Abstract: An electrode for a fuel cell, a method of preparing the electrode, a catalyst slurry, and a fuel cell including the electrode. The electrode includes an electrode support and a catalyst layer formed on the electrode support, wherein the catalyst layer includes a catalyst material and a water-based binder, wherein the water-based binder is at least one selected from the group consisting of cellulose derivatives and composites of organic polymer materials and inorganic oxides.

Abstract: A catalyst slurry, an electrode prepared by using the same, and a fuel cell including the electrode. The catalyst slurry includes: a catalyst material; a binder; and a solvent including a first liquid for dissolving the binder and a second liquid having a viscosity that is higher than that of the first liquid.

Abstract: A fuel cell including an electrolyte membrane and/or an electrode which includes a crosslinked polybenzoxazine-based compound formed of a polymerized product of at least one selected from a first benzoxazine-based monomer and second benzoxazine-based monomer, the first benzoxazine-based monomer and second benzoxazine-based monomer having a halogen atom or a halogen atom-containing functional group, crosslinked with a cross-linkable compound.

Abstract: A method for the production of mechanically stabilized polyazole polymers, comprising the following steps: a) providing a membrane comprising i.) polyazoles with at least one amino group in a repeating unit except the ones obtainable by reacting aromatic and/or heteroaromatic diaminocarboxylic acids, ii.) at least one strong acid and iii.) at least one stabilizing reagent, the total content of stabilizing reagents in the membrane being within the range of from 0.01 to 30% by weight, b) performing the stabilization reaction in the membrane, immediately or in a subsequent processing step of the membrane, c) if appropriate, additionally doping the membrane obtained in accordance with step b) with a strong acid or concentrating the present strong acid further by removal of present water, wherein the stabilizing agent comprises at least one oxazine-based compound. The polyazole polymer membranes thus obtainable are in particular characterized by a high conductivity and a very good mechanical stability.

Abstract: An electrode for a fuel cell, a membrane electrode assembly including the electrode, and a fuel cell including the membrane electrode assembly. Due to the inclusion of a barrier layer between a diffusion layer and a catalyst layer, the electrode prevents leakage of phosphoric acid moving from the catalyst layer to the diffusion layer and prolongs the lifetime of the membrane electrode assembly.

Abstract: A method of operating a high-temperature fuel cell, the method including increasing the temperature of a fuel cell stack the operation of which has stopped; starting the operation of the fuel cell stack and applying at least a portion of a load to the fuel cell stack when the temperature of the fuel cell stack reaches a first temperature; and applying any remaining load to the fuel cell stack when the temperature of the fuel cell stack reaches a second temperature that is higher than the first temperature.

Abstract: A catalyst coated membrane (CCM) for a fuel cell, including an electrolyte membrane and a catalyst layer formed on at least one surface of the electrolyte membrane, a membrane and electrode assembly (MEA) for a fuel cell, including the CCM, a method of preparing the MEA, and a fuel cell including the MEA. The CCM is formed directly on the electrolyte membrane.

Abstract: A metallic separator for a fuel cell including 2.2 to 6.0 parts by weight of tungsten based on 100 parts by weight of stainless steel containing molybdenum, and the weight ratio of molybdenum to tungsten (Mo/W) is 0.15 to 1.60. The separator for fuel cells has excellent anti-corrosive properties and contact resistance as low as that of a metal material, and thus, a fuel cell having high efficiency can be manufactured at a reasonable cost using the separator.

Abstract: An electrode for a fuel cell, the electrode including a catalyst layer, a method of making the same, and a fuel cell including the electrode. The catalyst layer includes a catalyst and at least one selected from the group consisting a first benzoxazine monomer, represented by Formula 1 below, a second benzoxazine monomer represented by Formula 2 below, a combination thereof, a homopolymer consisting of the first benzoxazine monomer, a homopolymer consisting of the second benzoxazine monomer, and a copolymer consisting of the first and second benzoxazine monomers. The electrode the first and/or second benzoxazine monomers contain fluorine or a fluorine-containing functional group.

Abstract: A compound that is a polymerization product of a compound composition that contains a diisocyanate-based compound and an aromatic polyol, a composition that contains the compound and an interpenetration polymer, a fuel cell electrode including either the compound or the composition, a fuel cell electrolyte membrane including either the compound or the composition, and a fuel cell including at least one selected from the group consisting of the fuel cell electrode and the fuel cell electrolyte membrane.

Abstract: A method of preparing a metal catalyst including a conductive catalyst material and a coating layer formed of a water repellent material on the surface of the conductive catalyst material includes: obtaining a water repellent material solution by mixing a water repellent material and a first solvent; obtaining a conductive catalyst solution by mixing a conductive catalyst material and a first solvent; mixing the water repellent material solution and the conductive catalyst solution; casting the result onto a supporter, drying the cast result and then separating a metal catalyst in a solid state from the supporter; and pulverizing and sieving the product. Also provided is a method of preparing an electrode including the metal catalyst.

Abstract: A composition containing a uniformly dispersed polyoxazine-based compound, a method of preparing the composition, an electrode including the composition, and a fuel cell including the electrode.

Abstract: A composition including a compound having a fluorine functional group, a polymer as a polymerization product of the composition, an electrode and an electrolyte membrane for a fuel cell, which include the composition or the polymer thereof, and a fuel cell including at least one of the electrode and the electrolyte membrane.

Abstract: A hyper-branched polymer, which is a product obtained by performing condensation polymerization reaction of a hyper-branched polymer composition including a diisocyanate-based compound and a dihydroxyamine-based compound, a cross-linked hyper-branched polymer, an electrode and electrolyte membrane for a fuel cell including the hyper-branched polymer or the cross-linked hyper-branched polymer, and a fuel cell including the electrode and the electrolyte membrane.

Abstract: A polymer composition, a cross-linked polymer formed therefrom, an electrolyte membrane and electrode for a fuel cell including the same, and a fuel cell employing the electrode and the electrolyte membrane. The cross-linked polymer includes an oxazine-based monomer capable of retaining phosphoric acid and has excellent mechanical strength. When the cross-linked polymer is used, an electrode and electrolyte membrane for a fuel cell with enhanced capability of retaining phosphoric acid at a wide range of temperature may be manufactured, leading to long-term durability, and enhanced proton conductivity.

Abstract: A compound having an amino group at a terminal thereof and at least one amino group in a repeating unit, a cross-linked material of the compound, a double cross-linked polymer thereof, an electrolyte membrane and an electrode for a fuel cell, which include the cross-linked material of the compound or the double cross-linked polymer thereof, and a fuel cell including at least one of the electrolyte membrane and the electrode.

Abstract: A separator for a fuel cell includes a first layer that includes stainless steel and tungsten and a second layer that includes stainless steel and tungsten. The first layer contains more tungsten than the second layer so that the separator has anticorrosion properties specifically tailored to the environment of the anode and the cathode.

Abstract: A cross-linked polyazole, a method of preparing the cross-linked polyazole, an electrode and an electrolyte membrane for a fuel cell, which include the cross-linked polyazole, a method of manufacturing the electrolyte membrane, and a fuel cell including the cross-linked polyazole.

Abstract: A proton conductive electrolyte including a polymerized polyurethane, polyethylene(metha)acrylic acid (PEAA), and a cross-linking agent mixture; a method of preparing the same; an electrode including a support and a catalyst layer, the catalyst layer including a supported catalyst and a polymerized mixture of a polyurethane based compound and a polyethylene(metha)acrylic acid; a method of preparing the electrode; and a fuel cell including the proton conductive electrolyte and/or the electrode. The proton conductive electrolyte can be prepared at lower costs than conventionally used polybenzimidazole and NAFION and can be easily formed into a membrane with a controlled thickness by casting. The polymer electrolyte membrane has high mechanical strength, flexibility, and excellent ionic conductivity. The electrode remains stable under high temperature operation, a strong binding force is maintained between the support and the catalyst layer, and the electrode has excellent ionic conductivity.

Abstract: A hyper-branched polymer that has a dendritic unit, a linear unit, a terminal unit, and a degree of branching of about 0.05 to about 1. The hyper-branched polymer can be included in an electrode and/or an electrolyte membrane of a fuel cell.