Abstract: Disclosed is a system for producing hydrogen from a byproduct gas generated during a steelmaking process or a coal chemistry process, including a reformer for reforming the byproduct gas using steam (H2O), a separator for separating a reformed gas supplied from the reformer into a reduction gas and hydrogen gas (H2), a first reactor for reducing ferric oxide (Fe2O3) into ferrous oxide (FeO) using the reduction gas supplied from the separator, and a second reactor for producing ferrous-ferric oxide (Fe3O4) and hydrogen gas (H2) by mixing the ferrous oxide (FeO) supplied from the first reactor with steam (H2O), wherein the concentration of hydrogen gas (H2) in the reformed gas discharged from the reformer is higher than the concentration of hydrogen gas (H2) in the byproduct gas.

Abstract: Provided is a method for manufacturing a diesel autothermal reforming catalyst, which includes: a step of coating a catalyst material containing an organic solvent, a binder, a plasticizer and a catalyst powder on a monolithic support; and a step of heat-treating the catalyst material at 500-900° C.

Abstract: Provided is an autothermal reforming catalyst for a fuel cell, including: a monolithic catalyst; and a support formed on the monolithic catalyst, wherein the support is a metal foam, a metal mesh or a monolithic structure.

Abstract: Provided is a catalyst for preferential oxidation for fuel reforming which includes a ceria support containing gadolinium, and a metal catalyst supported on the ceria support.

Abstract: Provided is a flat tubular solid oxide fuel cell stack, and more particularly, a flat tubular solid oxide fuel cell stack in which a connection member is interposed between a plurality of fuel cells to smoothly supply air and increase a contact area, in order to enable a stable electrical contact.

Abstract: Provided is an autothermal reforming catalyst for a fuel cell, including: a monolithic catalyst; and a support formed on the monolithic catalyst, wherein the support is a metal foam, a metal mesh or a monolithic structure.

Abstract: Methods of sealing a bipolar plate supported solid oxide fuel cell with a sealed anode compartment are provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.

Abstract: Provided are a method for depositing a catalyst in a fuel cell, a fuel cell obtained by the method, and an apparatus for operating the fuel cell. The method for depositing a catalyst in a fuel cell includes: oxidizing a catalyst provided at the top of the cathode with air introduced to the cathode under the operating condition of the fuel cell; and depositing the oxidized catalyst gas at the reactive zone of the cathode. The method allows deposition of an activated catalyst ingredient at the cathode of a fuel cell by disposing a catalyst (such as Pt, Ag, Pd, Ru, etc.) highly reactive to reduction of oxygen at the side to which oxygen is introduced, and oxidizing and vaporizing the catalyst under an actual operating condition.

Abstract: Provided is a flat tubular solid oxide fuel cell stack, and more particularly, a flat tubular solid oxide fuel cell stack in which a connection member is interposed between a plurality of fuel cells to smoothly supply air and increase a contact area, in order to enable a stable electrical contact.

Abstract: Disclosed herein is a method of purging a fuel cell, by which water present in fuel cell stacks is discharged outside the fuel cell stacks together with gas by opening and closing a purge valve, including: conducting a short-period purge several times using the purge valve; and conducting a long-period purge once using the purge valve, wherein the short-period purge and the long-period purge are repeatedly conducted. The method of purging a fuel cell is advantageous in that the short-period purge is conducted several times using a purge valve and then the long-period purge is conducted once, and these short-period purges and the long-period purge are repeatedly conducted, so that the problems occurring when only a short-period purge or only a long-period purge is conducted can be solved, with the result that the efficiency and performance of the fuel cell are improved and the fuel cell can be stably operated.

Abstract: A dishwashing method of a dishwasher which includes a body, a dishwashing tub contained in the body, a steam generator received in the dishwashing tub to generate steam, a plurality of steam injection nozzles to inject the steam generated by the steam generator, a plurality of control valves to control flow of the steam into the respective steam injection nozzles, the method including injecting steam from a plurality of the steam injection nozzles comprising opening a plurality of the control valves, to maintain an injection pressure of the steam generated by the steam generator.

Abstract: The present invention relates to a method and apparatus for controlling power allocation of a fuel cell-battery hybrid system. A mode switching output value, which is a reference for switching of power supply status and power allocation, is set within a range below a maximum power value of a motor supplied with a constant voltage from the fuel cell and/or the battery. A requested output value is extracted in real time. The mode switching output value is compared with the requested output value. When the requested output value is less than the mode switching output value, a fuel cell converter is operated, and an operation of a battery converter is stopped. When the requested output value is equal to or greater than the mode switching output value, both the fuel cell converter and the battery converter are simultaneously operated in a predetermined output ratio.

Abstract: Methods of sealing a bipolar plate supported solid oxide fuel cell with a sealed anode compartment are provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.

Abstract: A bipolar plate supported solid oxide fuel cell with a sealed anode compartment is provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.

Abstract: A steam/water mixed dishwasher using steam and water together, and, more particularly, a dishwasher and dishwashing method of achieving improvement in washing performance and efficiency via direct steam injection to dishes. The dishwasher includes a body containing a dishwashing tub, at least one dish basket disposed in the dishwashing tub and adapted to receive dishes therein, a steam generator to generate steam by heating wash water, and steam injection nozzles to inject the steam generated from the steam generator. The steam injection nozzles are disposed at the same height as a lower surface of the dish basket. The dishwashing method includes injecting steam from a number of the plurality of steam injection nozzles by opening a number of the plurality of control valves, to thereby maintain an injection pressure of the steam generated from the steam generator.

Abstract: A bipolar plate supported solid oxide fuel cell with a sealed anode compartment is provided. The solid oxide fuel cell includes a cathode, an electrolyte, and an anode, which are supported on a metallic bipolar plate assembly including gas flow fields and the gas impermeable bipolar plate. The electrolyte and anode are sealed into an anode compartment with a metal perimeter seal. An improved method of sealing is provided by extending the metal seal around the entire perimeter of the cell between an electrolyte and the bipolar plate to form the anode compartment. During a single-step high temperature sintering process the metal seal bonds to the edges of the electrolyte and anode layers, the metal foam flow field and the bipolar plate to form a gastight containment.

Abstract: A monolithic catalyst with micro-scale flow channels and methods of making such a monolithic catalyst are provided. The monolithic catalyst includes a plurality of thin catalyst walls. The walls have a set thickness in a range from 1 to 150 &mgr;m. The thin catalyst walls define a plurality of flow channels. A fugitive material is used to form the flow channels. The flow channels have a set width in a range from 1 to 200 &mgr;m. The flow channels are formed by an organic fugitive material, which burns off during processing. By using the thin catalyst walls and flow channels having a set width in a range from 1 to 200 &mgr;m, a reduced diffusion path length that molecules travel between the bulk gas and the active site is provided. Accelerating the mass transport thus improves the overall reaction rate, which allows processing of more reactants. Thus, the volume of the required catalyst is reduced, allowing more compact reactors.

Abstract: A solid oxide fuel cell (SOFC) repeat unit includes an oxide electrolyte, an anode, a metallic fuel flow field, a metallic interconnect, and a metallic air flow field. The multilayer laminate is made by casting tapes of the different functional layers, laminating the tapes together and sintering the laminate in a reducing atmosphere. Solid oxide fuel cell stacks are made by applying a cathode layer, bonding the unit into a gas manifold plate, and then stacking the cells together. This process leads to superior mechanical properties in the SOFC due to the toughness of the supporting metallic layers. It also reduces contact resistances in stacking the cells since there is only one physical contact plane for each repeat unit.

Abstract: A monolithic catalyst with micro-scale flow channels and methods of making such a monolithic catalyst are provided. The monolithic catalyst includes a plurality of thin catalyst walls. The walls have a set thickness in a range from 1 to 150 &mgr;m. The thin catalyst walls define a plurality of flow channels. A fugitive material is used to form the flow channels. The flow channels have a set width in a range from 1 to 200 &mgr;m. A flexible strip that includes a layer of catalyst material and a fugitive layer forms the monolithic catalyst. This flexibility allows the strips to be formed into selected shapes as needed for a particular reactor design. For example, strips can be rolled into a spiral cylinder or folded into a planar stack. The flow channels are formed by an organic fugitive material, which burns off during processing.