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Membrane electrode assembly (MEA)

Subclass of:

429 - Chemistry: electrical current producing apparatus, product, and process

429400000 - FUEL CELL, SUBCOMBINATION THEREOF, OR METHOD OF MAKING OR OPERATING

429479000 - Fuel cell with solid electrolyte

429482000 - Specified electrode/electrolyte combination

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DocumentTitleDate
20100159351MEMBRANE-ELECTRODE ASSEMBLY, AND MEMBRANE-ELECTRODE-(GAS DIFFUSION LAYER) ASSEMBLY AND SOLID POLYMER FUEL CELL EACH COMPRISING THE SAME - A membrane-electrode assembly 06-24-2010
20110195338HYPER-BRANCHED POLYMER, ELECTRODE AND ELECTROLYTE MEMBRANE INCLUDING THE HYPER-BRANCHED POLYMER, AND FUEL CELL INCLUDING AT LEAST ONE OF THE ELECTRODE AND THE ELECTROLYTE MEMBRANE - 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.08-11-2011
20120244452DIRECT CATALYST COATING ON FREE STANDING MICROPOROUS LAYER - Methods of making reinforced membrane electrode assemblies are described. Catalyst coated free standing microporous layers and reinforced membrane electrode assemblies are also described.09-27-2012
20130157170METHOD FOR DEPOSITING CATALYST IN FUEL CELL, FUEL CELL MANUFACTURED BY THE SAME AND OPERATION APPARATUS FOR THE SAME - Provided are a method for depositing a catalyst in a fuel cell, a fuel cell obtained by the method, and an apparatus for operating the fuel cell. The method for depositing a catalyst in a fuel cell includes: oxidizing a catalyst provided at the top of the cathode with air introduced to the cathode under the operating condition of the fuel cell; and depositing the oxidized catalyst gas at the reactive zone of the cathode. The method allows deposition of an activated catalyst ingredient at the cathode of a fuel cell by disposing a catalyst (such as Pt, Ag, Pd, Ru, etc.) highly reactive to reduction of oxygen at the side to which oxygen is introduced, and oxidizing and vaporizing the catalyst under an actual operating condition.06-20-2013
20100330453POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL SYSTEM AND MANUFACTURING METHOD THEREOF - A polymer electrolyte membrane for a fuel cell has a crystalline fusion enthalpy measured by differential scanning calorimetry (DSC) of about 67.3 J/g or more. Such crystallinity improves dimensional stability, mechanical characteristics, and ion conductivity of the polymer electrolyte membrane.12-30-2010
20130029248FUEL CELL - A fuel cell including a single fuel cell which includes a membrane electrode including a polymer electrolyte membrane, an anode electrode on one surface of the polymer electrolyte membrane, and a cathode electrode on another surface of the polymer electrolyte membrane, the anode electrode including an anode catalyst layer and a gas diffusion layer and the cathode electrode including a cathode catalyst layer and a gas diffusion layer. At least one of the anode cathode catalyst layers includes core-shell type catalyst particles, each having a core and a shell covering the core and including a shell metallic material. At least one of the polymer electrolyte membrane, anode catalyst layer, gas diffusion layer at the anode side, cathode catalyst layer and gas diffusion layer at the cathode side includes metallic nanoparticles having an average particle diameter different from that of the core-shell type catalyst particles and including the shell metallic material.01-31-2013
20130052561POLYMER ELECTROLYTE MEMBRANE AND MEMBRANE/ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL - To provide a polymer electrolyte membrane and a membrane/electrode assembly for a polymer electrolyte fuel cell, excellent in the durability to hydrogen peroxide or peroxide radicals.02-28-2013
20100129730METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY, MEMBRANE ELECTRODE ASSEMBLY, APPARATUS FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL - This invention provides a method for producing a membrane electrode assembly comprising steps of: preparing a precursor of a membrane electrode assembly wherein a catalyst mixture comprising an electrolyte resin and a catalyst-carrying conductor is applied or placed on an electrolyte membrane; and externally exposing the precursor of the membrane electrode assembly to a superheated medium under oxygen-free or low-oxygen conditions and heating the boundary of the electrolyte membrane and the catalyst mixture in the precursor of the membrane electrode assembly by condensation heat of the superheated medium to fix the catalyst mixture to the electrolyte membrane. This method enables the production of a membrane electrode assembly that is substantially free of boundary and that has a catalyst layer in which a porous and sufficient three-phase boundary is present.05-27-2010
20100129729CEOSSLINKED AROMATIC POLYMER, POLYMER ELECTROLYTE,CATALYST INK, POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY AND FUEL CELL - A crosslinked aromatic polymer which is produced by a process comprising a reaction step of reacting an aromatic monomer having an ion exchange group of the following general formula (1) and a poly-functional aromatic monomer of the following general formula (2) in a solvent, thereby generating a gel swollen with the solvent:05-27-2010
20110014543MEMBRANE-ELECTRODE ASSEMBLY, FUEL CELL, AND FUEL CELL SYSTEM - A membrane electrode assembly includes solid polymer electrolyte membrane, an anode, and cathode. The cathode has a stacked body formed of a catalyst layer and a gas diffusion layer. The catalyst layer, which contains catalyst metal-supporting carbon particles and an ion conductor, further contains a mesoporous humidity control agent whose amount of water adsorption rises steeply as a relative humidity increases in a specific relative humidity region.01-20-2011
20130059228FLOW FIELD PLATE FOR ELECTROCHEMICAL FUEL CELL - A flow field plate comprises a first flow field; an opposing second flow field; and at least one flow channel formed in the first flow field, the at least one flow channel comprising: a first side and an opposing second side separated by an open-faced top and a bottom; and a first side channel formed in a portion of the open-faced top and in a portion of the first side along a continuous length of the at least one flow channel, the first side channel comprising a first side wall and a first bottom wall; wherein the first side wall of the first side channel and the first bottom wall of the first side channel form an obtuse angle in cross-section; and a depth of the bottom of the at least one flow channel is greater than a depth of the bottom wall of the first side channel.03-07-2013
20120115065ION-CONDUCTIVE COMPOSITE ELECTROLYTE, MEMBRANE-ELECTRODE ASSEMBLY USING THE SAME, ELECTROCHEMICAL DEVICE USING MEMBRANE-ELECTRODE ASSEMBLY, AND METHOD FOR PRODUCING ION-CONDUCTIVE COMPOSITE ELECTROLYTE MEMBRANE - Provided are an ion-conductive composite electrolyte that improves ionic conductivity, a membrane-electrode assembly and an electrochemical device using the same, and a method for producing an ion-conductive composite electrolyte membrane.05-10-2012
20120115064PROCESS FOR PRODUCING FUEL CELL CATALYST, FUEL CELL CATALYST OBTAINED BY PRODUCTION PROCESS, AND USES THEREOF - It is an object of the present invention to provide a production process which can produce a fuel cell catalyst having excellent durability and high oxygen reducing activity.05-10-2012
20110027686MEMBRANE-ELECTRODE ASSEMBLY FOR SOLID POLYMER ELECTROLYTE FUEL CELL AND SOLID POLYMER ELECTROLYTE FUEL CELL - A membrane-electrode assembly for a solid polymer electrolyte fuel cell includes a proton-conductive composite membrane including a reinforcing sheet and an electrolyte membrane. The reinforcing sheet has through-holes extending in a thickness direction of the reinforcing sheet. The through-holes are provided in a portion other than an edge of the reinforcing sheet in an in-plane direction. An anode electrode layer is provided on one surface of the proton-conductive composite membrane. A cathode electrode layer is provided on another surface of the proton-conductive composite membrane. At least one of an edge of the anode electrode layer and an edge of the cathode electrode layer in the in-plane direction is arranged outside in the in-plane direction with respect to the portion in which the plurality of through-holes are provided.02-03-2011
20100285388CATALYST-COATED PROTON EXCHANGE MEMBRANE AND PROCESS OF PRODUCING SAME - The catalyst-coated membrane has a proton exchange membrane with two opposite sides, and a catalyst coating applied directly to one of the two sides, the catalyst coating having a plurality of openings defined therethrough and scattered thereacross, the openings defining passages to the proton exchange membrane in which corresponding electro-chemical active surfaces of the catalyst coating are exposed. The openings can be defined in the catalyst coating after application thereof or during application thereof.11-11-2010
20110281199ELECTRODE FOR FUEL CELL, METHOD OF PREPARING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE SAME - An electrode for a fuel cell with an operating temperature of about 100° C. or more. The electrode has an electrode catalyst layer that includes an electrode catalyst with a conductive carrier and catalyst particles supported on the conductive carrier. The electrode catalyst includes an acid impregnated electrode catalyst in which the conductive carrier is impregnated with an acid component having proton conductivity by a heat treatment with the acid component in advance, and a non-impregnated electrode catalyst. The acid impregnated electrode catalyst and the non-impregnated electrode catalyst are uniformly distributed in the electrode catalyst layer.11-17-2011
20100227249PRODUCTION METHOD OF AN ELECTRODE CATALYST FOR A FUEL CELL, ELECTRODE CATALYST FOR A FUEL CELL, AND SOLID POLYMER FUEL CELL COMPRISING THE SAME - A method for producing an electrode catalyst for a fuel cell, including: an immersion step (step A) for immersing one or more selected from a catalyst component, a carrier of conductive particles, and a polymer electrolyte in a solvent; a catalyst loading step (step B) for loading the catalyst component on the carrier; and a reaction site forming step (step C) for depositing the polymer electrolyte onto the catalyst-loaded carrier, characterized by irradiating ultrasonic waves in at least one of steps A, B, and C. In the present invention, by suppressing a catalyst from being loaded inside the pores of a carrier, a method for producing an electrode catalyst for a fuel cell which increases the utilization rate of a noble metal catalyst and which improves power generation performance, an electrode catalyst for a fuel cell, and a solid polymer fuel cell provided therewith which can obtain high cell output can be obtained.09-09-2010
20100178583ELECTRODE COMPOSITE MATERIAL - The present invention refers to a self-humidifying electrically conducting composite material for the manufacture of a fuel cell.07-15-2010
20110300469ELECTROLYTE MEMBRANE AND MEMBRANE-ELECTRODE ASSEMBLY - An electrolyte membrane having a structure wherein fine rubber particles having substantially no ion-conducting group and having an average particle size of 20 nm to 1 μm are uniformly dispersed in a matrix including a resin component having ion-conducting group. The electrolyte membrane has high bonding ability to electrodes and does not cause cracks and ruptures because it is kept flexible even under low humid or absolutely dried condition, in addition, shows high ion conductivity even under low humid or absolutely dried condition because the matrix having ion-conducting groups are continuous.12-08-2011
20100143821COMPOSITIONS OF NANOMETAL PARTICLES CONTAINING A METAL OR ALLOY AND PLATINUM PARTICLES - A composition comprising an admixture of at least platinum particles and metal nanoparticles of metal that, when in admixture with the platinum particles, beneficially alters the characteristics of the platinum, including metals selected from one or more of the metals in groups 3-16, lanthanides, combinations thereof, and/or alloys thereof. The composition could be used to form an ink that further comprises an ionically conductive material, such as a polymer, capable of ionic networking throughout the ink composition so as to create a substantially structurally coherent mass without significantly impacting the reactivity of a substantial number of the nanoparticles. In one application, the ink may be used to form a catalyst whereby the ink is applied to an electrically conductive backing material, such as carbon paper or fibers. In another application, the ink may be used to form an electrode whereby the ink may be applied to an electrically conductive material, and wherein the ink comprises an admixture of platinum particles and metal nanoparticles.06-10-2010
20110020730FILM FOR REINFORCING ELECTROLYTE MEMBRANE OF POLYMER ELECTROLYTE FUEL CELL - An object of the present invention is to provide a biaxially oriented film suitable as a reinforcing member for an electrolyte membrane of a polymer electrolyte fuel cell, the film having excellent hot water resistance in a high-temperature and high-humidity use environment and being capable of maintaining the reinforcing effect for a prolonged period of time. The invention resides in a biaxially oriented film for reinforcing an electrolyte membrane of a polymer electrolyte fuel cell, the film being characterized in that the film (i) contains syndiotactic polystyrene as a major component and (ii) has a Young's modulus in at least one of the machine direction and the transverse direction ranging from 4,500 to 8,000 MPa.01-27-2011
20110136039MEMBRANE ELECTRODE ASSEMBLY AND METHODS FOR MAKING SAME - A membrane electrode assembly manufacturing method that includes: (a) forming a first electrode on a first release paper and a second electrode on a second release paper corresponding to the first electrode; (b) forming first incision parts in the first release paper at a predetermined interval along the first electrode's edge and second incision parts in the second release paper at a predetermined interval along the second electrode's edge; (c) adhering a first release paper surface on which the first electrode is formed on one electrolyte membrane surface and adhering one second release paper surface in which the second electrode is formed on the other electrolyte membrane surface; and (d) removing one part of the first release paper corresponding to the first electrode along the first incision part and removing one part of the second release paper corresponding to the second electrode along the second incision part.06-09-2011
20100196793NANOENGINEERED MEMBRANE-ELECTRODE ASSEMBLY FOR HIGH-TEMPERATURE PROTON EXCHANGE MEMBRANE FUEL CELLS - A membrane electrode assembly for a high-temperature proton-exchange membrane fuel cell includes a nano-engineered polymeric membrane between an anode and a cathode. The membrane is an electrical insulator, but permits that passage of protons through the membrane. The membrane has a plurality of blind pores therein, each blind pore having an electrically-conductive coating along its inner wall that is in electrical contact with the adjacent one of the anode or cathode. The electrically-conductive coating includes a catalyst, such as platinum, for promoting the liberation of a proton and an electron from a chemical molecule, such as hydrogen, and/or for promoting the combination of a proton, an electron and another molecule, such as oxygen, to form yet another molecule, such as water.08-05-2010
20100279196Method of manufacturing 5-layer MEA having improved electrical conductivity - The present invention provides a method of manufacturing a 5-layer MEA having an improved electrical conductivity capable of reducing electrical contact resistance between a catalyst layer and a micro-porous layer (MPL) by forming a new electrical conductive layer between the catalyst layer of a 3-layer MEA and the MPL.11-04-2010
20120295181BENZOXAZINE-BASED MONOMER, POLYMER THEREOF, ELECTRODE FOR FUEL CELL INCLUDING THE SAME, ELECTROLYTE MEMBRANE FOR FUEL CELL INCLUDING THE SAME, AND FUEL CELL USING THE SAME - A benzoxazine-based monomer, a polymer thereof, an electrode for a fuel cell including the same, an electrolyte membrane for a fuel cell including the same, and a fuel cell using the same. The aromatic ring may contain up to 2 nitrogens within the ring. Single ring and fused ring substituents are attached to the pendent nitrogen. The ring substituents may be heterocyclic.11-22-2012
20100291465SEPARATOR PLATES FORMED BY PHOTOPOLYMER BASED PROCESSES - A separator plate for a fuel cell is provided, including a substrate having a radiation-cured first flow field layer disposed thereon. A method for fabricating the separator plate is also provided. The method includes the steps of providing a substrate; applying a first radiation-sensitive material to the substrate; placing a first mask between a first radiation source and the first radiation-sensitive material, the first mask having a plurality of substantially radiation-transparent apertures; and exposing the first radiation-sensitive material to a plurality of first radiation beams to form a radiation-cured first flow field layer adjacent the substrate. A fuel cell having the separator plate is also provided.11-18-2010
20110207018SOLID POLYMER FUEL CELL - A polymer electrolyte fuel cell includes a membrane electrode assembly including a polymer electrolyte membrane and a pair of catalyst electrodes sandwiching the polymer electrolyte membrane; a pair of separators sandwiching the membrane electrode assembly, the separators each including linear reaction gas channels defined by linear channel ribs, a reaction gas supply manifold hole, and a reaction gas discharge manifold hole; and an inlet gas distribution section for connecting the reaction gas supply manifold hole and the reaction gas channels, wherein the inlet gas distribution section includes n (where n is an integer of 2 or more) distribution ribs for partitioning the inlet gas distribution section into a plurality of spaces, the distribution ribs each having a longitudinal axis perpendicular to a longitudinal axis of the linear reaction gas channels, the distribution ribs each having two or more slits provided therein, the slits being in parallel to the longitudinal axis of the linear reaction channels, when, among the distribution ribs, the distribution rib positioned closest to the reaction gas supply manifold hole is considered as a first distribution rib and the distribution rib positioned closest to the reaction gas channels as an nth distribution rib, and when, among the spaces, the space positioned between the first distribution rib and the reaction gas supply manifold hole is considered as a diffusion space, and an average of sectional areas of the diffusion space, the sectional areas taken along the longitudinal axis of the reaction gas channel and along the normal to the separator's surface, is larger than a sectional area of any of the slits of the first distribution rib, the sectional area taken along the longitudinal axis of the distribution rib and along the normal to the separator's surface.08-25-2011
20100143824INTERLOCKING STRUCTURE FOR HIGH TEMPERATURE ELECTROCHEMICAL DEVICE AND METHOD FOR MAKING THE SAME - Layered structures and associated fabrication methods that serve as the foundation for preparing high-operating-temperature electrochemical cells have a porous ceramic layer and a porous metal support or current collector layer bonded by mechanical interlocking which is provided by interpenetration of the layers and/or roughness of the metal surface. The porous layers can be infiltrated with catalytic material to produce a functioning electrochemical electrode.06-10-2010
20100143823ELECTROLYTE MEMBRANE AND MEMBRANE ELECTRODE ASSEMBLY USING THE SAME - An electrolyte membrane (06-10-2010
20110229795Nanowire-Based Membrane Electrode Assemblies for Fuel Cells - The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.09-22-2011
20100178582IONIC LAYER WITH OXYGEN EVOLUTION REACTION CATALYST FOR ELECTRODE PROTECTION - A fuel cell includes a first electrode and a second electrode with an ion conducting polymer membrane positioned between these electrodes. The fuel cell further comprises a first OER catalyst-containing ionic layer positioned between the first electrode and the ion conducting polymer membrane. The first OER catalyst-containing layer includes an OER catalyst-containing compound, an ion conducting polymer and carbon. Characteristically, the weight ratio of ion conducting polymer to carbon is from about 10 to about 100. A method for forming the fuel cell is also provided.07-15-2010
20100178584ELECTRODE CATALYST COMPOSITION, METHOD FOR PRODUCTION THEREOF, ELECTRODE, AND FUEL CELL AND MEMBRANE-ELECTRODE ASSEMBLY EACH COMPRISING THE ELECTRODE - It is an object of the present invention to provide an electrode catalyst composition capable of forming an electrode to enhance the power generation efficiency in a fuel cell, in particular a single-chamber solid electrolyte fuel cell. The electrode catalyst composition of the present invention comprises gold and platinum, wherein the number of gold atoms is exceeding 0 and not more than 3 when the number of platinum atoms is 100.07-15-2010
20130122397POLYMER ELECTROLYTE FUEL CELL AND FUEL CELL SYSTEM INCLUDING THE SAME - A polymer electrolyte fuel cell according to the present invention includes: an electrolyte layer-electrode assembly (05-16-2013
20100261090Cathode catalyst for fuel cell, and membrane-electrode assembly for fuel cell and fuel cell system comprising same - A cathode catalyst for a fuel cell includes Ru, Fe, and A, where A is Se or S. A cathode catalyst may also include a carbon-based material and crystalline M10-14-2010
20100190088MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL THEREWITH - A membrane electrode assembly for a polymer electrolyte fuel cell has superior power generation characteristics under low humidity conditions and superior starting characteristics under low temperature conditions. In the membrane electrode assembly for a polymer electrolyte fuel cell in which a polymer electrolyte membrane is disposed between a pair of electrodes containing a catalyst, the polymer electrolyte membrane has a polymer segment A having an ion conductive component and a polymer segment B not having an ion conductive component. Furthermore, in the case in which the polymer electrolyte membrane is immersed in water at 90° C. for 30 minutes, absorbed water which exhibits a thawing temperature of from −30 to 0° C. is in a range from 0.01 to 3.0 g per 1 g of the polymer.07-29-2010
20100190087FUEL CELL - A fuel distribution mechanism of a fuel cell, including a fuel inlet communicating with the supply channel, a plurality of fuel outlets which are open so as to be opposite the fuel electrode, and a fuel passage communicating with the fuel inlet and the fuel outlets in order to circulate the fuel from the fuel inlet to the fuel outlets, and the fuel passage is formed between the fuel inlet and the fuel outlets and comprises a plurality of branch passages that are adjusted in passage cross-sectional shape and branch structure as the branch passages extend from upstream to downstream between the fuel passage situated upstream and the fuel outlets and that have a desired channel resistance.07-29-2010
20100183944FUEL CELL, FUEL CELL-EQUIPPED VEHICLE, AND MEMBRANE ELECTRODE UNIT - The invention provides a fuel cell, which includes: an electrolyte; an anode that is placed on one side of the electrolyte and has a fuel gas consumption surface on which fuel gas is consumed; a cathode that is placed on the other side of the electrolyte; and a fuel gas passage having a first passaged for distributing fuel gas to previously set regions on the fuel gas supply surface, a second passage for supplying the distributed fuel gas to the regions, and a fuel gas supply portion for supplying fuel gas from the first passage to the second passage. The fuel cell consumes most of the supplied fuel gas in the regions on the fuel gas consumption surface. A fuel gas passage has a fuel gas leakage suppression portion for suppressing leakage of fuel gas between the first passage and the second passage.07-22-2010
20100178585FILM-ELECTRODE ASSEMBLY, FILM-ELECTRODE-GAS DIFFUSION LAYER ASSEMBLY HAVING THE SAME, SOLID STATE POLYMER FUEL CELL, AND FILM-ELECTRODE ASSEMBLY MANUFACTURING METHOD - A membrane-electrode assembly 07-15-2010
20100227250Rigidity & Inplane Electrolyte Mobility Enhancement for Fuel Cell Eletrolyte Membranes - Embodiments related to fuel cells and membrane-electrode assemblies for fuel cells are disclosed. In one disclosed embodiment, a membrane-electrode assembly includes a catalyzed anode material and a membrane disposed in face-sharing contact with the catalyzed anode material. The membrane comprises mutually interpenetrating first and second phases, the first phase supporting an ionic conduction through the membrane, and the second phase supporting a dimensional structure of the membrane. The membrane-electrode assembly also includes a catalyzed cathode material disposed in face-sharing contact with the membrane, opposite the catalyzed anode material. Two opposing flow plates are also provided, each flow plate configured to distribute a reactant gas to a catalyzed electrode material of the membrane-electrode assembly. Other embodiments provide variants on the membrane-electrode assembly and methods to make the membrane-electrode assembly.09-09-2010
20100227252PROTON-CONDUCTING POLYMER MEMBRANE COMPRISING POLYMERS CONTAINING PHOSPHONIC ACID GROUPS AND ITS USE IN FUEL CELLS - The present invention relates to a proton-conducting polymer membrane comprising polymers containing phosphonic acid groups which is obtainable by a process comprising the steps 09-09-2010
20100239946SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL09-23-2010
20110059386CATALYST, PRODUCTION PROCESS THEREFOR AND USE THEREOF - Catalysts of the invention are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability. The catalysts include a niobium oxycarbonitride represented by a compositional formula NbC03-10-2011
20110059385Polymer membrane composition for fuel cell, polymer membrane prepared therefrom, membrane-electrode assembly, fuel cell including the same, and associated methods - A polymer membrane composition for a fuel cell, a polymer membrane prepared therefrom, a membrane electrode assembly, a fuel cell including the same, and associated methods, the polymer membrane composition including a polymer, the polymer including a cation exchange group and a carbon double-bond-containing cross-linkable group, a (meth)acryl-based compound, the (meth)acryl-based compound including a cation exchange group, and a polymerization initiator.03-10-2011
20100151350POLYMER ELECTROLYTE MATERIAL AND MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL USING THE SAME - The present invention is to provide a polymer electrolyte material capable of causing interaction with a hydrocarbon polymer electrolyte and ensuring bonding ability between a polymer electrolyte membrane and a catalyst layer as well as having excellent gas permeability, and a membrane electrode assembly for fuel cell using the same. A polymer electrolyte material comprises at least a first repeating unit containing a Si—O bond which forms a main backbone and a second repeating unit containing an aromatic ring and a proton-conducting group, and a membrane electrode assembly for fuel cell comprises a polymer electrolyte membrane and/or a catalyst layer containing the polymer electrolyte material.06-17-2010
20100233573METHOD OF FABRICATING ELECTRODE CATALYST LAYERS WITH DIRECTIONALLY ORIENTED CARBON SUPPORT FOR PROTON EXCHANGE MEMBRANE FUEL CELL - A membrane electrode assembly (MEA) of the invention comprises an anode and a cathode and a proton conductive membrane therebetween, the anode and the cathode each comprising a patterned sheet of longitudinally aligned transition metal-containing carbon nanotubes, wherein the carbon nanotubes are in contact with and are aligned generally perpendicular to the membrane, wherein a catalytically active transition metal is incorporated throughout the nanotubes.09-16-2010
20100239949CELL FOR FUEL CELL, METHOD FOR PRODUCING THE SAME, AND GAS CHANNEL STRUCTURE FOR FUEL CELL - A cell for a fuel cell, comprising a membrane electrode assembly, expanded moldings that are laminated to both surfaces of the membrane electrode assembly and form gas channels, and separators that are laminated to the gas channel structures and separate the gases between adjacent cells, wherein each of the expanded moldings comprises a gas channel substrate formed from a metal material such as a titanium material or a stainless steel, a conductive layer that is formed from a conductor such as gold on a contact portion of the gas channel substrate that contacts the membrane electrode assembly or the separator, and a hydrophilic layer that is formed from a hydrophilic material such as a titanium oxide on the gas channel surface of the gas channel substrate.09-23-2010
20100216048METHOD FOR THE PRODUCTION OF A MEMBRANE ELECTRODE UNIT - The invention relates to a process for producing a membrane-electrode assembly comprising an anode catalyst layer (08-26-2010
20100255405DIRECT METHANOL FUEL CELL - A direct methanol fuel cell has at least one cell including a membrane electrode assembly. The membrane electrode assembly includes an anode, a cathode, and a polymer electrolyte membrane disposed between the anode and the cathode. The cathode includes a cathode catalyst layer in contact with the polymer electrolyte membrane, and a cathode diffusion layer in contact with the cathode catalyst layer. The cathode catalyst layer includes a cathode catalyst, a catalyst support on which the cathode catalyst is supported, and a polymer electrolyte. The weight ratio of the polymer electrolyte to the catalyst support is from 0.2 to 0.55. The cathode catalyst layer in a dry state has a porosity of 50% to 85%.10-07-2010
20100227248Membrane fuel cell with composite electrode plates - A membrane fuel cell includes a membrane electrode assembly sandwiched between two composite electrode plates. The membrane electrode assembly is sandwiched between the composite electrode plates, and includes an anode, a cathode, two catalyst layers sandwiched between the anode and the cathode, and a proton exchange membrane sandwiched between the catalyst layers. Each of the composite electrode plates includes at least one porous layer, at least one conductive layer attached to the porous layer, and at least one partition attached to the conductive layer.09-09-2010
20100239945MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE MEMBRANE FUEL CELL - A membrane electrode assembly according to the invention includes a solid polymer electrolyte membrane and an electrode joined to each of two sides of the solid polymer electrolyte membrane. The solid polymer electrolyte membrane is such that some or all of the protons included in the entire solid polymer electrolyte membrane, a band region, or a non-power generating region are ion exchanged with one or more cations selected from among complex cations, class four alkylammonium cations, and high valence cations. In addition or alternatively, the solid polymer electrolyte membrane includes an organo-metalloxane polymer obtained by impregnating the entire solid polymer electrolyte membrane, the non-power generating region, or the band region with an organo-metalloxane monomer that includes an ammonium cation or a class four ammonium cation at its terminus and then hydrolyzing and polycondensing the organo-metalloxane monomer.09-23-2010
20100239948FUEL CELL SOCKET AND FUEL CELL USING SAME - A fuel cell socket (09-23-2010
20100255402Carbon nanotubes, supported catalyst including the same, and fuel cell using the supported catalyst - A carbon nanotube, a method of preparing the same, a supported catalyst including the same, and a fuel cell using the supported catalyst are provided. The method of preparing the carbon nanotube includes: depositing a metal catalyst in single wall nanotubes and growing multi wall nanotubes over the single wall nanotubes using the metal catalyst. The carbon nanotubes of the present invention have satisfactory specific surface area and low surface resistance. Thus, the carbon nanotubes perform remarkably better than a conventional catalyst carrier. Accordingly, the carbon nanotubes, when used as a catalyst carrier of an electrode for a fuel cell, can improve the electrical conductivity of the fuel cell. In addition, a fuel cell employing the electrode has excellent efficiency and overall performance.10-07-2010
20100255404ELECTROCATALYST LAYER, MEMEBRANE ELECTRODE ASSEMBLY AND FUEL CELL - Electrocatalyst layers include an electrocatalyst having high oxygen reduction activity that is useful as an alternative material to platinum catalysts. Uses of the electrocatalyst layers are also disclosed.10-07-2010
20100221638ADHESIVE FOR FUEL CELL AND MEMBRANE-ELECTRODE ASSEMBLY PRODUCED USING THE SAME - An adhesive suitable for solid polymer fuel cells is provided that has sufficient bond durability, so that the solid polymer electrolyte membrane and the gas diffusion layer do not separate, even with the solid polymer electrolyte fuel cell repeatedly wetting and drying, and changing in dimension. An adhesive including a base compound, a cross-linking agent, an adhesion promoting agent, and a reaction catalyst is employed using a specific base compound having alkenyl groups, and a specific cross-linking agent having Si—H groups, in which the ratio of moles of the above Si—H group relative to moles of the above alkenyl group (moles of Si—H group/moles of alkenyl group) is adjusted to the range of 1.0 to 5.0.09-02-2010
20100196789CATALYST - A platinum alloy catalyst PtX, wherein the atomic percent of platinum in the bulk alloy is from 5 to 50 at %, the remaining being X, characterised in that the atomic percent of platinum at the surface of the alloy is from 10 to 80 at %, the remainder being X, provided that the at % of platinum at the surface of the alloy is at least 25% greater than the at % of platinum in the bulk alloy is disclosed.08-05-2010
20110027685FUEL CELL COMPRISING MULTI-TUBULAR SUPPORT - Disclosed herein is a fuel cell including a multi-tubular support, including: a multi-tubular support consisting of a plurality of tubular supports which are concentrically arranged and have different diameters; a connection support extending from the innermost tubular support to the outermost tubular support of the plurality of tubular supports; and a membrane electrode assembly formed on the multi-tubular support or the connection support. The fuel cell is advantageous in that, since it includes the multi-tubular support, a reaction area is enlarged, so that the efficiency of a fuel cell is increased, thereby to decreasing power generation costs.02-03-2011
20100221637FILM ELECTRODE ASSEMBLY - Provided is a film electrode assembly which can acquire unique information on a film electrode assembly even from the film electrode assembly alone. The film electrode assembly includes: a polymer electrolyte film; a pair of catalyst electrodes formed by a fuel pole and an air pole arranged to sandwich the polymer electrolyte film; and a unique information unit which contains unique information on the film electrode assembly. The unique information includes information on a catalyst composition of the catalyst electrode. More specifically, the unique information may be a content of Pt contained in the catalyst electrode.09-02-2010
20100297526CATALYST LAYERS TO ENHANCE UNIFORMITY OF CURRENT DENSITY IN MEMBRANE ELECTRODE ASSEMBLIES - Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst layers may have a uniform catalyst activity profile of a less active catalyst to achieve more uniform current density over the MEA active area. The catalyst layers may have a variable activity profile, such as an activity profile with a varying slope, to compensate for the inherent nonlinearities of catalyst utilization during operation of an electrochemical fuel cell. Desired variable catalyst activity profiles may be achieved, for example, by varying the catalyst loading across the MEA from inlet to outlet ports or by varying the surface area of the catalyst loading or by varying the surface area of the catalyst support elements.11-25-2010
20110129759ELECTRODE FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR FORMING MEMBRANE-ELECTRODE ASSEMBLY USING THE SAME - The present invention provides an electrode for a polymer electrolyte membrane fuel cell (PEMFC) and a method for forming a membrane-electrode assembly (MEA) using the same, in which carbon nanofibers are added to a catalyst layer to increase the mechanical strength of the catalyst layer and to maintain the thickness of the catalyst layer after operation for a long time, thus preventing a reduction in physical durability of the fuel cell, and cerium-zirconium oxide (CeZrO06-02-2011
20100297525FUEL CELL - A cell unit of a fuel cell includes a first separator, a first membrane electrode assembly, a second separator, a second membrane electrode assembly, and a third separator. Resin connecting sections are provided in the outer circumferential ends of the first separator, the second separator, and the third separator. A coupling pin is molded integrally with the resin connecting section of the first separator. A first hole and a second hole are formed on both sides of the coupling pin for selectively inserting a rebuilt pin into either of the first and second holes. A hole for inserting the coupling pin is formed at the center, and the first hole and the second hole are formed on both sides of the hole, in each of the resin connecting sections of the second and third separators.11-25-2010
20100304269Electrode For Fuel Cell And Method Of Preparing The Same And Membrane Electrode Assembly And Fuel Cell Comprising The Same - The present invention relates to an electrode for a fuel cell including a catalyst layer that includes a catalyst portion containing a plurality of first catalyst particles dispersed in an ionomer binder resin; and an ionomer portion containing a plurality of second catalyst particles dispersed in an ionomer binder resin, and having a lower concentration of catalyst particles than the catalyst portion, wherein the ionomer portion has a shape of a wall or plural pillars in the catalyst portion. The electrode for a fuel cell according to the present invention has a separate ionomer portion in the catalyst layer, and thus has excellent ion conductivity in an electrode layer and the remarkably improved reaction surface area to enhance the performance of the fuel cell.12-02-2010
20100304271ELECTROLYTE MATERIAL, LIQUID COMPOSITION AND MEMBRANE/ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL - It is to provide an electrolyte material with which an increase in the water content can be suppressed even when the ion exchange capacity of a polymer having repeating units based on a monomer having a dioxolane ring is high; and a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions.12-02-2010
20100304267METHOD TO ENHANCE THE DURABILITY OF CONDUCTIVE CARBON COATING OF PEM FUEL CELL BIPOLAR PLATES - A fuel cell component includes an electrode support material made with nanofiber materials of Titania and ionomer. A bipolar plate stainless steel substrate and a carbon-containing layer doped with a metal selected from the group consisting of platinum, iridium, ruthenium, gold, palladium, and combinations thereof.12-02-2010
20100167162MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCING THE SAME AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly comprising an anode catalyst layer and cathode catalyst layer placed each other, and a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer. The polymer electrolyte membrane comprises: a hydrocarbon-based polymer electrolyte, and the anode catalyst layer and cathode catalyst layer both comprise a catalyst-supported material, having at least one catalyst substance selected from among platinum and platinum-containing alloys and a support on which the catalyst substance is supported; and a polymer electrolyte. Either or both the anode catalyst layer and cathode catalyst layer have a catalyst-supporting ratio of 60 wt % or greater in the catalyst-supported material.07-01-2010
20110111321COMPOSITE PROTON CONDUCTING MEMBRANE WITH LOW DEGRADATION AND MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELLS - A small molecule or polymer additive can be used in preparation of a membrane electrode assembly to improve its durability and performance under low relative humidity in a fuel cell. Specifically, a method of forming a membrane electrode assembly comprising a proton exchange membrane, comprises providing an additive comprising at least two nitrogen atoms to the membrane electrode assembly.05-12-2011
20110008707Catalyst Layer for Fuel Cell Membrane Electrode Assembly, Fuel Cell Membrane Electrode Assembly Using the Catalyst Layer, Fuel Cell, and Method for Producing the Catalyst Layer - A catalyst layer for a fuel cell membrane electrode assembly includes a plurality of agglomerates, adjacent ones of the plurality of agglomerates contacting with each other with pores provided between said adjacent ones of the plurality of agglomerates, each of the plurality of agglomerates being formed by packing a plurality of catalysts each consisting of noble metal fine particles supported on a fiber-like support material, adjacent ones of the plurality of catalysts contacting with each other with pores provided between said adjacent ones of the plurality of catalysts, and each of the plurality of catalysts contacting with a plurality of catalysts other than said each catalyst at a plurality of contact points. This allows providing a catalyst layer, a fuel cell membrane electrode assembly, and a fuel cell, each of which has compact size and excellent power generation performance, and a method for producing the same.01-13-2011
20110008709CATALYST, PROCESS FOR PREPARING THE SAME, AND USES OF THE SAME - The present invention provides a catalyst which is not corroded in an acidic electrolyte or at a high potential, is excellent in durability and has high oxygen reduction activity. The catalyst of the present invention comprises an oxycarbonitride of titanium. The oxycarbonitride of titanium is preferably represented by the composition formula TiC01-13-2011
20110008706POLYMER COATING OF PEM FUEL CELL CATALYST LAYERS - A fuel cell (01-13-2011
20100167159POLYELECTROLYTE FILM, FILM-ELECTRODE ASSEMBLY, AND SOLID-POLYMER-TYPE FUEL CELL - A polymer electrolyte membrane comprising as a main ingredient a block copolymer which comprises, as its constituents, a polymer block (A) having as a main unit an aromatic vinyl compound unit and a polymer block (B) forming a flexible phase, and has ion-conducting groups on the polymer block (A), said aromatic vinyl compound unit being such that the hydrogen atom bonded to the α-carbon atom is non-replaced or replaced with an alkyl group or an aryl group optionally having substituent(s), and at least one of hydrogen atoms directly bonded to the aromatic ring is replaced with an alkyl group; and a membrane electrode assembly and a polymer electrolyte fuel cell both of which uses it. The polymer block (A) can have a restraining phase, and/or can be cross-linked. The electrolyte membrane is mild to the environment, has a high ion conductivity and good bonding properties to electrodes, is excellent in moldability, and is not easily influenced by methanol; and displays excellent performance in polymer electrolyte fuel cells, particularly direct methanol fuel cells.07-01-2010
20100183943MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL - In a membrane electrode assembly of the present invention, at least one of a catalyst layer of an oxygen electrode and a catalyst layer of a fuel electrode includes a supported catalyst supporting a metal catalyst containing a platinum group element, a proton conductive polymer electrolyte, and at least one selected from (a) a complex-forming agent having a ligand that forms coordinate bonds with ions of the platinum group element and forms a complex, the ligand containing oxygen as a coordinating atom, (b) a complex of the platinum group element, a ligand of the complex containing oxygen as a coordinating atom, and (c) carbon that has a BET specific surface area of 100 m07-22-2010
20100248075COMPOSITE MEMBRANE, FUEL CELL, AND METHOD FOR FABRICATING THE COMPOSITE MEMBRANES - Electro membrane assemblies are formed respectively in openings provided in a substrate. Each membrane electrode assembly is provided with an electrolyte membrane, an anode catalyst layer, and a cathode catalyst layer. A protective layer is provided on the substrate disposed between the adjacent anode catalyst layers. The other protective layer is provided on the substrate disposed between the adjacent cathode catalyst layers. The protective layer and the other protective layer preferably contain a resin whose number of C—F bonds is greater than that of the substrate.09-30-2010
20110033775FUEL CELL SEPARATOR AND FUEL CELL COMPRISING FUEL CELL SEPARATOR - A fuel cell separator of the present invention is a plate-shaped fuel cell separator including a reaction gas supply manifold hole (02-10-2011
20110033773Modified Hyper-Branched Polymer and Proton Exchange Membrane Applied with the Same, and Method for Manufacturing the Proton Exchange Membrane - A proton exchange membrane comprising modified hyper-branched polymer is disclosed. The proton exchange membrane includes 85-90 wt % of sulfonated tetrafluorethylene copolymer and 15-10 wt % of modified hyper-branched polymer. The modified hyper-branched polymer comprises the bismaleimide (BMI)-based hyper-branched polymer, and parts of the chain ends of the hyper-branched polymer are sulfonated by the sulfonic compound. Also, the modified hyper-branched polymer and sulfonated tetrafluorethylene copolymer are interpenetrated to form an interpenetrating polymer. Furthermore, the modification step could be performed before or after forming the interpenetrating polymer. For example, the sulfonation is proceeded after forming the interpenetrating polymer. Alternatively, the sulfonation of the hyper-branched polymer could be proceeded before the formation of the interpenetrating polymer.02-10-2011
20110033774POLYMER ELECTROLYTE COMPOSITION AND METHOD FOR PREPARING THE SAME, AND FUEL CELL - A polymer electrolyte composition comprising a mixed solvent including a plurality of solvents with boiling points differing from one another, and a block copolymer-type polymer electrolyte comprising a block having an ion-exchange group and a block having substantially no ion-exchange groups, wherein the mixed solvent is a good solvent of the block copolymer-type polymer electrolyte, and a solvent A having the highest boiling point of the solvents included in the mixed solvent is a poor solvent of the block copolymer-type polymer electrolyte and good solvent of the block having the ion-exchange group.02-10-2011
20110244362CATALYST FOR FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY INCLUDING SAME, AND FUEL CELL SYSTEM INCLUDING SAME - A catalyst for a fuel cell including a carrier and an active metal dispersion that is supported in the carrier is disclosed. The catalyst may have a dispersity (Dp) represented by General Formula 1 and that ranges from between about 0.01 to about 1.0.10-06-2011
20110143254FUEL CELL WITH LAYERED ELECTRODE - One embodiment includes at least one of the anode and cathode of a fuel cell comprises a first layer and a second layer in intimate contact with each other. Both the first layer and the second layer comprise a catalyst capable of catalyzing an electrochemical reaction of a reactant gas. The second layer has a higher porosity than the first layer. A membrane electrode assembly (MEA) based on the layered electrode configuration and a process of making a fuel cell are also described.06-16-2011
20100221639Membrane Electrode Assembly, Manufacturing Method Thereof and Fuel Cell - A manufacturing method of MEA of the present invention includes coating a catalyst ink for first electrode catalyst layer containing an electron conducting material loading a catalyst, a polymer electrolyte, and a solvent on a substrate to form a coated layer; removing the solvent in the coated layer to form at least two types of first electrode catalyst layers having different polymer electrolyte content ratios; coating an electrolyte ink containing the polymer electrolyte and the solvent on the first electrode catalyst layer to form a coated layer; removing the solvent in the coated layer to form a polymer electrolyte layer; coating a catalyst ink for second electrode catalyst layer containing the electron conducting material loading the catalyst, the polymer electrolyte, and the solvent on the polymer electrolyte layer to form a coated layer; and removing the solvent in the coated layer to form a second electrode catalyst layer.09-02-2010
20100216051PROTON-CONDUCTING POLYMER MEMBRANE COMPRISING POLYAZOLE BLENDS AND ITS USE IN FUEL CELLS - The present invention relates to a proton-conducting polymer membrane which comprises polyazole blends and is obtainable by a process comprising the steps 08-26-2010
20100216049ELECTRODE CATALYST COMPOSITION, ELECTRODE, AND FUEL CELL AND MEMBRANE-ELECTRODE ASSEMBLY EACH COMPRISING THE ELECTRODE - Provided are an electrode to enhance the power generation efficiency in a fuel cell, in particular a single-chamber solid electrolyte fuel cell, and such an electrode. The electrode of the present invention comprises ΔEh, represented by the following formula (08-26-2010
20110081596Novel Electrode Design for Low Temperature Direct-Hydrocarbon Solid Oxide Fuel Cells - In certain embodiments of the present disclosure, a solid oxide fuel cell is described. The solid oxide fuel cell includes a hierarchically porous cathode support having an impregnated cobaltite cathode deposited thereon, an electrolyte, and an anode support. The anode support includes hydrocarbon oxidation catalyst deposited thereon, wherein the cathode support, electrolyte, and anode support are joined together and wherein the solid oxide fuel cell operates a temperature of 600° C. or less.04-07-2011
20110097644FUEL CELL AND METHOD OF MANUFACTURING FUEL CELL - A small fuel cell capable of realizing stable output and a method of manufacturing the same are provided. A fuel cell 04-28-2011
20110070523SOLID POLYMER ELECTROLYTE MEMBRANE, METHOD FOR PRODUCING THE SAME, MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL, AND FUEL CELL - Disclosed is a solid polymer electrolyte membrane obtained by graft-polymerizing one or more kinds of radically polymerizable monomers to a resin membrane which is irradiated with radiation. This solid polymer electrolyte membrane is characterized in that at least one kind of the radically polymerizable monomers is a monofunctional monomer having one alkenyl group and a plurality of aromatic rings. By using a monofunctional monomer having one alkenyl group and a plurality of aromatic rings as at least one kind of the radically polymerizable monomers for radiation graft polymerization, there can be obtained a solid polymer electrolyte membrane having good oxidation resistance. When this solid polymer electrolyte membrane is used as an electrolyte membrane of a fuel cell, the fuel cell can have a long life since a grafted polymer chain is hardly decomposed.03-24-2011
20100129728ALLOY CATALYST FOR FUEL CELL CATHODE - An alloy catalyst for oxygen reduction reaction in a polymer electrolyte membrane fuel cell, comprising at least Pd, Co, and Au, wherein each content of Pd, Co, and Au satisfies 20 atomic %≦Pd<70 atomic %, 30 atomic %≦Co<70 atomic %, and 0 atomic %05-27-2010
20110076593DIRECT OXIDATION FUEL CELL - A direct oxidation fuel cell including at least one cell, the cell being a stacked body including: a membrane electrode assembly including an anode, a cathode, and an electrolyte membrane disposed between the anode and the cathode; an anode-side separator having a fuel flow channel for supplying a liquid fuel to the anode; and a cathode-side separator having an oxidant flow channel for supplying an oxidant to the cathode, in which the anode-side separator includes a first region including an upstream half of the fuel flow channel and a second region including a downstream half of the fuel flow channel, the anode includes an anode catalyst layer in contact with the electrolyte membrane and an anode diffusion layer in contact with the anode-side separator, the anode catalyst layer includes an anode catalyst and a polymer electrolyte, the anode catalyst layer includes an upstream-side region facing the first region and a downstream-side region facing the second region, and the content of the polymer electrolyte in the anode catalyst layer is higher at the upstream-side region than at the downstream-side region.03-31-2011
20100279197Membrane-electrode binder having dual electrode, method of manufacturing the binder, and fuel cell comprising the same - A membrane-electrode binder for a fuel cell, a method of manufacturing the binder, and a fuel cell comprising the binder are provided, in which the membrane-electrode binder comprises a dual electrode constituted by a first electrode and a second electrode in a two-layer form, and a polymer electrolyte membrane disposed on the dual electrode, the dual electrode comprising an electrode substrate and a catalyst layer formed thereon. In detail, the membrane-electrode binder comprises the dual electrode that is constituted by the first electrode obtained by using a PBI-based binder, the second electrode obtained by using a PTFE-based binder, and an inorganic acid doped PBI-based polymer electrolyte membrane disposed on the dual electrode and coming in contact with the first electrode. In the configuration of the dual electrode, the PBI-based binder used for manufacturing the first electrode contributes to enhancing an adhesive strength with the inorganic acid doped PBI-based polymer electrolyte membrane, and the PTFE-based binder used for manufacturing the second electrode contributes to suppressing the emission of an inorganic acid from the inorganic acid doped PBI-based polymer electrolyte membrane, together improving the performance of a fuel cell.11-04-2010
20110045382MEMBRANE WITH INCREASED DURABILITY FROM PARTIAL ION EXCHANGE - An ion exchange membrane (02-24-2011
20110045381Hydrocarbon PEM Membranes with Perfluorosulfonic Acid Groups for Automotive Fuel Cells - A solid electrochemical cell membrane composition comprises a hydrocarbon polymeric main chain and a perfluorinated superacid side group. A method of producing the membrane composition is also disclosed.02-24-2011
20100310965MEMBRANE-ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL - A membrane-electrode assembly for polymer electrolyte fuel cells comprising a polymer electrolyte membrane and two gas diffusion electrodes being bonded to the membrane so that the membrane can be between them, in which assembly each gas diffusion electrode is comprised of an electrode catalyst layer and a gas diffusion layer, intermediate layer(s) being an ion conductor is/are arranged between the electrode catalyst layer(s) and the membrane, the ion conductor mainly comprises a block copolymer comprising a polymer block (A) having ion-conductive groups and a polymer block (B) having no ion-conductive group, both blocks phase-separate from each other, (A) forms a continuous phase, and the contact part(s) of the intermediate layer(s) with the polymer electrolyte membrane and the contact part(s) of the intermediate layer(s) with the electrode catalyst layer(s) are comprised of polymer block (A) having ion-conductive groups; and a polymer electrolyte fuel cell wherein the assembly is used. By the invention, a membrane-electrode assembly and a fuel cell are provided which are economical, environment-friendly, good in moldability, and small in interface resistance and excellent in power generation efficiency.12-09-2010
20100304268TERNARY ALLOY CATALYSTS FOR FUEL CELLS - Alloy catalysts have the formula of Pt12-02-2010
20100304270AQUEOUS POLYVINYLIDENE FLUORIDE COMPOSITION - The invention relates to an aqueous fluoropolymer, and preferably polyvinylidene fluoride (PVDF), composition for manufacturing electrodes for use in non-aqueous-type electrochemical devices, such as batteries and electric double layer capacitors. The composition contains aqueous PVDF binder, and one or more powdery electrode-forming materials. In one embodiment, the composition is free of fluorinated surfactant In another embodiment, one or more fugitive adhesion promoters are added. The electrode formed from the composition of the invention exhibits interconnectivity and irreversibility that is achieved from the use of aqueous PVDF binder.12-02-2010
20100261091POLYSULFONE POLYMERS AND RELATED POLYMER ELECTROLYTE MEMBRANES AND FUEL CELLS - Polysulfone based polymer comprising a repeat unit represented by the following Chemical Formula 1 is provided:10-14-2010
20100297524MEMBRANE ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL - A membrane electrode assembly for a polymer electrolyte fuel cell has a polymer electrolyte membrane, a catalytic layer and a diffusion layer of anode formed on one side of the membrane, a catalytic layer and a diffusion layer of cathode formed on the other side of the membrane, in which the cathode catalytic layer includes at least proton conductive material and platinum/platinum alloy powder not containing supporting carbon, the cathode diffusion layer comprises carbon base material, a cathode dividing layer is arranged at a position contacting with the catalytic layer between the catalytic layer and the diffusion layer of cathode side, the cathode dividing layer contains at least electron conductive material, the electron conductive material is one of metallic oxide or graphitized carbon of which index of graphitization degree R value (ratio of peak intensities of G band and D band I11-25-2010
20100297523Fluoroionomer liquid composition - A liquid composition comprising: 11-25-2010
20100261092FUEL CELL - A fuel cell includes a membrane electrode assembly includes an anode, a cathode and an electrolyte membrane interposed between the anode and the cathode, an anode conductive layer which is in contact with the anode, a cathode conductive layer which is in contact with the cathode, and a fuel supply mechanism which is disposed on the anode side of the membrane electrode assembly to supply fuel to the anode. The membrane electrode assembly includes a shape formed convexly toward the anode side in a separate condition.10-14-2010
20110020727Protective and Precipitation Layers for PEM Fuel Cell - A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.01-27-2011
20110020728POLYELECTROLYTE AND PROCESS FOR PRODUCING THE POLYELECTROLYTE - The present invention provides an electrolyte having high conductivity even under high-temperature low-humidification conditions (e.g. at a temperature of 100 to 120° C. and a humidity of 20 to 50% RH) and thereby makes it possible to realize a higher performance fuel cell. The present invention is a fluoropolymer electrolyte having an equivalent weight (EW) of not less than 250 but not more than 700 and a proton conductivity of not lower than 0.10 S/cm as measured at a temperature of 110° C. and a relative humidity of 50% RH and comprising a COOZ group- or SO01-27-2011
20110020731POLYMER ELECTROLYTE COMPOSITION - A polymer electrolyte composition comprising a component (A) and a component (B) described below, wherein if the equivalent weight of cation exchange groups in the component (A) is termed Ic, and the equivalent number of anion exchange groups in the component (B) is termed Ia, then the equivalent weight ratio represented by Ic/Ia is from 1 to 10,000.01-27-2011
20110053040CATALYST, PRODUCTION PROCESS THEREFOR AND USE THEREOF - Catalysts of the invention are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability. A catalyst includes a metal oxycarbonitride containing niobium and at least one metal M selected from the group consisting of tin, indium, platinum, tantalum, zirconium, copper, iron, tungsten, chromium, molybdenum, hafnium, titanium, vanadium, cobalt, manganese, cerium, mercury, plutonium, gold, silver, iridium, palladium, yttrium, ruthenium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and nickel.03-03-2011
20110053038CO(II)TETRAMETHOXYPHENYLPORPHYRIN ADDITIVE TO PFSA PEMS FOR IMPROVED FUEL CELL DURABILITY - An ion conducting membrane for fuel cell applications includes an ion conducting polymer and a porphyrin-containing compound at least partially dispersed within the ion conducting polymer. The ion conducting membranes exhibit improved performance over membranes not incorporating such porphyrin-containing compounds.03-03-2011
20110053037BIFUNCTIONAL MEMBRANE FOR USE IN MEMBRANE ELECTRODE ASSEMBLIES WITH INTEGRATED WATER VAPOR TRANSFER ZONES - A fuel cell includes a first flow field plate defining at least one flow field channel. A cathode catalyst layer is disposed over at least a portion of the first flow field plate. A polymeric ion conducting membrane is disposed over cathode catalyst layer. An anode catalyst layer is disposed over the polymeric ion conducting membrane. Finally, a second flow field plate defining at least one flow field channel is disposed over the anode catalyst layer. The polymeric ion conducting membrane extends beyond the cathode catalyst layer and the anode catalyst layer such that the fuel cell has at least one peripheral region with the polymeric catalyst layer interposed between first flow field plate and the second flow field plate without the cathode catalyst layer and the anode catalyst layer.03-03-2011
20110053036Polyelectrolyte Membranes Made Of Poly(Perfluorocyclobutanes) With Pendant Perfluorosulfonic Acid Groups and Blends With Poly(Vinylidene Fluoride) - A polymer useful as an ion conductor in fuel cells includes a perfluorocyclobutyl moiety and pendant PFSA side groups. The polymer is made by a variation of the Ullmann reaction. Ion conducting membranes incorporating the polymer are provided.03-03-2011
20110053035Sodium Stannate Additive to Improve the Durability of PEMS for H2/Air Fuel Cells - An ion conducting membrane for fuel cell applications includes an ion conducting polymer and a tin-containing compound at least partially dispersed within the ion conducting polymer. The ion conducting membranes exhibit improved performance over membranes not incorporating such tin-containing compounds.03-03-2011
20110027688ELECTROLYTE MATERIAL, LIQUID COMPOSITION AND MEMBRANE/ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL - It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions, and an electrolyte material suitable for a catalyst layer of the membrane/electrode assembly.02-03-2011
20110027687ELECTROLYTE MATERIAL, LIQUID COMPOSITION AND MEMBRANE/ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL - It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions; and an electrolyte material having a low water content, suitable for a catalyst layer of a membrane/electrode assembly.02-03-2011
20100330452Layered Electrodes and Membrane Electrode Assemblies Employing the Same - According to at least one aspect of the present invention, a layered catalyst having an active area is provided. In at least one embodiment, the layered electrode includes a first catalyst layer having a first noble metal concentration and a first ionomer concentration, and a second catalyst layer disposed next to the first catalyst layer, the second catalyst layer having a second noble metal concentration different from the first noble metal concentration and a second ionomer concentration different from the first ionomer concentration. In at least another embodiment, the metallic alloy includes a metallic alloy of platinum, nickel, and cobalt.12-30-2010
20100285389FUEL CELL - The present invention relates to a fuel cell including a plurality of unit membrane electrode assemblies having an electrolyte membrane sandwiched by fuel electrodes and air electrodes. In recent years, attempts have been made to use fuel cells as power sources of portable electronic devices, and if the fuel cell can be made compact, it becomes a remarkably advantageous power supply system for portable electronic devices. Generally, in the fuel cell, the plural unit membrane electrode assemblies are electrically connected in series, but the serial connection of the unit membrane electrode assemblies different in output has a problem such as the deterioration due to polarity reversal occurring in the unit membrane electrode assembly with a low output. The present invention solves the above problem by the structure in which the fuel cell includes: the membrane electrode assembly group in which the plural unit membrane electrode assemblies are arranged two-dimensionally so as to be a predetermined interval apart from each other in a circumferential direction around a given center point, with the same electrodes being set on the same side; and a fuel supply mechanism disposed on the fuel electrode side of the membrane electrode assembly group and supplying a fuel to the fuel electrodes.11-11-2010
20100285391ELECTROLYTE-ELECTRODE ASSEMBLY AND METHOD FOR MANUFACTURING THE SAME - An electrolyte-electrode assembly (MEA) includes: an electrolyte; an anode side electrode and a cathode side electrode formed so as to sandwich the electrolyte via intermediate layers. The anode side electrode has a thickness set to 1 μm, for example. A method for manufacturing the electrolyte-electrode assembly, i.e., the MEA includes a step for forming the anode side electrode by sputtering.11-11-2010
20100285390CATALYTIC MEMBRANES FOR CO OXIDATION USED IN FUEL CELLS - A fuel cell of the present invention comprises a cathode and an anode, one or both of the anode and the cathode including a catalyst comprising a bundle of longitudinally aligned graphitic carbon nanotubes including a catalytically active transition metal incorporated longitudinally and atomically distributed throughout the graphitic carbon walls of said nanotubes. The nanotubes also include nitrogen atoms and/or ions chemically bonded to the graphitic carbon and to the transition metal. Preferably, the transition metal comprises at least one metal selected from the group consisting of Fe, Co, Ni, Mn, and Cr.11-11-2010
20110097643INTEGRATED PEM FUEL CELL - An integrated PEM fuel cell includes bipolar plate assemblies that utilize fiber groups that extend from the surfaces of gas impermeable plates to terminate in uncoated tips facing adjacent tips to form anodes and cathodes of an MEA assembly. The catalyst support and catalyst can be applied to the tips as beads or thin layers and joined with a membrane. The assembly can use a unified seal and include collector plates at the ends of the stacks, using similar fiber construction.04-28-2011
20110262836LITHIUM-AIR CELL INCORPORATING LITHIUM ALUMINUM GERMANIUM PHOSPHATE CATHODE - A lithium-air cell is provided which incorporates a cathode comprised of a lithium aluminum germanium phosphate (LAGP) glass-ceramic material for facilitating an oxygen reduction reaction. The lithium-air cell further includes a lithium anode and a solid electrolyte which may be in the form of a membrane comprising LAGP glass-ceramic and/or polymer ceramic materials.10-27-2011
20110256468ELECTRODE CATALYST MATERIAL AND METHOD OF MANUFACTURING THE SAME - The invention provides an electrode catalyst material in which a resistance loss is reduced by enhancing an electric conductivity as a whole of an electrode catalyst as well as suppressing a corrosion and a disappearance by a catalyst metal in a conductive catalyst support so as to prevent a dropout and an aggregation of a catalyst metal particle, and a method of manufacturing the same. The electrode catalyst material in accordance with the present invention is an electrode catalyst material for a fuel cell having a catalyst metal particle and a carbon support supporting the catalyst metal particle, in which a carbon support protection layer including a metal element is formed in a coating manner on a surface of the carbon support, a silicone is included at 20 atomic % or more in the metal element contained in the carbon support protection layer, and the silicone exists in a state of an oxide and a carbide.10-20-2011
20100323271MEMBRANE-ELECTRODE ASSEMBLY AND FUEL CELL HAVING THE SAME - A membrane-electrode assembly (12-23-2010
20100330454POLYMER ELECTROLYTE COMPOSITION - A polymer electrolyte composition comprising a component (A) defined below, and at least one kind of a component (B) selected from the group consisting of a component (B1) defined below and a component (B2) defined below: (A) a polymer electrolyte; (B1) a compound having a degree of affinity for platinum of 10% or more; and (B2) a compound having at least two kinds of atoms having an unshared electron pair, selected from the group consisting of a nitrogen atom, a phosphorus atom, and a sulfur atom in the molecule.12-30-2010
20110256467Cobalt(II) Tetramethoxyphenylporphyrin (CoTMPP) Ionomer Stabilization to Prevent Electrode Degradation - A membrane/electrode assembly for fuel cell applications includes an ion conducting polymer and a porphyrin-containing compound at least partially dispersed within the ion conducting polymer, a first electrode and a second electrode. At least one of the first and second electrodes also includes the porphyrin-containing compound. The membrane/electrode assembly exhibits improved performance over membrane/electrode assembly not incorporating such porphyrin-containing compounds.10-20-2011
20110136040SULFONATED POLY(ARYLENE ETHER) COPOLYMERS AND RELATED POLYMER ELECTROLYTE MEMBRANES AND FUEL CELLS - The present invention relates to a sulfonated poly(arylene ether) copolymer, a manufacturing method thereof and a polymer electrolyte membrane for fuel cell using the same.06-09-2011
20100209806MEMBRANE ELECTRODE ASSEMBLY - Membrane electrode assembly (MEA) with an anode, which contains at least two catalytically active metals which are not alloyed with one another, wherein at least one first catalytically active metal (A) oxidizes ethanol and at least one second catalytically active metal (B) oxidizes acetaldehyde.08-19-2010
20100159350MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCTION THEREOF, AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly for a solid polymer fuel cell, which comprises a mutually opposing anode catalyst layer and cathode catalyst layer with a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer, wherein the anode catalyst layer and cathode catalyst layer each contain a catalyst and a hydrocarbon-based polymer electrolyte with an ion-exchange group. If the ion-exchange group density of the anode catalyst layer is represented as α [μeq/cm06-24-2010
20100196786Composite for Fuel Cell Membrane Based on Organomodified Inorganic Particles and Method for Preparing Same - The invention relates to proton-conducting composites comprising a polymer matrix within which inorganic particles are dispersed, grafted to the surface of which particles are polymers comprising repeat units that comprise at least one acid proton-exchange group, optionally in the form of salts, or a precursor group of said acid group, said particles being chosen from particles of zeolites, of zirconium phosphates or phosphonates, or of oxides. Application to the field of fuel cells.08-05-2010
20100196790MEMBRANE AND ELECTRODE ASSEMBLY AND FUEL CELL - Provided is a membrane and electrode assembly capable of maintaining the moisture content of a catalyst layer on a cathode electrode side within a suitable range. A membrane and electrode assembly comprising a pair of electrodes and an electrolyte membrane provided between the electrodes, wherein the side of each electrode adjacent to the electrolyte membrane is formed by a catalyst layer, and at least one catalyst layer comprises silica fine particles having a hydrocarbon group or a fluorine-containing organic group in the surface thereof.08-05-2010
20100196791PROTON CONDUCTIVE MATERIAL, METHOD FOR MANUFACTURING PROTON CONDUCTIVE MATERIAL, AND MEMBRANE-ELECTRODE ASSEMBLY CONTAINING PROTON CONDUCTIVE MATERIAL - A proton conductive material n which hollow inorganic fine particles that have through holes on a surface of the hollow inorganic fine particles, that are filled with an electrolyte resin. In addition, a membrane-electrode assembly which has an anode electrode provided on one surface side of a solid polymer electrolyte membrane and including an anode catalyst layer, and a cathode electrode provided on the other surface side of the solid polymer electrolyte membrane and including a cathode catalyst layer, wherein at least the anode catalyst layer from among the pair of catalyst layers includes the proton conductive material.08-05-2010
20100196792POLYMER ELECTROLYTE COMPOSITION AND FUEL CELL - A polymer electrolyte composition obtained by mixing a plurality of ion-conductive polymers, wherein if the ion-conductive polymer having that is highest in ion exchange capacity among the plurality of ion-conductive polymers is termed first ion-conductive polymer, and the ion-conductive polymer that is lowest in ion exchange capacity is termed second ion-conductive polymer, then 08-05-2010
20100196783ELECTROLYTE MEMBRANE, METHOD FOR MANUFACTURING THE SAME, AND MEMBRANE ELECTRODE ASSEMBLY HAVING THE ELECTROLYTE MEMBRANE - To obtain an electrolyte membrane that can prevent large stress formed in the membrane due to its expansion attributable to moisturization upon operation of a fuel cell and that allows the manufacturing of a membrane electrode assembly having high performance and durability. An electrolyte membrane 08-05-2010
20100196781REINFORCED ELECTROLYTE MEMBRANE FOR FUEL CELL, PRODUCTION METHOD THEREOF, MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL, AND SOLID POLYMER FUEL CELL COMPRISING THE SAME - A reinforced electrolyte membrane for a fuel cell which is reinforced by a porous membrane, characterized by containing void portions in a joining portion between the surface of the porous membrane and/or pore surface and the electrolyte for buffering swelling when water is contained. This reinforced electrolyte membrane for a fuel cell has improved dimensional stability even if the electrolyte swells.08-05-2010
20100196784FUEL CELL, FUEL CELL METAL SEPARATOR, AND FUEL CELL MANUFACTURING METHOD - A fuel cell having a seal structure that exhibits excellent sealing properties and corrosion resistance. By providing a resin layer on at least a portion of an adhesion region where a metal separator contacts an adhesive, a fuel cell having a seal structure that exhibits excellent sealing properties and corrosion resistance can be provided.08-05-2010
20100196785CATALYST INK, METHOD FOR PRODUCING CATALYST INK, METHOD FOR PRODUCING MEMBRANE-ELECTRODE ASSEMBLY, MEMBRANE-ELECTRODE ASSEMBLY PRODUCED BY THE METHOD, AND FUEL CELL - It is an object of this invention to provide a catalyst ink which allows formation of catalyst layers that can adequately improve durability of fuel cells. The catalyst ink of the invention is a catalyst ink for formation of a fuel cell catalyst layer, comprising a catalyst substance, a solvent and an aromatic polymer compound having a phosphorus atom-containing functional group, wherein at least the aromatic polymer compound is dispersed, and not dissolved, in the solvent.08-05-2010
20100196780PROTECTING A PEM FUEL CELL CATALYST AGAINST CARBON MONOXIDE POISONING - An anode structure comprises an array of carbon nanotubes having a diffusion side and a membrane side, and catalyst particles interspersed on inner surfaces of the membrane side of the carbon nanotubes. The carbon nanotubes have an average diameter greater than the size of the hydrogen molecule but smaller than the size of the carbon monoxide molecule. Thus, hydrogen flowing toward the catalyst particles interspersed inside the carbon nanotubes are able to go through, while the flow of trace amounts of carbon monoxide contained in the hydrogen is blocked, preventing the poisoning of the catalyst particles by the carbon monoxide. A fuel cell utilizing the anode structure and a method for manufacturing the anode structure are also disclosed.08-05-2010
20100190086CATALYST LAYER - A porous catalyst layer formed from discrete particles of unsupported metal, wherein at least 80%, suitably at least 90%, of the discrete particles have a mass of from 1 to 1000 zeptograms, and wherein the catalyst layer has a metal volume fraction of less than 30% and a metal loading of less than 0.09 mg/cm07-29-2010
20110189584POLYMER AND CROSS-LINKED POLYMER COMPOSITION, ELECTRODE AND ELECTROLYTE MEMBRANE INCLUDING CROSS-LINKED POLYMER, AND FUEL CELL INCLUDING ELECTRODE AND ELECTROLYTE MEMBRANE - 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.08-04-2011
20100159349Membrane Electrode Assemblies - A flexible MEA comprises an integral assembly of electrode, catalyst and ionomeric membrane material.06-24-2010
20110117472POLYMER DISPERSANT ADDITION TO FUEL CELL ELECTRODE INKS FOR IMPROVED MANUFACTURABILITY - An ink composition for forming a fuel cell electrode includes a catalyst composition, a polymeric binder, a polymeric dispersant, and a solvent. The polymeric dispersant includes a perfluorocyclobutyl-containing polymer.05-19-2011
20110020729CATALYST, PRODUCTION PROCESS THEREFOR AND USE THEREOF - Catalysts of the present invention are not corroded in acidic electrolytes or at high potential and have excellent durability and high oxygen reducing ability.01-27-2011
20100190085MEMBRANE-ELECTRODE ASSEMBLY, METHOD FOR PRODUCING THE SAME AND SOLID POLYMER FUEL CELL - A membrane-electrode assembly (MEA) comprising an anode catalyst layer and cathode catalyst layer placed opposite each other, and a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer, as well as a fuel cell comprising the same. Either or both the anode catalyst layer and cathode catalyst layer comprise: a catalyst-supported material, having at least one catalyst substance selected from among platinum and platinum-containing alloys and a support on which the catalyst substance is supported; and a hydrocarbon-based polymer electrolyte. The catalyst-supporting ratio of the catalyst-supported material is 60 wt % or greater.07-29-2010
20120148937DURABLE FUEL CELL MEMBRANE ELECTRODE ASSEMBLY WITH COMBINED ADDITIVES - A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane comprising a first polymer electrolyte and at least one manganese compound; and one or more electrode layers comprising a catalyst and at least one cerium compound. The membrane electrode assembly demonstrates an unexpected combination of durability and performance.06-14-2012
20120148936INORGANIC AND/OR ORGANIC ACID-CONTAINING CATALYST INK AND USE THEREOF IN THE PRODUCTION OF ELECTRODES, CATALYST-COATED MEMBRANES, GAS DIFFUSION ELECTRODES AND MEMBRANE ELECTRODE UNITS - Catalyst ink comprising one or more catalyst materials, a solvent component and at least one acid, an electrode comprising at least one catalyst ink according to the present invention, a membrane-electrode assembly comprising at least one electrode according to the invention or comprising at least one catalyst ink according to the present invention, a fuel cell comprising at least one membrane-electrode assembly according to the invention and also a process for producing a membrane-electrode assembly according to the present invention.06-14-2012
20120301811Solid Electrolyte Film, and Method for Producing Same - A solid electrolyte film according to the present invention includes a resin having a repeating unit of the general formula (1) containing a bis(perfluoroalkanesulfonyl)methide moiety:11-29-2012
20120308914ADVANCED MEMBRANE ELECTRODE ASSEMBLIES FOR FUEL CELLS - A method of preparing advanced membrane electrode assemblies (MEA) for use in fuel cells. A base polymer is selected for a base membrane. An electrode composition is selected to optimize properties exhibited by the membrane electrode assembly based on the selection of the base polymer. A property-tuning coating layer composition is selected based on compatibility with the base polymer and the electrode composition. A solvent is selected based on the interaction of the solvent with the base polymer and the property-tuning coating layer composition. The MEA is assembled by preparing the base membrane and then applying the property-tuning coating layer to form a composite membrane. Finally, a catalyst is applied to the composite membrane.12-06-2012
20110318670FUEL CELL MEA (MEMBRANE ELECTRODE ASSEMBLY) WITH A BORDER PACKAGING STRUCTURE - A fuel cell MEA with a border packaging structure. A catalyst coated membrane includes an anode catalyst layer, a cathode catalyst layer, and a proton exchange membrane disposed therebetween. An anode border packaging member is connected between the anode catalyst layer and an anode gas diffusion layer. A cathode border packaging member is connected between the cathode catalyst layer and a cathode gas diffusion layer and adheres to the anode border packaging member at outer edges of the catalyst coated membrane. The anode border packaging member and the cathode border packaging member respectively include two adhesive layers and a substrate layer formed therebetween. The anode border packaging member and the cathode border packaging member are respectively connected between the anode catalyst layer and the anode gas diffusion layer and between the cathode catalyst layer and the cathode gas diffusion layer by the adhesive layers.12-29-2011
20100291467FABRICATION OF CATALYST COATED DIFFUSION MEDIA LAYERS CONTAINING NANOSTRUCTURED THIN CATALYTIC LAYERS - A method of transferring nanostructured thin catalytic layers to a gas diffusion layer and thus making a catalyst coated diffusion media is described. The method includes treating the gas diffusion layer with a temporary adhesive to temporarily increase the adhesion strength within the microporous layer and to carbon fiber paper substrate, transferring the nanostructured thin catalytic layer to the microporous side of a gas diffusion media layer. The nanostructured thin catalytic layer can then be further processed, including adding additional components or layers to the nanostructured thin catalytic layer on the gas diffusion media layer. Preparation of catalyst coated diffusion media and a catalyst coated diffusion media based membrane electrode assembly (MEA) are also described.11-18-2010
20100196782POLYMER ELECTROLYTE MATERIAL, POLYMER ELECTROLYTE MOLDED PRODUCT USING THE POLYMER ELECTROLYTE MATERIAL, AND METHOD FOR MANUFACTURING THE POLYMER ELECTROLYE MOLDED PRODUCT, MEMBRANE ELECTRODE COMPOSITE, AND SOLID POLYMER FUEL CELL - It is an object of the present invention to provide a polymer electrolyte material which has excellent proton conductivity even under the conditions of a low humidity or a low temperature and is excellent in mechanical strength and fuel barrier properties, and which moreover can achieve high output, high energy density and long-term durability in forming a polymer electrolyte fuel cell therefrom, and a polymer electrolyte form article using the same and a method for producing the same, a membrane electrode assembly and a polymer electrolyte fuel cell, each using the same.08-05-2010
20120009501METHODS OF MANUFACTURING PROTON CONDUCTIVE SOLID OXIDE FUEL CELL AND PROTON CONDUCTIVE SOLID OXIDE FUEL CELLS MANUFACTURED BY USING THE METHODS - A method of manufacturing a proton conductive solid oxide fuel cell, the method including: forming a metallic mask layer having nanoholes on a first surface of a substrate; selectively etching the first surface of the substrate using the metallic mask layer; depositing a first membrane electrode assembly (MEA) member on the etched first surface of the substrate; etching an opposing second surface of the substrate; and forming second and third MEA members on the first MEA member.01-12-2012
20110008708REINFORCED ELECTROLYTE MEMBRANE FOR FUEL CELL, FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY, AND SOLID POLYMER ELECTROLYTE FUEL CELL COMPRISING THE FUEL CELL MEMBRANE-ELECTRODE ASSEMBLY - The present invention provides a reinforced electrolyte membrane for fuel cell comprising a porous substrate impregnated with a polyelectrolyte liquid dispersion, wherein either the maximum tensile strength in the machine direction (for sheet processing) (MD) or the maximum tensile strength in the transverse direction (TD; vertical to the MD direction) for the electrolyte membrane is 70 N/mm01-13-2011
20110053039ELECTRODE CATALYST, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE ELECTRODE CATALYST - An electrode catalyst for a fuel cell having comparable electrochemical activity as a platinum electrode catalyst but is much cheaper than the platinum electrode catalyst has a structure in which palladium and at least one metal catalyst selected from the group consisting of nickel, gold, iron, and silver, and combinations thereof, are supported on a tungsten carbide and carbon mesoporous composite support. A membrane electrode assembly and a fuel cell including the electrode catalyst also has comparable electrochemical activity as a platinum electrode catalyst but is also much cheaper than the platinum electrode catalyst.03-03-2011
20100196787ELECTROLYTE MEMBRANE AND FUEL CELL USING THE SAME (AS AMENDED) - In a fuel cell 08-05-2010
20100173221CATALYST FOR FUEL CELL ELECTRODE, PROCESS FOR PRODUCING CATALYST FOR FUEL CELL ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL - This invention provides a catalyst for a fuel cell electrode, a process for producing a catalyst for a fuel cell electrode, a membrane electrode assembly, and a fuel cell, which are advantageous in suppressing aggregation of a carbon support such as carbon nanotubes, and in closely contacting the three of the carbon support, a catalyst component and an electrolyte component with each other. A catalyst for a fuel cell electrode contains a carbon support (e.g., CNTs) having a pi-conjugated system, an electrolyte component having an aromatic ring, and a catalyst component. A process for producing a catalyst for a fuel cell electrode. By contacting, in a solvent, a carbon support (e.g., CNTs) having a pi-conjugated system, an electrolyte component having an aromatic ring, and a catalyst component with each other, the carbon support can be modified with the electrolyte component and loaded with the catalyst component.07-08-2010
20110165496Fuel Cell Electrode Assembly and Method of Making the Same - According to at least one aspect of the present invention, a fuel cell electrode assembly is provided. In one embodiment, the fuel cell electrode assembly includes a substrate and a plurality of catalyst regions supported on the substrate to provide a passage way formed between the catalyst regions for passing fuel cell reactants, at least a portion of the plurality of catalyst regions including a number of atomic layers of catalyst metals. In certain instances, the number of atomic layers of catalyst metals is greater than zero and less than 300. In certain other instances, the number of atomic layers of catalyst metals is between 1 and 100. In yet certain other instances, the number of atomic layers of catalyst metals is between 1 and 20.07-07-2011
20120064435Anode-Side Catalyst Composition For Fuel Cell and Membrane Electrode Assembly (MEA) For Solid Polymer-Type Fuel Cell - To provide a technique capable of improving the deterioration of a fuel cell due to a non-stationary operation (start/stop, fuel shortage) and ensuing a low cost.03-15-2012
20120064434PROCESS AND MATERIALS FOR MANUFACTURING AN ELECTRODE WITH REDUCED MUD CRACKING - A substantially crack-free electrode layer is described. The substantially crack-free electrode layer includes a substrate; and a substantially crack-free electrode layer on the substrate, the electrode layer comprising a catalyst, an ionomer, and a layered silicate reinforcement. Methods of making the electrode layer, electrode ink compositions, and membrane electrode assemblies incorporating the electrode layer are also described.03-15-2012
20120070765POLYBENZOXAZINE-BASED COMPOUND, ELECTROLYTE MEMBRANE INCLUDING THE SAME, AND FUEL CELL EMPLOYING THE ELECTROLYTE MEMBRANE - A method of preparing an electrolyte membrane comprising a crosslinked object of a polybenzoxazine-based compound formed of a polymerized resultant product of a first monofunctional benzoxazine-based monomer or a second benzoxazine-based monomer multifunctional benzoxazine-based monomer with a crosslinkable compound.03-22-2012
20110081597POLYMER ELECTROLYTE, CROSSLINKED POLYMER ELECTROLYTE, POLYMER ELECTROLYTE MEMBRANE AND USE OF THE SAME - The present invention provides a polymer electrolyte, a crosslinked polymer electrolyte, a polymer electrolyte membrane and use of the same. The polymer electrolyte has a repeating unit represented by the following formula (1) in its molecule and an ion-exchange group in the molecule:04-07-2011
20110091791ELECTROLYTE POLYMER FOR POLYMER ELECTROLYTE FUEL CELLS, PROCESS FOR ITS PRODUCTION AND MEMBRANE-ELECTRODE ASSEMBLY - To provide an electrolyte polymer for polymer electrolyte fuel cells, made of a perfluorinated polymer having sulfonic groups, characterized in that in a test of immersing 0.1 g of the polymer in 50 g of a fenton reagent solution containing 3% of an aqueous hydrogen peroxide solution and 200 ppm of bivalent iron ions at 40° C. for 16 hours, the amount of eluted fluorine ions detected in the solution is not more than 0.002% of the total amount of fluorine in the polymer immersed. The electrolyte polymer of the present invention has very few unstable terminal groups and has an excellent durability, and therefore, is suitable as a polymer constituting an electrolyte membrane for polymer electrolyte fuel cells and a polymer contained in a catalyst layer.04-21-2011
20110091790ION-CONDUCTING MEMBRANE STRUCTURES - An ion-conducting membrane structure comprising (i) an ion-conducting membrane wherein said membrane has a first face and a second face, (ii) a first hydrogen peroxide decomposition catalyst and (iii) a first radical scavenger, wherein the first hydrogen peroxide decomposition catalyst is in a first layer on the first face of the ion-conducting membrane in an amount from 0.01 to 15 μg/cm04-21-2011
20110065018ANION EXCHANGE POLYMER ELECTROLYTES - Solid anion exchange polymer electrolytes and compositions comprising chemical compounds comprising a polymeric core, a spacer A, and a guanidine base, wherein said chemical compound is uniformly dispersed in a suitable solvent and has the structure:03-17-2011
20120231367COMPOSITE PROTON CONDUCTING MEMBRANE WITH LOW DEGRADATION AND MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELLS - A small molecule or polymer additive can be used in preparation of a membrane electrode assembly to improve its durability and performance under low relative humidity in a fuel cell. Specifically, a method of forming a membrane electrode assembly comprising a proton exchange membrane, comprises providing an additive comprising at least two nitrogen atoms to the membrane electrode assembly.09-13-2012
20100248071ELECTROLYTE MEMBRANE-ELECTRODE ASSEMBLY FOR DIRECT METHANOL FUEL CELL - Disclosed is an electrolyte membrane-electrode assembly for direct methanol fuel cells, wherein a solid polymer electrolyte membrane is held between a pair of electrodes each composed of a catalyst layer coated over and/or impregnated in a porous supporting body. This electrolyte membrane-electrode assembly for direct methanol fuel cells is characterized in that the solid polymer electrolyte membrane is obtained by irradiating a resin membrane with radiation and graft-polymerizing a radically polymerizable monomer. The electrolyte membrane-electrode assembly for direct methanol fuel cells is further characterized in that the catalyst layer of the anode electrode comprises a catalyst, wherein platinum group metal or platinum-containing alloy particles having a particle size of 5 nm or less are supported by carbon particles, and a solid polymer electrolyte, and the noble metal amount in the catalyst layer of the anode electrode is not more than 5 mg/cm09-30-2010
20100248072FUEL CELL - A fuel cell is provided, which includes a membrane electrode assembly including an electrolytic film sandwiched between an anode catalyst layer and a cathode catalyst layer, an anode gas diffusion layer disposed adjacent to the anode catalyst layer and a cathode gas diffusion layer disposed adjacent to the cathode catalyst layer, and a pair of separators which are in contact with the anode gas diffusion layer and the cathode gas diffusion layer, respectively. At least one of the separators includes a metallic member having a channel and an oxide layer disposed on a bottom of the channel. The oxide layer includes silica and tin oxide which accounts for 0.0001-30% by weight of silica.09-30-2010
20100248070VARIABLE CATALYST LOADING BASED ON FLOW FIELD GEOMETRY - A fuel cell including a membrane electrode assembly composed of a ionically conductive member sandwiched between a pair of electrodes. At least one of the electrodes including a catalyst loading characterized by catalytic activity that varies in proportion to the catalyst loading. Moreover, the fuel cell includes a flow path for supplying gaseous reactants to the electrodes and the catalyst loading is varied according to the flow path geometry.09-30-2010
20100248073FREE-STANDING MEMBRANE ELECTROLYTE ELECTRODE ASSEMBLY - A free-standing membrane electrolyte electrode assembly (ESC) comprises an electrolyte, an anode electrode formed at one end face of the electrolyte, and a cathode electrode formed at the other. The electrolyte is a single crystal having a surface along with oxide ions move or a direction in which the ions move or a polycrystal oriented along a surface along which oxide ions move or in a direction in which the ions move. The surface or the direction is parallel to the thickness direction. The thickness of the electrolyte is 50 to 800 μm, and the quotient of the division of the total thickness of the anode electrode and the cathode electrode by the thickness of the electrolyte is 0.1 or less. The thickness of the ESC is 1 mm or less.09-30-2010
20100227251CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, FUEL CELL, AND METHOD OF PRODUCING THE CATALYST LAYER - Provided are a highly active catalyst layer including platinum and a metal other than platinum, a membrane electrode assembly, a fuel cell, and a method of producing the catalyst layer. A catalyst layer for a fuel cell includes a polymer electrolyte, and a catalyst structure having a dendritic shape, in which the catalyst structure having the dendritic shape includes platinum and a metal other than platinum, and in which a platinum compositional ratio of a surface of the catalyst structure having the dendritic shape is higher than a platinum compositional ratio of the whole of the catalyst structure having the dendritic shape.09-09-2010
20100216050SEPARATION MEMBRANE FOR FUEL CELL - The present invention can provide an anion exchange type separation membrane used for direct liquid fuel type fuel cell, high in heat resistance, hard to deteriorate when using and capable of obtaining high battery output. A composite membrane used as the separation membrane for fuel cell can be obtained by using a porous film, composed of a hydrolysis resistant polyimide resin such as a polyimide resin having a fluorenylidene group in a main framework, as a substrate; optionally increasing water retention characteristics for example by applying a water-retentive resin to at least a part of a surface of the porous film; and then filling an anion-exchange resin such as a cross-linked hydrocarbon-based anion-exchange resin having a quaternary ammonium group as an anion exchange group into a void portion of the porous film.08-26-2010
20100209811MEMBRANE ELECTRODE ASSEMBLY - A membrane electrode assembly having a peripheral edge region and a central region. The membrane electrode assembly comprises an ion-conducting membrane, first and second electrocatalyst layers disposed either side of the ion-conducting membrane, and first and second gas diffusion layers disposed either side of the first and second electrocatalyst layers respectively. The membrane electrode assembly further comprises an edge protection member, the edge protection member comprising a film layer, a bonding layer, and one or more additives selected from the group consisting of free radical decomposition catalyst, self regenerating antioxidant, hydrogen donors (H-donor) primary antioxidant, free radical scavenger secondary antioxidant, oxygen absorbers (oxygen scavenger) and elemental palladium. The edge protection member is positioned between the membrane and the first and/or second gas diffusion layer at the peripheral edge region of the membrane electrode assembly, and the edge protection member overlaps the first and/or second electrocatalyst layers.08-19-2010
20100209814COMPOSITE CATALYST AND PRODUCING METHOD THEREOF - There is provided a composite catalyst in which metal particles having catalytic activity are supported at a high density on a surface of an inorganic oxide, and the supported metal particles are strongly fixed to the surface of the inorganic oxide to improve the durability of the composite catalyst.08-19-2010
20100209813BLOCK COPOLYMER, AND POLYMER ELECTROLYTE, POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL USING SAME - A polymer electrolyte for a fuel cell is provided at low cost which has excellent mechanical characteristics, resistance to oxidation and high ion conductivity, and which hardly swells.08-19-2010
20100209812FLUID TRANSFER DEVICE AND FUEL CELL COMPRISING SAME - Provided are a fluid transfer device having higher efficiency than conventional devices and a fuel cell comprising the fluid transfer device.08-19-2010
20100209815NANOSTRUCTURED CORE-SHELL ELECTROCATALYSTS FOR FUEL CELLS - Catalytic layers for use in the electrodes of fuel cells including a non-noble metal substrate layer coated with one or a few monolayers of noble metal, such as Pt. These thin, highly porous structures with large catalytically active surface areas, should exhibit a significantly higher power output per mg of Pt and per cm08-19-2010
20100209805MEMBRANE ELECTRODE ASSEMBLY HAVING PROTECTIVE BARRIER LAYER AND METHOD FOR MITIGATING MEMBRANE DECAY - A membrane electrode assembly (08-19-2010
20100209810POLYMER ELECTROLYTE COMPOSITION - Disclosed is a polymer electrolyte composition containing components (A) and (B). (A) a polymer electrolyte containing a segment having an ion-exchange group and a segment having substantially no ion-exchange groups, which is obtained using block copolymerization or graft copolymerization as a copolymerization method (B) a condensate of a phenol and an aldehyde compound08-19-2010
20100209809CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL - Catalyst layers include an electrocatalyst having high oxygen reduction activity that is useful as an alternative material to platinum catalysts. Uses of the catalyst layers are also disclosed.08-19-2010
20100209808FUEL CELL AND ELECTRODE POWDER CONSTITUTING THE CATALYTIC LAYER THEREOF - The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 08-19-2010
20100209807FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY, AND MEMBRANE-CATALYST LAYER ASSEMBLY - A fuel cell of the present invention includes a membrane-electrode assembly (08-19-2010
20100196788METHOD FOR PRODUCING METAL-SUPPORTED CARBON, METHOD FOR PRODUCING CRYSTALS CONSISTING OF FULLERENE MOLECULES AND FULLERENE NANOWHISKER/NANOFIBER NANOTUBES, AND APPARATUS FOR PRODUCING THE SAME - The present invention provides a method for producing metal-supported carbon, which includes supporting metal microparticles on the surface of carbon black, by a liquid-phase reduction method, in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, as well as a method for producing crystals comprising fullerene molecules and fullerene nanowhisker/nanofiber nanotubes, which includes uniformly stirring and mixing a solution containing a first solvent having fullerene dissolved therein, and a second solvent in which fullerene is less soluble than in the first solvent, in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other.08-05-2010
20100173222SOLID POLYMER FUEL CELL-PURPOSE ELECTROLYTE MEMBRANE, PRODUCTION METHOD THEREFOR, AND MEMBRANE-ELECTRODE ASSEMBLY - In an electrolyte membrane (07-08-2010
20120315568PROCESS FOR PRODUCING FUEL CELL ELECTRODE CATALYST, PROCESS FOR PRODUCING TRANSITION METAL OXYCARBONITRIDE, FUEL CELL ELECTRODE CATALYST AND USES THEREOF - Provided is a process for producing a fuel cell electrode catalyst having high catalytic activity which uses a transition metal, e.g., titanium, which process comprises thermal treatment at relatively low temperature, i.e., not including thermal treatment at high temperature (calcining) step. The process for producing a fuel cell electrode catalyst comprises a step (12-13-2012
20100279198COMPOSITE POLYMER ELECTROLYTE MEMBRANES - The invention provides composite polymer electrolyte membranes (PEMs) that have reduced methanol crossover and can be used to fabricate catalyst coated membranes (CCMs), membrane electrode assemblies (MEAs), and fuel cells.11-04-2010
20100273087CROSS-LINKED POLYAZOLE, METHOD OF PREPARING THE POLYAZOLE, ELECTRODE FOR FUEL CELL INCLUDING THE CROSS-LINKED POLYAZOLE, ELECTROLYTE MEMBRANE FOR FUEL CELL INCLUDING THE CROSS-LINKED POLYAZOLE, METHOD OF MANUFACTURING THE ELECTROLYTE MEMBRANE, AND FUEL CELL INCLUDING THE CROSS-LINKED POLYAZOLE - 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.10-28-2010
20100273086Membrane Electrode Assembly, Manufacturing Method Thereof and Fuel Cell - The present invention provides a membrane electrode assembly (MEA) which has a high level of power generation performance under a low humidified condition and a high level of production efficiency, and further, a manufacturing method of such an MEA and a fuel cell having such an MEA. The present invention includes forming first electrode catalyst layer 10-28-2010
20100291470SEPARATION MEMBRANE FOR SOLID POLYMER FUEL CELL AND SEPARATION MEMBRANE-CATALYST ELECTRODE ASSEMBLY - Disclosed is a membrane for polymer electrolyte fuel cells, which is composed of a hydrocarbon anion-ex-change resin membrane wherein an anion-exchange group is covalently bonded to a hydrocarbon resin, and an adhesive layer formed on at least one side of the hydrocarbon anion-exchange resin membrane. The membrane for polymer electrolyte fuel cells is characterized in that the adhesive layer is made of an anion-exchange resin having a Young's modulus of 1-1000 MPa.11-18-2010
20100291469FUEL CELL - According to one embodiment, a fuel cell includes a plurality of planar membrane electrode assemblies each produced by integrating a fuel electrode, an oxidizer electrode and an electrolyte membrane sandwiched between the fuel electrode and the oxidizer electrode, and a polyhedral package frame having plural planes which are disposed in a non-planar arrangement and support the plurality of membrane electrode assemblies so as to surround these membrane electrode assemblies.11-18-2010
20100291468SOLID OXIDE FUEL CELL (SOFC) DEVICE HAVING GRADIENT INTERCONNECT - A solid oxide fuel cell (SOFC) device having a gradient interconnect is provided, including a first gradient interconnect having opposing first and second surfaces, a first trench formed over the first surface of the first gradient interconnect, a second trench formed over the second surface of the first gradient interconnect, and an interconnecting tunnel formed in the first gradient interconnect for connecting the first and second trenches. A first porous conducting disc is placed in the first trench and partially protrudes over the first surface of the first gradient interconnect. A first sealing layer is placed over the first surface of the first gradient interconnect and surrounds the first trench. A membrane electrode assembly (MEA) is placed over the first surface of the first gradient interconnect and contacted with the first porous conducting disc and the first sealing layer.11-18-2010
20100291466DIFFUSION MEDIA FORMED BY PHOTOPOLYMER BASED PROCESSES - A diffusion medium layer for a fuel cell, including an electrically conductive microtruss structure disposed between a pair of electrically conductive grids is provided. At least one of the microtruss structure and the grids is formed from a radiation-sensitive material. A fuel cell having the diffusion medium layer and a method for fabricating the diffusion medium layer is also provided.11-18-2010
20100291464LOW CONTACT RESISTANCE COATED STAINLESS STEEL BIPOLAR PLATES FOR FUEL CELLS - A bipolar plate to reduce electrical contact resistance between the plate and a diffusion layer used in a fuel cell. The opposing surfaces of the plate define flow channels with upstanding lands interspersed between them. The lands of the plate form an electrically-conductive contact with a diffusion layer in the fuel cell. At least a portion of the electrically-conductive contact is made up of a nickel-based alloy that reduces the contact resistance between the plate and the diffusion layer as a way to achieve improved electric current density. In one form, the alloy can be used as the primary material in the plate, while in another, it can be used as a coating deposited onto a conventional stainless steel plate.11-18-2010
20100291462METHOD FOR PRODUCING MEMBRANES COATED WITH A CATALYST ON BOTH SIDES - The invention relates to a process for producing catalyst coated membranes for electrochemical devices, which comprises the steps 11-18-2010
20100203419Process For Producing Solid Polymer Electrolyte Membrane, and Solid Polymer Electrolyte Membrane - The invention provides a method for fabricating a reinforced polymer electrolyte membrane having greatly enhanced durability against a dry/wet cycle or freeze/defreeze cycle. In a method for fabricating a reinforced polymer electrolyte membrane according to the present invention, (1) a polymer electrolyte precursor is caused to infiltrate into a sheet-like porous reinforcing member, in the absence of a solvent, at a temperature higher than the melting point of the sheet-like porous reinforcing member, or (2) the polymer electrolyte precursor is first caused to infiltrate into the sheet-like porous reinforcing member, in the absence of a solvent, at a first temperature lower than the melting point of the sheet-like porous reinforcing member, and then heat-treated at a second temperature higher than the melting point of the sheet-like porous reinforcing member; thereafter, the polymer electrolyte precursor is transformed into a polymer electrolyte by hydrolyzing the polymer electrolyte precursor.08-12-2010
20100203418SOLID POLYMER FUEL BATTERY - A solid polymer fuel cell includes an electrode—electrolyte membrane coupling structure 08-12-2010
20110123900ION CONDUCTIVE COMPOSITE MEMBRANE USING INORGANIC CONDUCTOR - An ion-conductive composite membrane and a method of manufacturing the same, the membrane including phosphate platelets, a silicon compound, and a Keggin-type oxometalate and/or Keggin-type heteropoly acid, wherein the phosphate platelets are three-dimensionally connected to each other via the silicon compound. An electrolyte membrane having an ion-conductive inorganic membrane or an ion-conductive organic/inorganic composite membrane effectively prevents crossover of liquid fuel without the reduction of ion conductivity in a liquid fuel cell, thereby allowing for the production of fuel cells having excellent performance.05-26-2011
20110003233Solid oxide electrolytic device - A monolithic electrolytic assembly (MEA), as well as associated structures and processes operative in the general field of solid oxide electrolytic devices, is disclosed. The invention provides a reliable and durable interconnect for both structural and electrical components of such devices. In the present invention, thin-film-based solid oxide fuel cells and solid oxide oxygen/hydrogen generators may be fabricated using primarily solid metal alloys as underlying components of thin film and thick film structures built thereon.01-06-2011
20100233571REINFORCED ELECTROLYTE MEMBRANE FOR FUEL CELL, METHOD FOR PRODUCING THE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL, AND POLYMER ELECTROLYTE FUEL CELL COMPRISING THE ASSEMBLY - A reinforced electrolyte membrane for a fuel cell wherein the electrolyte membrane is reinforced with a porous membrane and a radical scavenger is immobilized in the porous membrane. The reinforced electrolyte membrane for a fuel cell is a solid polymer electrolyte membrane suppressing the radical scavenger from leaking outside of the system and having good chemical durability.09-16-2010
20100255403FUEL CELL - A fuel cell includes a membrane-electrode assembly, passageways provided on both sides of the membrane-electrode assembly, and fluid-permeable members provided between the membrane-electrode assembly and the passageways. Thermal resistance of the fluid-permeable member on an anode side is lower than that of the fluid-permeable member on a cathode side. In this case, heat flux at the anode side fluid-permeable member is increased, and heat flux at the cathode side fluid-permeable member is decreased.10-07-2010
20100248074MEMBRANE ELECTRODE ASSEMBLY FOR DIRECT OXIDATION FUEL CELL AND DIRECT OXIDATION FUEL CELL INCLUDING THE SAME - A membrane electrode assembly for a direct oxidation fuel cell includes an electrolyte membrane, an anode disposed on one face of the electrolyte membrane, and a cathode disposed on the other face of the electrolyte membrane. The cathode includes a cathode catalyst layer with a first main surface and a second main surface, and the cathode catalyst layer includes a cathode catalyst and a polymer electrolyte. The cathode catalyst layer includes a plurality of first regions and a plurality of second regions, and the first regions and the second regions are different in polymer electrolyte content. The polymer electrolyte content in each of the second regions is lower than the polymer electrolyte content in each of the first regions. The second regions are continuous from the first main surface of the cathode catalyst layer to the second main surface.09-30-2010
20110236788METHOD FOR MEMBRANE ELECTRODE ASSEMBLY FABRICATION AND MEMBRANE ELECTRODE ASSEMBLY - A method of coating carbon based electrodes and thick electrodes without mud-cracking is described. The electrode ink is deposited on a decal substrate, and transferred to a hot press before the electrode ink is completely dried. The partially dried electrode ink is hot pressed to the membrane to form a membrane electrode assembly. A membrane electrode assembly including a polymer membrane; and a pair of crack-free electrode layers on opposite sides of the polymer membrane, each of the pair of electrode layers having a thickness of at least about 50 μm is also described.09-29-2011
20100239947Condensed ring-containing polymer electrolyte and application thereof - The polymer electrolyte of the present invention comprises a structural unit represented by the following general formula (1) in weight fraction of 1 to 30% by weight:09-23-2010
20100233572FUEL CELL - The present invention relates to a fuel cell including: a membrane electrode assembly 09-16-2010
20100233570ELECTRODE LAYER OF FUEL CELL AND METHOD OF FABRICATING THE SAME - An electrode of an electrochemical cell and a method for fabricating the same is provided. The electrode is prepared by depositing ionomers to the catalyst layer of an electronic conductive layer, e.g. catalysts-coated carbon cloths. The ionomers are controllably deposited into the catalyst layer by applying a voltage. As a result, ionic conduction is enhanced and the reaction area of the three-phase-boundary region is increased.09-16-2010
20100233569ELECTROLYTE MULTILAYER MEMBRANE FOR SOLID POLYMER FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL - A multilayer electrolyte membrane for polymer electrolyte fuel cells, consisting of a laminate of at least two polymer electrolyte membranes at least one of which membranes comprises a block copolymer (I) which comprises, as its constituents, a polymer block (A) having as a main unit an aromatic vinyl compound unit and a flexible polymer block (B), and has ion-conducting groups on polymer block (A); and a membrane electrode assembly and a polymer electrolyte fuel cell. The multilayer membrane is economical, mild to the environment, and has high ion conductivity and high methanol barrier properties, together. It is preferred, from the object, that at least two of the constitutive electrolyte membranes comprise block copolymer (I), and/or at least one of the constitutive electrolyte membranes has an ion exchange capacity of 0.7 meq/g or more and at least one of them has an ion exchange capacity of less than 0.7 meq/g.09-16-2010
20120088181Chemical Durability Using Synergystic Mitigation Strategies - A fuel cell includes an ion conducting membrane having a first side and a second side. Characteristically, the ion conducting membrane has a sufficient amount of a stabilization agent and platinum to inhibit the loss of fluoride from the ion conducting membrane when compared to an ion conducting membrane having the same construction except for the presence of cerium ions.04-12-2012
20100143822CARBON NANOTUBE AND NONOFIBER FILM-BASED MEMBRANE ELECTRODE ASSEMBLIES - A membrane electrode assembly (MEA) for a fuel cell comprising a catalyst layer and a method of making the same. The catalyst layer can include a plurality of catalyst nanoparticles, e.g., platinum, disposed on buckypaper. The catalyst layer can have 1% or less binder prior to attachment to the membrane electrode assembly. The catalyst layer can include (a) single-wall nanotubes, small diameter multi-wall nanotubes, or both, and (b) large diameter multi-wall nanotubes, carbon nanofibers, or both. The ratio of (a) to (b) can range from 1:2 to 1:20. The catalyst layer can produce a surface area utilization efficiency of at least 60% and the platinum utilization efficiency can be 0.50 g06-10-2010
20100167163PROTON-CONDUCTING MEMBRANE AND THE USE OF THE SAME - The invention relates to a novel proton-conducting polymer membrane based on polyazols. Said polymer membrane can be used in a variety of ways due to its outstanding chemical and thermal properties and is especially suitable as a polymer electrolyte membrane (PEM) for producing membrane electrode units for so-called PEM fuel cells.07-01-2010
20100167161ELECTRODE ELECTROLYTE FOR POLYMER-TYPE FUEL CELL, AND USE THEREOF - Disclosed is an electrode electrolyte for solid polymer fuel cells, which uses a polymer electrolyte containing a polyarylene copolymer containing a nitrogen-containing aromatic ring having a substituent represented by —SO07-01-2010
20100167160Method For Producing Polymer Electrolyte Membrane For Solid Polymer Fuel Cell, Membrane Eelctrode Assembly For Solid Polymer Fuel Cell, and Solid Polymer Fuel Cell - The durability of a solid polymer electrolyte fuel cell can be enhanced by inhibiting deterioration of a polymer electrolyte membrane of a solid polymer electrolyte fuel cell without impairing power generation performance. The production process of a polymer electrolyte membrane for a solid polymer electrolyte fuel cell of the present invention is characterized by preparing a solution or dispersion of an alkoxide of a transition element or a rare earth element having a catalytic ability that decomposes peroxides, and (1) preparing a solution of a polymer electrolyte, uniformly mixing the solution or dispersion of the alkoxide with the solution of the polymer electrolyte, and forming a polymer electrolyte membrane, in which the transition metal or the rare earth metal is uniformly dispersed, from the mixed solution, or (2) preparing a polymer electrolyte membrane for a solid polymer electrolyte fuel cell, uniformly permeating the solution or dispersion of the alkoxide into the polymer electrolyte membrane, and forming a polymer electrolyte membrane in which the transition element or rare earth element is uniformly dispersed by hydrolyzing and condensing the alkoxide.07-01-2010
20110159402STABILIZED FLUOROPOLYMER AND METHOD FOR PRODUCING SAME - The present invention provides a method for producing a stabilized fluoropolymer which comprises producing the stabilized fluoropolymer by subjecting a treatment target substance containing a sulfonic-acid-derived-group-containing fluoropolymer to a fluorination treatment, wherein the sulfonic-acid-derived-group-containing fluoropolymer is a fluoropolymer containing —SO06-30-2011
20110159401DIRECT METHANOL FUEL CELL STRUCTURE - The invention provides a direct methanol fuel cell. The direct methanol fuel cell includes a membrane having a first surface and an opposite second surface. The membrane is sandwiched between a pair of electrodes. Two terminals of the membrane and a portion of the first and second surfaces adjacent to the two terminals are exposed from a pair of the electrodes. A pair of gas diffusion layers is respectively disposed on the pair of electrodes. A plurality of first border material layers having a plurality of holes is respectively physically embedded on the exposed first and second surfaces. A plurality of adhesion materials is respectively mounted on the border material layers, passing through the holes to contact the first and second surfaces of the membrane.06-30-2011
20110159400Hybrid Catalyst System and Electrode Assembly Employing the Same - According to one aspect of the present invention, a hybrid catalyst system is provided. In one embodiment, the hybrid catalyst system includes a support mixture and a catalyst material supported on the support mixture, wherein the support mixture includes a first support material having a first average surface area and a second support material having a second average surface area different from the first average surface area, the first and second support materials collectively defining regions of differential hydrophobicity. In certain instances, the hybrid catalyst system can be configured as a catalyst layer to be disposed next to a proton exchange membrane of a fuel cell.06-30-2011
20130177833MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELLS WITH INCREASED PERFORMANCE - The present invention relates to membrane electrode assemblies comprising (i) at least two electrochemically active electrodes, (ii) said electrodes being separated by at least one polymer electrolyte membrane or electrolyte matrices, (iii) said electrodes having a catalyst layer being in contact with the above-mentioned polymer electrolyte membrane or matrices, (iv) said catalyst layer at the cathode comprising a polymer comprising the recurring units of the general formula (I) as ionomeric material and fuel cells with increased performance.07-11-2013
20120251921PHOSPHORUS CONTAINING BENZOXAZINE-BASED MONOMER, POLYMER THEREOF, ELECTRODE FOR FUEL CELL INCLUDING THE POLYMER, ELECTROLYTE MEMBRANE FOR FUEL CELL INCLUDING THE POLYMER, AND FUEL CELL USING THE ELECTRODE - A phosphorus containing monomer, a polymer thereof, an electrode for a fuel cell including the polymer, an electrolyte membrane for a fuel cell including the polymer, and a fuel cell including the electrode. The phosphorus containing monomer is represented by Formula 1:10-04-2012
20120251920BENZOXAZINE-BASED MONOMER, POLYMER THEREOF, ELECTRODE FOR FUEL CELL INCLUDING THE POLYMER, ELECTROLYTE MEMBRANE FOR FUEL CELL INCLUDING THE POLYMER, AND FUEL CELL USING THE ELECTRODE - A benzoxazine-based monomer includes a halogen atom-containing functional group and a nitrogen-containing heterocyclic group. A polymer formed from the benzoxazine-based monomer may be used in an electrode for a fuel cell and electrolyte membrane for a fuel cell.10-04-2012
20130095409METHOD FOR CONDITIONING MEMBRANE-ELECTRODE-UNITS FOR FUEL CELLS - The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.04-18-2013
20130130151METAL ALLOY CATALYSTS FOR FUEL CELL CATHODES - A metal alloy catalyst for the oxygen reduction reaction in fuel cells is disclosed. The catalyst contains the metals Pd, M1 and M2. M1 and M2 are different metals selected from Co, Fe, Au, Cr and W, excluding the combination PdCoAu.05-23-2013
20110223519SOLID OXIDE FUEL CELL AND METHOD OF PREPARING THE SAME - A solid oxide fuel cell includes a membrane electrode assembly including an anode, a cathode, and a solid oxide electrolyte membrane disposed between the anode and the cathode; and a porous conductive support disposed at one surface or both surfaces of the membrane electrode assembly. Both the membrane electrode assembly and the porous conductive support have an uneven structure, and are coupled to each other in a male and female coupling manner.09-15-2011
20110244363ELECTRODE CATALYST FOR FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL INCLUDING SAME, AND FUEL CELL SYSTEM INCLUDING SAME - An electrode catalyst for a fuel cell including a carbon-based carrier and an active metal supported in the carrier, for example, an electrode catalyst for a fuel cell includes a carrier and an active metal supported in the carrier, wherein the electrode catalyst has an X value of 95 to 100% in Equation 1.10-06-2011
20100291463ELECTRODE CONTAINING NANOSTRUCTURED THIN CATALYTIC LAYERS AND METHOD OF MAKING - A method of transferring a nanostructured thin catalytic layer from its carrying substrate to a porous transfer substrate and further processing and restructuring the nanostructured thin catalytic layer on the porous transfer substrate is provided. The method includes transferring the nanostructured catalytic layer from its carrying substrate to a transfer substrate. The nanostructured catalytic layer then is processed and reconstructed, including removing the residual materials and adding additional components or layers to the nanostructured catalytic layer, on the transfer substrate. Methods of fabricating catalyst coated membranes with the reconstructed electrode including the nanostructured thin catalytic layer, reconstructed electrode decals, and catalyst coated proton exchange membranes are also described.11-18-2010
20100304266MEMBRANE ELECTRODE ASSEMBLY FOR ORGANIC/AIR FUEL CELLS - A membrane electrode assembly for an organic/air fuel cell is provided comprising a proton exchange membrane, an anode electrode, and a cathode electrode. The proton exchange membrane is made of a highly fluorinated ion-exchange polymer. The anode electrode is comprised of an anode electrocatalyst of platinum and ruthenium supported on particulate carbon and a highly fluorinated ion-exchange polymer binder, and the metal loading in the anode electrode is less than 3 mg/cm12-02-2010
20120282540Nanowire-Based Membrane Electrode Assemblies for Fuel Cells - The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.11-08-2012
20110294037ELECTRODE CONTAINING NANOSTRUCTURED THIN CATALYTIC LAYERS AND METHOD OF MAKING - A method of making an electrode is provided. The method includes providing an electrocatalyst decal comprising a carrying substrate having a nanostructured thin catalytic layer thereon; providing a transfer substrate with an adjacent adhesive layer; adhering the nanostructured thin catalytic layer adjacent to the adhesive layer to form a composite structure; removing the carrying substrate from the composite structure; and removing the transfer substrate from the composite structure to form the stand-alone nanostructured thin catalytic film comprising the adhesive layer with the nanostructured thin catalytic layer adhered thereto. A stand alone nanostructured thin catalytic film and methods of constructing electrodes with the stand alone nanostructured thin catalytic films are also described.12-01-2011
20120021331NANOSTRUCTURED CATALYST SUPPORTS - The present invention relates to SiC nanostructures, including SiC nanopowder, SiC nanowires, and composites of SiC nanopowder and nanowires, which can be used as catalyst supports in membrane electrode assemblies and in fuel cells. The present invention also relates to composite catalyst supports comprising nanopowder and one or more inorganic nanowires for a membrane electrode assembly.01-26-2012
20120094210INK COMPRISING POLYMER PARTICLES, ELECTRODE, AND MEA - Catalyst ink comprising one or more catalyst materials, a liquid medium and polymer particles comprising one or more proton-conducting polymers, an electrode comprising at least one catalyst ink according to the present invention, a membrane-electrode assembly comprising at least one electrode according to the invention or comprising at least one catalyst ink according to the present invention, a fuel cell comprising at least one membrane-electrode assembly according to the invention and also a process for producing a membrane-electrode assembly according to the present invention.04-19-2012

Patent applications in class Membrane electrode assembly (MEA)