Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode disposed alternately with the dielectric layer; and an external electrode disposed on the body, wherein the dielectric layer includes a first region extending from an interfacial surface with the internal electrode to 50 nm of the dielectric layer in an inward direction and a second region excluding the first region, and wherein, in the first region, an average content of In based on overall elements excluding oxygen is 0.5 at % or more and 2.0 at % or less, and an average content of Sn based on overall elements excluding oxygen is 0.5 at % or more and 1.75 at % or less.

Abstract: A hydrogen storage system includes: a first hydrogen tank provided in a fuel cell electric vehicle; a second hydrogen tank provided in the fuel cell electric vehicle and configured to store hydrogen independently of the first hydrogen tank; a manifold provided in the fuel cell electric vehicle and connected to the first hydrogen tank and the second hydrogen tank; a hydrogen supply line configured to connect the manifold and a fuel cell stack provided in the fuel cell electric vehicle; and a flow rate adjusting valve configured to adjust a flow rate of the hydrogen to be supplied to the manifold from at least one of the first hydrogen tank or the second hydrogen tank in accordance with a difference in pressure between the first hydrogen tank and the second hydrogen tank, so as to minimize a difference in pressure between the hydrogen tanks to improve safety and reliability.

Abstract: A hydrogen storage system includes: a first hydrogen tank provided in a fuel cell electric vehicle; a second hydrogen tank provided in the fuel cell electric vehicle and configured to store hydrogen independently of the first hydrogen tank; a manifold provided in the fuel cell electric vehicle and connected to the first hydrogen tank and the second hydrogen tank; a hydrogen supply line configured to connect the manifold and a fuel cell stack provided in the fuel cell electric vehicle; and a flow rate adjusting valve configured to adjust a flow rate of the hydrogen to be supplied to the manifold from at least one of the first hydrogen tank or the second hydrogen tank in accordance with a difference in pressure between the first hydrogen tank and the second hydrogen tank, so as to minimize a difference in pressure between the hydrogen tanks to improve safety and reliability.

Abstract: The present disclosure relates to a hydrogen filling system that includes a receptacle that is provided in a fuel cell electric vehicle and to which a fueling nozzle that dispenses hydrogen is connected, a manifold connected with a hydrogen tank provided in the fuel cell electric vehicle, a hydrogen filling line that connects the receptacle and the manifold, a hydrogen supply line that connects a fuel cell stack provided in the fuel cell electric vehicle and the manifold, and a buffer line that is connected to the hydrogen supply line and that heats the receptacle using heat of compression by the hydrogen that is supplied into the hydrogen supply line during filling of the hydrogen tank with the hydrogen. The present disclosure may obtain advantageous effects of suppressing freezing of the receptacle and improving safety and reliability.

Abstract: The present disclosure relates to a hydrogen filling system that includes a receptacle that is provided in a fuel cell electric vehicle and to which a fueling nozzle that dispenses hydrogen is connected, a manifold connected with a hydrogen tank provided in the fuel cell electric vehicle, a hydrogen filling line that connects the receptacle and the manifold, a hydrogen supply line that connects a fuel cell stack provided in the fuel cell electric vehicle and the manifold, and a buffer line that is connected to the hydrogen supply line and that heats the receptacle using heat of compression by the hydrogen that is supplied into the hydrogen supply line during filling of the hydrogen tank with the hydrogen. The present disclosure may obtain advantageous effects of suppressing freezing of the receptacle and improving safety and reliability.

Abstract: A membrane humidifier includes buffering and spacing structures each interposed between adjacent hollow fiber membranes of a plurality of hollow fiber membranes arranged in a housing of the membrane humidifier, wherein the buffering and spacing structures buffer a pressure of air supplied from an air blower and maintain a spacing between the adjacent hollow fiber membranes.

Abstract: A membrane humidifier includes buffering and spacing structures each interposed between adjacent hollow fiber membranes of a plurality of hollow fiber membranes arranged in a housing of the membrane humidifier, wherein the buffering and spacing structures buffer a pressure of air supplied from an air blower and maintain a spacing between the adjacent hollow fiber membranes.

Abstract: An apparatus that efficiently supplies air to a fuel cell within a vehicle. In particular, a compressor compresses air and supplies a first portion of the compressed air to an evaporator and a second portion to a heat exchanger. A drain valve also discharges condensate water from a fuel cell to the evaporator so that the evaporator receives some of both the compressed air and the condensate water and supplies air humidified by evaporation of the condensate water directly to the fuel cell. A heat exchanger also receives some of the compressed air, transfers heat from the received compressed air to the evaporator, and discharges cooled air to a humidifier. The humidifier receives and humidifies the cooled air and supplies the humidified air to the fuel cell.

Abstract: In preferred aspect, the present invention features a membrane humidifier for a fuel cell which can control the amount of air flow and the amount of humidification based on the amount of water produced in a fuel cell stack according to a power level of the fuel cell stack while humidifying dry air and supplying humidified air to the fuel cell stack.

Abstract: A membrane humidifier for a fuel cell is provided and includes a plurality of wet air channels and dry air channels and a cooling channel. The plurality of wet air channels and dry air channels are disposed across a moisture exchange membrane. The cooling channel is adjacently disposed across a wet air channel and a cooling channel separator to condense wet air that passes through the wet air channel.

Abstract: Disclosed is a humidifier for a fuel cell system including a separator plate which is corrugated to provide an alternating concave-convex surface, and humidifying films provided at an upper end and a lower end of the separator plate, respectively. More specifically, the separator plate and the humidifying films form a series of drift spaces in which a width of an upper end portion is different from a width of a lower end portion which is contact with the humidifying film.

Abstract: An apparatus that efficiently supplies air to a fuel cell within a vehicle. In particular, a compressor compresses air and supplies a first portion of the compressed air to an evaporator and a second portion to a heat exchanger. A drain valve also discharges condensate water from a fuel cell to the evaporator so that the evaporator receives some of both the compressed air and the condensate water and supplies air humidified by evaporation of the condensate water directly to the fuel cell. A heat exchanger also receives some of the compressed air, transfers heat from the received compressed air to the evaporator, and discharges cooled air to a humidifier. The humidifier receives and humidifies the cooled air and supplies the humidified air to the fuel cell.

Abstract: In preferred aspect, the present invention features a membrane humidifier for a fuel cell which can control the amount of air flow and the amount of humidification based on the amount of water produced in a fuel cell stack according to a power level of the fuel cell stack while humidifying dry air and supplying humidified air to the fuel cell stack.