Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.

Abstract: Disclosed are an electrode slurry for a fuel cell capable of forming a multilayer structure without an interface using a first support and a second support having different mesopore fractions and densities, a multilayer electrode structure using the same, and a manufacturing method thereof. The electrode slurry for a fuel cell includes a first catalyst including a first support on which a first metal is supported, a second catalyst including a second support on which a second metal is supported, an ionomer, and a solvent, the first support and the second support having different mesopore fractions and densities.

Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.

Abstract: Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.

Abstract: The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.

Abstract: Disclosed is an electrode for a membrane-electrode assembly, in which a hydrophilic group and a hydrophobic portion of an ionomer are bonded to a catalyst so that the alignment of the hydrophilic group and the hydrophobic portion of the ionomer is controlled, and a method of manufacturing the same.

Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.

Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.

Abstract: Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.

Abstract: The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.

Abstract: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.

Abstract: A method for manufacturing a fuel cell electrode includes forming a first mixture by mixing a first cation exchange resin, a metal catalyst, and a first solvent, powderizing the first mixture to produce a first catalyst powder comprising the metal catalyst coated with the first cation exchange resin, forming a second mixture by mixing the first catalyst powder, a second cation exchange resin, and a second solvent, powderizing the second mixture to produce a catalyst powder having a core and two or more layers of shells and being coated with the second cation exchange resin, mixing the catalyst powder having the core and two or more layers of shells with a third solvent to produce a catalyst slurry, and coating, using the catalyst slurry, to produce an electrode.

Abstract: A method for manufacturing an electrode for a fuel cell includes a mixing step of producing a first mixed solution by mixing a carbon support, a metal catalyst, a binder and a first dispersion solvent, a drying step of producing a first mixed solution dried body by drying the first mixed solution, a heat treatment step of heating the first mixed solution dried body, a second mixed solution production step of producing a second mixed solution by dissolving the heat-treated first mixed solution dried body in a second dispersion solvent, and a release paper coating step of producing an electrode by coating the second mixed solution onto a release paper, and then drying the second mixed solution.

Abstract: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.

Abstract: The present invention relates to a method for manufacturing a polymer electrolyte electrode for fuel cells that can improve performance of the electrode for fuel cells and the capability to transfer substances into the electrode by sequentially bringing two kinds of cation exchange resins into contact with catalysts, powderizing the same and incorporating a catalyst having a multilayer structure including a core and two or more layers of shells into the electrode for fuel cells, and an electrode manufactured by the method.

Abstract: A method for manufacturing an electrode for a fuel cell includes a mixing step of producing a first mixed solution by mixing a carbon support, a metal catalyst, a binder and a first dispersion solvent, a drying step of producing a first mixed solution dried body by drying the first mixed solution, a heat treatment step of heating the first mixed solution dried body, a second mixed solution production step of producing a second mixed solution by dissolving the heat-treated first mixed solution dried body in a second dispersion solvent, and a release paper coating step of producing an electrode by coating the second mixed solution onto a release paper, and then drying the second mixed solution.

Abstract: A release liner used for manufacturing a membrane electrode assembly includes one or more first films formed of a material having a releasing property, and a second film bonded to the first films and having a tensile strength higher than a tensile strength of the first film. The first films are formed of polytetrafluoroethylene (PTFE) having a non-bonding property and the releasing property.

Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.

Abstract: The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed.