gas generated in the water electrolysis unit is mixed with carbon dioxide gas and supplied to the Sabatier reaction unit, and methane is synthesized in the Sabatier reaction unit. The size of the device is reduced as a whole and configuration is simplified by integrally stacking the water electrolysis unit, the Sabatier reaction unit, a carbon dioxide supplying unit, and a hydrogen gas supplying unit.

Abstract: An object is to provide a methane synthesis device having as a whole a reduced size and a simplified configuration. A methane synthesis device 100 is composed of respective components from an end plate 2 at the leftmost side to an end plate 23 at the rightmost side and is compactly assembled by fastening plural bolts and nuts to bring these individual components into tightly contact with each other. The components may be divided into a Sabatier reaction unit of signs 3 to 9, a water electrolysis unit of signs 13 to 19, and other components. Hydrogen gas generated in the water electrolysis unit is mixed with carbon dioxide gas and supplied to the Sabatier reaction unit, and methane is synthesized in the Sabatier reaction unit. The size of the device is reduced as a whole and configuration is simplified by integrally stacking the water electrolysis unit, the Sabatier reaction unit, a carbon dioxide supplying unit, and a hydrogen gas supplying unit.

Abstract: A hydrogen-oxygen generation system includes an electrolytic cell configured to generate hydrogen and oxygen by electrolyzing supplied water, and to discharge the generated hydrogen and oxygen as separate generated gasses. An accumulator includes a water storage chamber in which water is stored, and a gas chamber to which pressurized gas is supplied, and the water storage chamber and the gas chamber are separated from each other by an elastic body membrane. The accumulator is configured to transfer water stored in the water storage chamber toward the electrolytic cell at a transfer pressure in accordance with the pressure of the pressurized gas in the gas chamber. A water supply unit is configured to supply water to the water storage chamber, and a gas supply unit is configured to supply the pressurized gas to the gas chamber.

Abstract: An object is to provide a methane synthesis device having as a whole a reduced size and a simplified configuration. A methane synthesis device 100 is composed of respective components from an end plate 2 at the leftmost side to an end plate 23 at the rightmost side and is compactly assembled by fastening plural bolts and nuts to bring these individual components into tightly contact with each other. The components may be divided into a Sabatier reaction unit of signs 3 to 9, a water electrolysis unit of signs 13 to 19, and other components. Hydrogen gas generated in the water electrolysis unit is mixed with carbon dioxide gas and supplied to the Sabatier reaction unit, and methane is synthesized in the Sabatier reaction unit. The size of the device is reduced as a whole and configuration is simplified by integrally stacking the water electrolysis unit, the Sabatier reaction unit, a carbon dioxide supplying unit, and a hydrogen gas supplying unit.

Abstract: A proton conductor is a proton conductor represented by a composition formula of BaZr1?x?yYxInyO3, and x and y in the composition formula satisfy 0<y?0.013 and 0<x+y<0.5. A small amount of In is added to the composition in a predetermined range, whereby a resistance of the crystal grain boundary of the proton conductor can be decreased so as to compensate for or even exceed the increase in resistance in the crystal gains of the proton conductor caused by the addition of In, and as a result, the entire resistance can be decreased.

Abstract: A cell for water electrolysis/fuel cell power generation which includes a flow path configured to supply or discharge water in a first direction substantially perpendicular to a stacking direction of the cell; an oxygen-containing gas flow path configured to discharge or supply an oxygen-containing gas in a second direction substantially perpendicular to the stacking direction of the cell; and a hydrogen-containing gas flow path configured to discharge or supply the hydrogen-containing gas in a third direction substantially perpendicular to the stacking direction of the cell. Each of the oxygen-side electrode layer and the hydrogen-side electrode layer is an electrode layer having water repellency.

Abstract: A proton conductor is a proton conductor represented by a composition formula of BaZr1-x-yYxInyO3, and x and y in the composition formula satisfy 0<y?0.013 and 0<x+y<0.5.

Abstract: A proton conductive electrolyte (20) is made of AB(1-x)MxO3 structure perovskite, and is characterized in that: the B is Ce; the M is a metal having valence that is smaller than +4; and an average of an ion radius of the M is less than an ion radius of Tm3+ and more than 56.4 pm.

Abstract: A proton conductor includes a main constituent element. A part of the main constituent element is substituted by a transition metal. Valence of the transition metal is variable between valence of the main constituent element and valence lower than the valence of the main constituent element.

Abstract: An electrochemical cell including a proton conductor as an electrolyte with superior stability, particularly against gases containing carbon dioxide, is provided. A proton-conductive electrolyte 21 used for an electrochemical cell 20B was a ceramic having the composition SrZr0.5Ce0.4Y0.1O3??. As the cathode, a thin film of a proton conductor having the composition SrCe0.95Yb0.05O3??was provided on the electrolyte 21 as an intermediate layer 22, and a porous platinum electrode 23c was provided thereon. The anode used was a palladium electrode 23a. A cell 20A including no intermediate layer 22 had a high overvoltage approaching 600 mV at a low current density, namely, 70 mA/cm2. In contrast, the cell 20B, including the intermediate layer 21, had a low overvoltage, namely, about 170 mV, at a current density of 680 mA/cm2.

Abstract: A proton conductive electrolyte (20) is made of AB(1?x)MxO3 structure perovskite, and is characterized in that: the B is Ce; the M is a metal having valence that is smaller than +4; and an average of an ion radius of the M is less than an ion radius of Tm3+ and more than 56.4 pm.

Abstract: A proton conducting electrolyte having good proton conductivity and an electrochemical cell that includes the proton conducting electrolyte are provided. The proton conducting electrolyte has the ABO3 type perovskite structure, and a Site-B contains a first metal having a valence that is smaller than the average valence of the Site-B, and a second metal element having a valence that is larger than the average valence of the Site-B by at least one. Holes are formed in the proton conducting electrolyte. Thus, good proton conductivity is imparted to the proton conducting electrolyte.

Abstract: To provide low-overpotential electrodes for an electrochemical cell including a proton-conductive electrolyte and an electrochemical cell including the electrodes. The following reaction occurs at the interface between a gas phase and an anode 3: H2?2H++2e? At this time, the resultant protons (H+) and electrons (e?) exist in the anode 3. The subsequent electrode reaction is completed after the protons travel to an electrolyte 2 and the electrons travel to a lead 5. The reverse reaction occurs at a cathode 4 to generate hydrogen gas.

Abstract: A mixed proton-electron conducting ceramic is a metallic oxide having a perovskite type structure, includes at least one member selected from the group consisting of chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni) and ruthenium (Ru) in a range of from 0.01 or more to 0.8 or less when a molar-ratio sum of metals constituting the metallic oxide is taken as 2, and has proton conductivity and electron conductivity.

Abstract: A gas reactor includes a dielectric casing made of a dielectric material and forming a first conduit for directing first gas in one direction, a first electrode positioned inside the dielectric casing along a general center thereof and extending in the direction, at least one catalyst layer formed on a surface of the first electrode, and a second electrode surrounding an outer wall of the dielectric casing. The gas reactor further includes a power-supply unit applying AC power between the first electrode and the second electrode to generate glow discharge inside the dielectric casing.

Abstract: To provide a pre-heating apparatus capable of improving the installation reliability of a raw material holding gate of a pre-heating apparatus, reducing an installation cost and reducing melting electric power energy without deteriorating an operation environment while improving the pre-heating effect on raw materials by an exhaust gas, a shaft equipped with a raw material charging portion and an exhaust gas outlet at the top thereof and with a raw material holding gate at the bottom thereof is disposed in the proximity of an arc furnace, a gap is defined between the lower end portion of the shaft and the holding gate, and an outer cylinder connecting with an exhaust gas duct of the arc furnace is disposed around the outer periphery of the gap.

Abstract: In a scrap conveyor for feeding a scrap to a processing furnace such as an arc furnace, etc, while pre-heating the scrap by an exhaust gas from the processing furnace, the periphery of the scrap conveyor is covered with a gas seal cover, a flue is disposed above the scrap conveyed, an exhaust gas passage portion is disposed below the scrap conveyor, and an exhaust gas suction duct opening to the exhaust gas passage portion through an exhaust gas suction space is disposed. In the conveyor, an exhaust gas flow passage for allowing the exhaust gas inside the flue to pass through the scrap from its surface layer to its lower layer is formed inside the layer of the scrap, so that pre-heating of the scrap can be efficiently effected throughout the whole layer of the scrap.