Abstract: The electrode for a fuel cell of the invention includes: an electrode substrate; and a catalyst layer having a filler layer formed on the surface of the electrode substrate and a catalyst coating the filler layer.

Abstract: The catalyst for a fuel cell of the present invention includes a compound including at least one element selected from the group consisting of silicon, aluminum, and titanium, and a catalytic metal.

Abstract: A fuel cell including a plurality of tubular unit cells each including: a first electrode layer, an electrolyte layer, and a second electrode layer, stacked radially in a direction from a center axis to an outer region thereof; an internal current collector in an interior of the unit cell; and an external current collector arranged at an outer circumferential surface of the unit cell, the external current collector including a plurality of connecting portions configured to electrically connect between the unit cell and at least one another unit cell of the plurality of unit cells, and the connecting portions form two or more electrical paths between a unit cell of the plurality of unit cells and another unit cell of the plurality of unit cells.

Abstract: A tubular fuel cell module having improved current collecting efficiency. In one embodiment, the fuel cell module includes: a fuel cell unit; a first current collector extending along an outer side of the fuel cell unit; and a second current collector wound around the first current collector and around the outer side of the fuel cell unit. Here, the outer side of the fuel cell unit is a curved outer side, the first current collector has a curved inner side facing the curved outer side of the fuel cell unit, and the curved inner side of first current collector is shaped to match the curved outer side of the fuel cell unit.

Abstract: The present invention includes a catalyst for a fuel cell which contains a transition element core, and a surface layer that contains at least one selected from the group including platinum, a platinum-transition element alloy, and a combination thereof, and that exists on the surface of the core. The catalyst being prepared without a surfactant.

Abstract: The polymer electrolyte membrane of the present invention includes a proton conductive cation exchange resin, a non-proton-conductive polymer, and an inorganic additive. The inorganic additive is adapted to inhibit a phase separation between the proton conductive cation exchange resin and the non-proton-conductive polymer.

Abstract: The cathode catalyst for a fuel cell includes an RuSe alloy having an average particle size of less than or equal to 6 nm. The cathode catalyst may also include a metal carbide. The RuSe alloy is a highly active amorphous catalyst.

Abstract: A fuel cell includes a unit cell, a cell fixing member and a welding portion. The unit cell includes a first electrode layer, an electrolyte layer surrounding the first electrode layer, a second electrode layer surrounding the electrolyte layer while exposing an end portion of the electrolyte layer, and a coating layer formed by coating a mixture of ceramic and metal on the exposed end portion of the electrolyte layer. The cell fixing member includes a flow tube inserted into the unit cell, a fixing tube provided to an outside of the flow tube, and a connecting portion connecting the fixing tube and the flow tube to each other and to restrict an insertion depth of the electrolyte layer and the first electrode layer. The welding portion fixes and seals the coating layer and the inner circumferential surface of the fixing tube to each other.

Abstract: A manufactured fuel cell includes: a unit cell including a first electrode layer, an electrolyte layer surrounding an outer circumference of the first electrode layer, and a second electrode layer surrounding the electrolyte layer while exposing an end of the electrolyte layer; a plating layer around an outer circumference of the exposed electrolyte layer; a cell coupling member including a passage pipe inserted into the unit cell and forming a continuous passage from the inside of the unit cell, a coupling pipe provided outside of the passage pipe to form a space accommodating an end of the unit cell from the passage pipe, and a connecting unit connecting the coupling pipe with the passage pipe and restricting an insertion depth of the electrolyte layer and the first electrode layer; and a welding portion fixing and sealing the plating layer and an inner circumference of the coupling pipe with each other.

Abstract: The present invention relates to a membrane-electrode assembly for a fuel cell and a fuel cell system comprising the same. The membrane-electrode assembly includes an anode and a cathode facing each other and a polymer electrolyte membrane positioned therebetween. The polymer electrolyte membrane adheres to the anode through a binder disposed between the polymer electrolyte membrane and the anode, and adheres to the cathode through a binder disposed between the polymer electrolyte membrane and the cathode. The binder and the polymer electrolyte membrane can include a cation exchange resin and an inorganic additive.

Abstract: The present invention relates to a membrane-electrode assembly for a fuel cell and a fuel cell system comprising the same. The membrane-electrode assembly includes an anode and a cathode facing each other and a polymer electrolyte membrane positioned therebetween. The polymer electrolyte membrane adheres to the anode through a binder disposed between the polymer electrolyte membrane and the anode, and adheres to the cathode through a binder disposed between the polymer electrolyte membrane and the cathode. The binder and the polymer electrolyte membrane can include a cation exchange resin and an inorganic additive.

Abstract: The present invention relates to a catalyst composite material which includes a catalyst characterized by oxygen-reducing activity and which is selected from the group consisting of metals, metal oxides, and combinations thereof, and a resin layer which covers at least a portion of the surface of the catalyst and comprises an anion exchange resin layer and a cation exchange resin layer.

Abstract: A micro reforming reactor includes a first substrate with a micro channel having a width of less than 1,000 ?m bonded to a second substrate to form a micro tunnel. An adhesive layer is formed on the internal walls of the micro tunnel using a flow coating method. A catalyst may then be optionally formed on the adhesive coated internal walls of the micro tunnel, also using a flow coating method.

Abstract: A membrane-electrode assembly for a fuel cell including a first substrate and a second substrate and a catalyst layer between the first substrate and the second substrate is provided, where the first substrate is a polymer electrolyte membrane and the second substrate is a electrode substrate, or the first substrate is the electrode substrate and the second substrate is the polymer electrolyte membrane. The catalyst layer has a h1/t1 ratio of about 0.5 or more, where s1 represents a point on the first substrate at one end of the catalyst layer, h1 represents a distance between the first substrate and the second substrate, s2 represents a point on the first substrate closest to s1 at which a height (h) of the catalyst layer becomes h1, and t1 represents the distance between the s1 and the s2. The membrane-electrode assembly can include a greater amount of catalyst by decreasing a shadow effect, and thereby increasing its energy density.

Abstract: The membrane-electrode assembly for a fuel cell includes an anode and a cathode facing each other and a polymer electrolyte membrane interposed therebetween. The cathode includes an electrode substrate and a catalyst layer disposed on the electrode substrate, and the catalyst layer has a mesopore volume ranging from 0.013 to 0.04 cm3/g. The membrane-electrode assembly has low mass resistance and contributes to the overall increased performance of the fuel cell by having optimal pore volumes (e.g., mesopore volume) in a cathode catalyst layer to provide ease of transfer and release of materials within the membrane-electrode assembly of the fuel cell.

Abstract: The present invention relates to an electrode for a fuel cell containing a catalyst layer, a gas diffusion layer including a conductive substrate, and a micro-porous layer interposed between the catalyst layer and the gas diffusion layer and including a conductive material and a dispersant.

Abstract: A membrane-electrode assembly constructed with an anode and a cathode facing each other, and a polymer electrolyte membrane disposed therebetween. At least one of the anode and the cathode includes an electrode substrate that includes a carbon fiber based sheet coated with micro-carbons and a catalyst layer disposed on the electrode substrate with the micro-carbons contacting the catalyst layer.

Abstract: A fuel cell stack and a manufacturing method thereof are disclosed. The fuel cell stack has at least one unit cell. The unit cell includes a first electrode collector, a first electrode layer formed on the first electrode collector, an electrolyte layer formed on the first electrode layer, a second electrode layer formed on the electrolyte layer, and a second electrode collector formed on the second electrode layer. At least one of the first and second electrode collectors may include a porous metal substrate having a density in a range from about 800 kg/m3 to about 1600 kg/m3 and a plurality of metal wires electrically connected to the porous metal substrate. The density of an electrode collector may be optimized to have an improved contact state between an electrode and the electrode collector. During operation, the fuel cell stack may thus have enhanced performance characteristics.

Abstract: A solid oxide fuel cell and a manufacturing method thereof are disclosed. A solid oxide fuel cell includes first and second electrode formed opposite to each other and an electrolyte layer formed between the first and the second electrodes. Either the first electrode or the second electrode may include between about 1 to about 20 wt % of a thermoelectronic material configured to increase thermal emission of electrons with an increase in temperature.

Abstract: A fuel cell including a plurality of tubular unit cells each including: a first electrode layer, an electrolyte layer, and a second electrode layer, stacked radially in a direction from a center axis to an outer region thereof; an internal current collector in an interior of the unit cell; and an external current collector arranged at an outer circumferential surface of the unit cell, the external current collector including a plurality of connecting portions configured to electrically connect between the unit cell and at least one another unit cell of the plurality of unit cells, and the connecting portions form two or more electrical paths between a unit cell of the plurality of unit cells and another unit cell of the plurality of unit cells.