| Entries |
| Document | Title | Date |
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| 20100167167 | SOLID POLYMER ELECTROLYTE, METHOD FOR PRODUCTION THEREOF, AND SOLID POLYMER FUEL CELL - The present invention provides a solid polymer electrolyte having a water cluster structure composed of hydrophilic groups and occluded water in a solid polymer electrolyte, characterized in that the water cluster structure difference corresponding to the difference between diameters of the pore and the bottleneck part in the water cluster structure calculated by the dissipative particle dynamics method is 15.4×0.072 nm or less. The solid polymer electrolyte has improved ionic conductivity. | 07-01-2010 |
| 20100304272 | PROTON CONDUCTING POLYMER ELECTROLYTE MEMBRANE USEFUL IN POLYMER ELECTROLYTE FUEL CELLS - The present invention provides an alternate proton conducting polymer electrolyte membrane and a process for the preparation thereof. More particularly the present invention provides a conducting hybrid polymer electrolyte membrane comprising a stable host polymer and a proton-conducting medium as a guest polymer for its suitability in PEM-based fuel cells. The present invention deals with host polymer, comprising a group of poly (vinyl alcohol), poly (vinyl fluoride), polyethylene oxide, polyethyleneimine, polyethylene glycol, cellulose acetate, polyvinylmethylethyl ether, more preferably polyvinyl alcohol and a guest polymer comprising poly(styrene sulfonic acid), poly(acrylic acid), sulfonated phenolic, polyacrylonitrile, polymethyl acrylate, and quaternary ammonium salt, more preferably poly(styrene sulfonic acid). | 12-02-2010 |
| 20100304273 | PROTON CONDUCTING MEMBRANES FOR FUEL CELLS HAVING A PROTON GRADIENT AND METHODS FOR PREPARING SAID MEMBRANES - A proton exchange membrane for a fuel cell, comprising a graft (co)polymer comprising a main chain and grafts comprising at least one proton acceptor group and at least one proton donor group. | 12-02-2010 |
| 20100323275 | ION CONDUCTIVE COMPOSITION, ION CONDUCTIVE FILM CONTAINING THE SAME, ELECTRODE CATALYST MATERIAL, AND FUEL CELL - An object of the present invention is to provide an ion-conductive composition that has proton conductivity over a wide temperature range, including the intermediate and high temperature range of 100° C. and higher, and an ion-conductive composite material such as ion-conductive membrane prepared from the composition. The composite ion-conductive material comprises the ion-conductive composition of the present invention, and the ion-conductive composition includes an ion-conductive polymer and ion-conductive inorganic solid material. | 12-23-2010 |
| 20110027692 | PROTON-CONDUCTIVE POLYMER ELECTROLYTE MEMBRANE, METHOD OF MANUFACTURING THE PROTON-CONDUCTIVE POLYMER ELECTROLYTE MEMBRANE, AND MEMBRANE-ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL USING THE PROTON-CONDUCTIVE POLYMER ELECTROLYTE MEMBRANE - A method of manufacturing a proton-conductive polymer electrolyte membrane using polyvinyl alcohol (PVA) as a base material and having excellent proton conductivity and methanol blocking properties is provided. The method includes: heat-treating a precursor membrane including PVA and a water-soluble polymer electrolyte having a proton conductive group to proceed crystallization of the PVA; and chemically crosslinking the heat-treated precursor membrane with a crosslinking agent reactive with the PVA, to form a polymer electrolyte membrane in which a crosslinked PVA is a base material and protons are conducted through the electrolyte retained in the base material. The content of a water-soluble polymer except the PVA and the water-soluble polymer electrolyte in the precursor membrane is in a weight ratio of less than 0.1 with respect to the PVA. | 02-03-2011 |
| 20110033778 | POLYMER ELECTROLYTE MEMBRANE - A polymer electrolyte membrane, wherein the period length L in the membrane surface direction, which period length is defined by formula (1) and is measured by using a small-angle X-ray diffractometer, is less than 52.0 nm: | 02-10-2011 |
| 20110039185 | ELECTROLYTE MEMBRANE FOR POLYMER ELECTROLYTE FUEL CELL AND METHOD OF MANUFACTURING THE SAME - An electrolyte membrane ( | 02-17-2011 |
| 20110053043 | NANOSTRUCTURED POLYMER MEMBRANES FOR PROTON CONDUCTION - Polymers having an improved ability to entrain water are characterized, in some embodiments, by unusual humidity-induced phase transitions. The described polymers (e.g., hydrophilically functionalized block copolymers) have a disordered state and one or more ordered states (e.g., a lamellar state, a gyroid state, etc.). In one aspect, the polymers are capable of under-going a disorder-to-order transition while the polymer is exposed to an increasing temperature at a constant relative humidity. In some aspects the polymer includes a plurality of portions, wherein a first portion forms proton-conductive channels within the membrane and wherein the channels have a width of less than about 6 nm. The described polymers are capable of entraining and preserving water at high temperature and low humidity. Surprisingly, in some embodiments, the polymers are capable of entraining greater amounts of water with the increase of temperature. The polymers can be used in Polymer Electrolyte Membranes in fuel cells. | 03-03-2011 |
| 20110059387 | HIGHLY PROTON CONDUCTIVE CROSSLINKED VINYLSULFONIC ACID POLYMER ELECTROLYTE COMPOSITE MEMBRANES AND ITS PREPARATION METHOD FOR POLYMER ELECTROLYTE FUEL CELLS - A highly proton conductive polymer electrolyte composite membrane for a fuel cell is provided. The composite membrane includes crosslinked polyvinylsulfonic acid. The composite membrane is produced by impregnating a mixed solution of vinylsulfonic acid as a monomer, a hydroxyl group-containing bisacrylamide as a crosslinking agent and a photoinitiator or thermal initiator into a microporous polymer support, polymerizing the monomer, and simultaneously thermal-crosslinking or photo-crosslinking the polymer to form a chemically crosslinked polymer electrolyte membrane which is also physically crosslinked with the porous support. Further provided is a method for producing the composite membrane in a simple manner at low cost as well as a fuel cell using the composite membrane. | 03-10-2011 |
| 20110091793 | PROTON CONDUCTING ELECTROLYTE - A cationic conductive polymer is described herein which generally comprises a proton donating polymer and an oxocarbonic acid. The cationic conductive polymer exhibits a high conductivity in low humidity environments. | 04-21-2011 |
| 20110136041 | SULFONATED 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 |
| 20110151355 | POLYMER, POLYMER ELECTROLYTE AND USE OF SAME - The present invention provides a polymer, a polymer electrolyte and the use thereof. The polymer has, as a structural unit, a phenylene group in which two or three hydrogen atoms each have been substituted with a group represented by the following formula (A), and is insoluble in water: | 06-23-2011 |
| 20110159406 | SUPERCONDUCTING ELECTROLYTIC HYBRID MATERIAL, AND PREPARATION METHOD AND USES THEREOF - The present invention relates to a novel superconducting hybrid polymer material and to the preparation method and uses thereof, particularly for proton superexchange membranes usable as fuel cell electrolytes. | 06-30-2011 |
| 20110223521 | ION-Conducting Sulfonated Polymeric Materials - Sulfonated polymers are made by the direct polymerization of a sulfonated monomer to form the sulfonated polymers. The types of sulfonated polymers may include polysulfones or polyimides. The sulfonated polymers can be formed into membranes that may be used in proton exchange membrane fuel cells or as ion exchange membranes. The membranes formed from the sulfonated polymers exhibit improved properties over that of Nafion®. A heteropoly acid may be added to the sulfonated polymer to form a nanocomposite membrane in which the heteropoly acid is highly dispersed. The addition of a heteropoly acid to the sulfonated polymer increases the thermal stability of the membrane, enhances the conductivity above 100° C., and reduces the water uptake of the membrane. | 09-15-2011 |
| 20110262838 | Triblock Copolymers with Acidic Groups - Triblock copolymers useful for forming ion conductive membranes are provided. The triblock copolymers are characterized by having either a hydrophobic-hydrophilic-hydrophobic or a hydrophilic-hydrophobic-hydrophilic polymer sequence that induces a microphase separated morphology. Variations in which the hydrophilic polymer sequence component includes either acid groups or salts of acid groups are also disclosed. Methods for forming an ion conductive membrane from the triblock copolymers are provided. | 10-27-2011 |
| 20120058416 | PROTON-CONDUCTIVE COMPOSITE ELECTROLYTE MEMBRANE AND PRODUCING METHOD THEREOF - A composite electrolyte membrane of the present invention includes a porous body composed of an inorganic substance and an electrolyte material. The porous body includes therein plural spherical pores in which a diameter is substantially equal, and communicating ports each allowing the spherical pores adjacent to each other to communicate with each other. The electrolyte material is provided on the spherical pores and the communicating ports, has proton conductivity, and is composed of a hydrocarbon polymer. The proton-conductive composite electrolyte membrane has excellent ion conductivity, high heat resistance, and restricted swelling when being hydrous, and is capable of being produced at low cost. | 03-08-2012 |
| 20120094212 | POLYUREA ELECTROLYTE AND METHOD FOR MANUFACTURING THE SAME - A polyurea electrolyte includes a polyurea resin formed by a polymerization of a first compound having two or more isocyanate groups and a second compound having two or more amino groups. The first compound or the second compound contains ten or more carbon chains, and the first compound or the second compound contains a sulfonic acid group or a carboxylic acid group. A method for manufacturing the polyurea electrolyte includes neutralizing the sulfonic acid group or the carboxylic acid group in the first compound or the second compound by a neutralizing agent; after the neutralizing, polymerizing the first compound and the second compound; and after the polymerizing, removing the neutralizing agent from a polymer of the first compound and the second compound. | 04-19-2012 |
| 20120107725 | Solid Polymer Electrolyte Composition, and Ion-Exchange Membrane, Membrane Electrode Assembly and Fuel Cell - To provide a solid polymer electrolyte composition that can improve oxidation resistance without causing decrease in proton conductivity, elution of added components and the like, and an ion-exchange membrane, a membrane electrode assembly and a fuel cell, each using the composition. It is possible to obtain a solid polymer electrolyte composition having excellent oxidation resistance without causing decrease in proton conductivity, elution of added components and the like, by mixing an aromatic hydrocarbon-based polymer electrolyte, a phosphorus-containing polymer compound and a metallic element. | 05-03-2012 |
| 20120129075 | PROTON-CONDUCTIVE POLYMER ELECTROLYTE MEMBRANE, AND MEMBRANE-ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL USING THE SAME - Provided is a polyimide-based proton-conductive polymer electrolyte membrane having high methanol permeation resistance property (methanol blocking property). The proton-conductive polymer electrolyte membrane includes, as a main component, a polyimide resin formed by polycondensation of a tetracarboxylic dianhydride, a first aromatic diamine having a proton-conductive group, and a second aromatic diamine having no proton-conductive group. The second aromatic diamine has a fused ring skeleton composed of three or more rings. This electrolyte membrane is suitable for use in a polymer electrolyte fuel cell (PEFC), in particular in a direct methanol fuel cell (DMFC). | 05-24-2012 |
| 20120129076 | Novel Sulfonic Acid Group-Containing Segmented Block Copolymer and Use Thereof - Disclosed is a proton exchange membrane for use in fuel cells, which not only has improved proton conductivity and resistance to swelling caused by hot water but also has greater durability when used in a fuel cell, as well as a sulfonic acid group-containing segmented block copolymer constituting the proton exchange membrane, a membrane electrode assembly using the proton exchange membrane, and a fuel cell using the membrane electrode assembly. A sulfonic acid group-containing segmented block copolymer, which is a di- or multi-block copolymer including, within a molecule, at least one kind of hydrophilic segment and at least one kind of hydrophobic segment, a 0.5 g/dL solution thereof dissolved in N-methyl-2-pyrrolidone as a solvent showing a logarithmic viscosity measured at 30° C. in the range of 0.5 to 5.0 dL/g, wherein the copolymer has at least one kind of hydrophobic segment represented by Chemical Formula 1, the segment has a structure bound to a group represented by Chemical Formula 2, and the hydrophilic segment has at least one kind of structure represented by Chemical Formula 3 or Chemical Formula 3-2. | 05-24-2012 |
| 20120225372 | PROTON CONDUCTING ELECTROLYTES WITH CROSS-LINKED COPOLYMER ADDITIVES FOR USE IN FUEL CELLS - A proton conducting polymer electrolyte comprising a proton conducting ionomer cross-linked with an amount of a copolymer additive comprising cross-linking functional groups and other functional groups (e.g. proton carriers, chelating agents, radical scavengers) shows improved durability over the ionomer alone and provides for more stable inclusion of these other functional groups. The copolymer additive comprises at least two types of metal oxide monomers, one having cross-linking functional groups and the other having the other functional groups. | 09-06-2012 |
| 20120244453 | ELECTROLYTIC MEMBRANE FOR FUEL CELL, ELECTRODE FOR FUEL CELL, AND FUEL CELL INCLUDING THE ELECTROLYTIC MEMBRANE AND/OR THE ELECTRODE - An electrolytic membrane for a fuel cell including a crystalline organic and inorganic porous composite, an electrode for a fuel cell including a crystalline organic and inorganic porous composite, and a fuel cell including the electrolytic membrane and/or the electrode. | 09-27-2012 |
| 20130052564 | POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL - A polymer electrolyte membrane which exhibits superior high-temperature operability and a fuel cell and the like comprising the polymer electrolyte membrane are provided. In an aspect, the present invention relates to a polymer electrolyte membrane comprising a polymer electrolyte and having a first surface and a second surface, wherein the water vapor permeability coefficient from the first surface of the polymer electrolyte membrane to the second surface which is measured in a state where the first surface is exposed to a humidified environment of a temperature of 85° C. and a relative humidity of 20% and the second surface is exposed to a non-humidified environment of a temperature of 85° C. and a relative humidity of 0% is equal to or higher than 7.0×10 | 02-28-2013 |
| 20130115543 | THERMOSTABLE POLYMER ELECTROLYTE MEMBRANE AND PROCESS FOR PRODUCING THE SAME - The present invention relates to a thermostable polymer electrolyte membrane which comprises a main chain comprising an alicyclic polybenzimidazole and a graft chain added to the main chain by radiation-induced graft polymerization, wherein at least a part of the graft chain has sulfonic acid groups. The thermostable polymer electrolyte membrane of the invention is used for many apparatuses such as polymer electrolyte fuel cells or water electrolysis devices, in which the electrolyte membrane exhibits high proton conductivity, low fuel permeability, high oxidation resistance and superior mechanical property under operation conditions at high temperature. The present invention also provides a simple and low-cost process for producing the same. | 05-09-2013 |
| 20130122399 | POLYMER ELECTROLYTE MEMBRANE WITH FUNCTIONALIZED NANOPARTICLES - The present invention relates to a polymer electrolyte membrane for fuel cells, comprising a polymer matrix of at least one basic polymer and one or more doping agents, wherein particles containing ionogenic groups and having a mean particle diameter in the nanometer range are embedded in the polymer matrix and the particles containing ionogenic groups are distributed homogeneously in the polymer matrix in a concentration of less than 50% relative to the weight of the polymer matrix, as well as to the production and use of same, especially in high-temperature fuel cells. | 05-16-2013 |
| 20130216936 | ALKALINE SINGLE ION CONDUCTORS WITH HIGH CONDUCTIVITY AND TRANSFERENCE NUMBER AND METHODS FOR PREPARING THE SAME - A method of producing an alkaline single ion conductor with high conductivity includes: a) providing a hydrocarbon oligomer or polymer having immobilized acidic substituent groups selected from the group consisting of a sulfonic acid group, sulfamide group, a phosphonic acid group, or a carboxy group, in its alkaline ion form wherein at least a part of the acidic protons of the substituent groups have been exchanged against alkali cations, and b) solvating the hydro-carbon oligomer or polymer of step a) in an aprotic polar solvent for a sufficient time to effect a solvent uptake of at least 5% by weight and to obtain a solvated product, wherein the molar ratio of solvent/alkaline cation is 1:1 to 10,000:1, and which solvated product has a conductivity of at least 10 | 08-22-2013 |
| 20130295488 | POLYMER ELECTROLYTE MEMBRANE, METHOD FOR PRODUCING THE SAME, MEMBRANE-ELECTRODE ASSEMBLY USING THE SAME, AND FUEL CELL USING THE SAME - Provided are a polymer electrolyte membrane exhibiting a relatively high ion conductivity, and a method for producing the polymer electrolyte membrane. | 11-07-2013 |
| 20130309596 | LIQUID COMPOSITION, PROCESS FOR ITS PRODUCTION, AND PROCESS FOR PRODUCING MEMBRANE-ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELLS - An electrolyte membrane is prepared from a liquid composition comprising at least one member selected from the group consisting of trivalent cerium, tetravalent cerium, bivalent manganese and trivalent manganese; and a polymer with a cation-exchange group. The liquid composition is preferably one containing water, a carbonate of cerium or manganese, and a polymer with a cation-exchange group, and a cast film thereof is used as an electrolyte membrane to prepare a membrane-electrode assembly. The present invention successfully provides a membrane-electrode assembly for polymer electrolyte fuel cells being capable of generating the electric power in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas, and being capable of stably generating the electric power over a long period of time. | 11-21-2013 |
| 20130316268 | ION EXCHANGE MEMBRANE FILLING COMPOSITION, METHOD OF PREPARING ION EXCHANGE MEMBRANE, ION EXCHANGE MEMBRANE, AND REDOX FLOW BATTERY - A composition for filling an ion exchange membrane including a first aromatic vinyl monomer having a halogenated alkyl group or a quaternary ammonium salt group, a method of preparing the ion exchange membrane, an ion exchange membrane prepared using the method, and a redox flow battery including the ion exchange membrane. | 11-28-2013 |
| 20140134519 | ELECTROLYTE MEMBRANE FOR FUEL CELL, ELECTRODE FOR FUEL CELL, AND FUEL CELL EMPLOYING THE SAME - An electrolyte membrane for a fuel cell includes: an inorganic ionic conductor including a trivalent metal element, a pentavalent metal element, phosphorous, and oxygen; and a polymer. | 05-15-2014 |
| 20140154612 | POLYMER-ELECTROLYTE MEMBRANE, ELECTROCHEMICAL FUEL CELL, AND RELATED METHOD - A polymer-electrolyte membrane is presented. The polymer-electrolyte membrane comprises an acid-functional polymer, and an additive incorporated in at least a portion of the membrane. The additive comprises a fluorinated cycloaliphatic additive, a hydrophobic cycloaliphatic additive, or combinations thereof, wherein the additive has a boiling point greater than about 120° C. An electrochemical fuel cell including the polymer-electrolyte membrane, and a related method, are also presented. | 06-05-2014 |
| 20140329169 | SULFONATED POLYETHERSULFONE COPOLYMER CONTAINING HYDROXYL GROUPS AND PREPARATION METHOD THEREOF, POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELLS AND MEMBRANE ELECTRODE ASSEMBLY COMPRISING THE SAME - Provided are a hydroxyl group-containing sulfonated polyethersulfone copolymer, a method for preparing the same, a polymer electrolyte membrane for fuel cell, and a membrane electrode assembly including the same. More particularly, provided are a hydroxyl group-containing sulfonated polyethersulfone electrolyte membrane and a membrane electrode assembly including the same, which are applied to a fuel cell to provide significantly higher ion conductivity as compared to the sulfonated polymer electrolyte membranes according to the related art. The hydroxyl group-containing sulfonated polyethersulfone copolymer electrolyte membrane shows significantly higher ion conductivity under various temperature and humidity conditions as compared to the sulfonated polymer electrolyte membranes according to the related art. Therefore, it is expected that the hydroxyl group-containing sulfonated polyethersulfone copolymer substitutes for expensive fluoropolymer electrolyte membranes such as Nafion. | 11-06-2014 |
| 20140377686 | POLYMER ELECTROLYTE COMPOSITION, AND POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY AND SOLID POLYMER FUEL CELL EACH USING SAME - Provided are: a practically excellent polymer electrolyte composition having excellent chemical stability of being resistant to strong oxidizing atmosphere during operation of fuel cell, and achieving excellent proton conductivity under low-humidification conditions, excellent mechanical strength and physical durability; a polymer electrolyte membrane, a membrane electrode assembly, and a polymer electrolyte fuel cell each using the same. The polymer electrolyte composition of the present invention comprises at least an ionic group-containing polymer (A) and a phosphorus-containing additive (B), the phosphorus-containing additive (B) being at least one of a phosphine compound and a phosphinite compound. The polymer electrolyte membrane, the membrane electrode assembly, and the polymer electrolyte fuel cell of the present invention are structured by the polymer electrolyte composition. | 12-25-2014 |
| 20160181642 | POLYMER ELECTROLYTE AND PREPARATION METHOD THEREOF | 06-23-2016 |
| 20190148756 | METHOD FOR PRODUCING POLYMER ELECTROLYTE MOLDED ARTICLE, POLYMER ELECTROLYTE MATERIAL, POLYMER ELECTROLYTE MEMBRANE, AND POLYMER ELECTROLYTE FUEL CELL | 05-16-2019 |
