Abstract: A fuel cell system includes: an oxygen concentration module to produce oxygen-enriched air by separating nitrogen from air, and a first air supply line connected to the oxygen concentration module to supply air to the oxygen concentration module. The fuel cell system further includes: a heating unit provided in the first air supply line to selectively heat air by using waste heat discharged from an external heat source provided outside a fuel cell stack, a second air supply line connected to the oxygen concentration module and configured to supply air to the oxygen concentration module independently of the first air supply line, a cooling unit provided in the second air supply line and configured to selectively cool air by using outside cold energy, and a stack connection line which connects the oxygen concentration module and the fuel cell stack and supplies the oxygen-enriched air to the fuel cell stack.

Abstract: An oxygen supply apparatus and method for a fuel cell of an aircraft are provided. The oxygen supply apparatus includes a compressor that generates compressed air by compressing air in the atmosphere and supplies the compressed air to a fuel cell stack, an oxygen tank having a predetermined amount of oxygen stored therein. An aircraft monitoring device monitors the aircraft and determines whether oxygen supply from the oxygen tank is required, and an oxygen supply means switching device switches an oxygen supply means for the fuel cell stack from the compressor to the oxygen tank, or vice versa depending on an outcome of the monitoring.

Abstract: Disclosed are a fuel cell power net system and a method for controlling the same. The fuel cell power net system includes: a fuel cell controller configured to control current output from a fuel cell unit; at least one DC/DC converter configured to boost DC voltage and to output the boosted DC voltage; a battery connected to the fuel cell unit in parallel so as to supply DC power to the fuel cell unit; a load controller configured to provide demand output information; and a fuel cell power controller configured to receive the demand output information, to calculate output levels required by the fuel cell unit and the battery, to compare a current output level of the fuel cell unit with the output level required by the fuel cell unit, and to provide a control value to the fuel cell controller depending on a result of the comparison.

Abstract: There may be provided a fuel cell stack unit comprising: a first gas separating plate; a first sealing gasket; a metal support, an end cell, and an air inlet being formed in the outer peripheral side of the center portion; a second sealing gasket; and a second gas separating plate stacked on the lower side of the second sealing gasket, wherein air introduced from the air inlet of the first gas separating plate successively passes through the air inlets formed in the first sealing gasket, the metal support, and the second sealing gasket, respectively, and flows from one side of the end cell to the other side thereof along a stacking boundary between the lower side of the end cell and the upper side of the second gas separating plate; and the second sealing gasket is recessed inward from an edge of the second sealing gasket.

Abstract: An oxygen supply apparatus and method for a fuel cell of an aircraft are provided. The oxygen supply apparatus includes a compressor that generates compressed air by compressing air in the atmosphere and supplies the compressed air to a fuel cell stack, an oxygen tank having a predetermined amount of oxygen stored therein. An aircraft monitoring device monitors the aircraft and determines whether oxygen supply from the oxygen tank is required, and an oxygen supply means switching device switches an oxygen supply means for the fuel cell stack from the compressor to the oxygen tank, or vice versa depending on an outcome of the monitoring.

Abstract: A method and a system for verifying normal operation of a negative pressure sensor of a brake booster is provided. The method and system verify whether the negative pressure sensor of the brake booster is in normal operation and the normal operation of the booster negative pressure sensor is detected by mutually verifying values measured by the booster negative pressure sensor and values measured by sensors that indirectly sense the booster negative pressure.

Abstract: A method and a system for verifying normal operation of a negative pressure sensor of a brake booster is provided. The method and system verify whether the negative pressure sensor of the brake booster is in normal operation and the normal operation of the booster negative pressure sensor is detected by mutually verifying values measured by the booster negative pressure sensor and values measured by sensors that indirectly sense the booster negative pressure.

Abstract: There may be provided a fuel cell stack unit comprising: a first gas separating plate; a first sealing gasket; a metal support, an end cell, and an air inlet being formed in the outer peripheral side of the center portion; a second sealing gasket; and a second gas separating plate stacked on the lower side of the second sealing gasket, wherein air introduced from the air inlet of the first gas separating plate successively passes through the air inlets formed in the first sealing gasket, the metal support, and the second sealing gasket, respectively, and flows from one side of the end cell to the other side thereof along a stacking boundary between the lower side of the end cell and the upper side of the second gas separating plate; and the second sealing gasket is recessed inward from an edge of the second sealing gasket.

Abstract: Provided is a gas heating unit for a fuel cell. The gas heating unit includes a supply gas inlet for receiving a supply gas before pre-heating, a plurality of pre-heating plates having openings and configured to pre-heat the supply gas, a plurality of support plates supporting the pre-heating plates and having openings, and a supply gas outlet for supplying the pre-heated supply gas to a fuel cell stack module. The pre-heating plates and the support plates are alternately stacked, and the openings of the pre-heating plates and the openings of the support plates provide a path to the supply gas.

Abstract: In one embodiment, a membrane of proton-electron conducting ceramics that is useful for the conversion of a hydrocarbon and steam to hydrogen has a porous support coated with a film of a Perovskite-type oxide. By including the Zr and M in the oxide in place of Ce, the stability can be improved while maintaining sufficient hydrogen flux for efficient generation of hydrogen. In this manner, the conversion can be carried out by performing steam methane reforming (SMR) and/or water-gas shift reactions (WGS) at high temperature, where the conversion of CO to CO2 and H2 is driven by the removal of H2 to give high conversions.

Abstract: Novel anode materials including various compositions of vanadium-doped strontium titanate (SVT), and various compositions of vanadium- and sodium-doped strontium niobate (SNNV) for low- or intermediate-temperature solid oxide fuel cell (SOFCs). These materials offer high conductivity achievable at intermediate and low temperatures and can be used as the structural support of the SOFC anode and/or as the conductive phase of an anode. A method of making a low- or intermediate-temperature SOFC having an anode layer including SVT or SNNV is also provided.

Abstract: A structure for measuring iron loss of a motor stator core is provided. The structure includes an auxiliary core whose both end surfaces in a longitudinal direction come in contact with inner end surfaces of two adjacent stator teeth among a plurality of stator teeth in a radial direction in order to measure iron loss of a stator core in which a plurality of slots and the plurality of stator teeth are alternately formed on an inner circumferential surface of a stator yoke in a circumferential direction. A pair of excitation windings is provided at portions of the auxiliary core in the longitudinal direction spaced-apart from each other. A B-coil that is a sensor coil is provided at the auxiliary core so as to be positioned inside any one excitation winding of the pair of excitation windings.

Abstract: A composite anode for a solid oxide fuel cell (SOFC), comprising an anode support layer (ASL) of Ni—YSZ and an anode functional layer (AFL) of Ni—GDC, displays enhanced mechanical stability and similar or improved electrical efficiency to that of a Ni—GDC ASL for otherwise identical SOFCs. A SOFC employing the composite anode can be used for power generation at temperatures below 700° C., where the composite anode may include a second AFL of GDC disposed between the Ni—GDC layer and a GDC electrolyte.

Abstract: A structure for measuring iron loss of a motor stator core is provided. The structure includes an auxiliary core whose both end surfaces in a longitudinal direction come in contact with inner end surfaces of two adjacent stator teeth among a plurality of stator teeth in a radial direction in order to measure iron loss of a stator core in which a plurality of slots and the plurality of stator teeth are alternately formed on an inner circumferential surface of a stator yoke in a circumferential direction. A pair of excitation windings is provided at portions of the auxiliary core in the longitudinal direction spaced-apart from each other. A B-coil that is a sensor coil is provided at the auxiliary core so as to be positioned inside any one excitation winding of the pair of excitation windings.

Abstract: In one embodiment, a membrane of proton-electron conducting ceramics that is useful for the conversion of a hydrocarbon and steam to hydrogen has a porous support coated with a film of a Perovskite-type oxide. By including the Zr and M in the oxide in place of Ce, the stability can be improved while maintaining sufficient hydrogen flux for efficient generation of hydrogen. In this manner, the conversion can be carried out by performing steam methane reforming (SMR) and/or water-gas shift reactions (WGS) at high temperature, where the conversion of CO to CO2 and H2 is driven by the removal of H2 to give high conversions.

Abstract: Novel anode materials including various compositions of vanadium-doped strontium titanate (SVT), and various compositions of vanadium- and sodium-doped strontium niobate (SNNV) for low- or intermediate-temperature solid oxide fuel cell (SOFCs). These materials offer high conductivity achievable at intermediate and low temperatures and can be used as the structural support of the SOFC anode and/or as the conductive phase of an anode. A method of making a low- or intermediate-temperature SOFC having an anode layer including SVT or SNNV is also provided.

Abstract: Ceramic fuel cells having enhanced flatness and strength are disclosed. The fuel cell can include a half-cell having, in order, a patterned layer, an anode support layer and an electrolyte layer. Methods of making ceramic fuel cells are also provided.

Abstract: A composite anode for a solid oxide fuel cell (SOFC), comprising an anode support layer (ASL) of Ni—YSZ and an anode functional layer (AFL) of Ni—GDC, displays enhanced mechanical stability and similar or improved electrical efficiency to that of a Ni—GDC ASL for otherwise identical SOFCs. A SOFC employing the composite anode can be used for power generation at temperatures below 700° C., where the composite anode may include a second AFL of GDC disposed between the Ni—GDC layer and a GDC electrolyte.

Abstract: The present invention purposes to provide a hollow fiber membrane module that minimizes the error rate in a manufacturing process thereof, disperses weight by separating an enlarged hollow fiber membrane module into a plurality of small modules, and provides a manufacturing method thereof. The present invention includes a central water tube having a plurality of inlets formed in the circumferential direction thereof, a central air tube provided in the central water tube, a plurality of housings longitudinally provided in the circumferential direction of the central water tube, a hollow fiber membrane provided in the respective housing and in which water is treated by difference of pressure, a fixing part fixing the lower part of the hollow fiber membrane to the housing, and a collector provided in the lower part of the housing, a plurality of small modules being provided in the housing.

Abstract: The present invention purposes to provide a hollow fiber membrane module that minimizes the error rate in a manufacturing process thereof, disperses weight by separating an enlarged hollow fiber membrane module into a plurality of small modules, and provides a manufacturing method thereof. The present invention includes a central water tube having a plurality of inlets formed in the circumferential direction thereof, a central air tube provided in the central water tube, a plurality of housings longitudinally provided in the circumferential direction of the central water tube, a hollow fiber membrane provided in the respective housing and in which water is treated by difference of pressure, a fixing part fixing the lower part of the hollow fiber membrane to the housing, and a collector provided in the lower part of the housing, a plurality of small modules being provided in the housing.