Abstract: This invention provides a novel graft polymer that has excellent proton conductivity, is capable of regulating hydrogen permeability, methanol permeability, and the like, and can serve as a starting material for a polymer electrolyte membrane, which facilitates moisture balance control and efficient operation of a fuel cell. A polymer electrolyte membrane composed of such graft polymer is also provided. This graft polymer comprises a main chain comprising a hydroxyl group-containing polymer and a graft chain comprising a polymer containing a sulfonic acid group-containing monomer.

Abstract: Described is a process to prepare fluoropolymer organic-liquid dispersions containing a homogeneous mixture of reacted and unreacted sulfonyl halide groups. The dispersions are useful in the preparation of crosslinked membranes.

Abstract: The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group according to the present invention, physical characteristics, ion exchanging ability, metal ion adsorption ability and a proccessability are excellent, and thus the copolymer can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.

Abstract: A room temperature crosslinkable polymer system comprising an anhydride containing polymer and an oxyalkylene amine and a polymer electrolyte derived therefrom are prepared and employed as ion conducting materials for batteries such as lithium ion battery, solar cells and electrochromic devices is disclosed.

Abstract: The present invention relates to a polymer blend electrolyte membrane comprising an inorganic polymer having polydimethylsiloxane as a main chain, which has a pore structure at both ends formed by condensation reaction between 3-aminopropyltriethoxysilane and tetraethylorthosilicate, wherein phosphoric acid is chemically linked to an amino group of the pore structure; and a proton-conducting polymer having a cation exchange group at the side chain thereof, as well as a manufacturing method thereof. Generally, proton-conducting electrolyte membranes have significantly reduced ion conductivity at high temperatures. However, proton-conducting electrolyte membranes have advantages in terms of efficiency and cost, and thus it is needed to develop an electrolyte membrane, which has excellent ion conductivity even at high temperature. Accordingly, the present invention aims to provide a polymer blend electrolyte membrane for use at high temperature and a manufacturing method thereof.

Abstract: To provide a separating agent for IgG purification, whereby IgG can be separated and purified efficiently at a high purity, and a method for purifying an IgG using it. A separating agent for IgG purification, characterized in that a polyacrylic acid and/or a polymethacrylic acid is immobilized on a carrier, and a method for purifying an IgG monomer, characterized in that a mixture containing an IgG monomer and an impurity containing polymeric IgG is contacted to the separating agent and eluted.

Abstract: A chemical fullerene derivative is for a proton conducting membrane electrolyte, in which sulfonic acid group SO3M and/or phosphonic acid group PO(OM)2 is directly bonded, but an organic compound is substantially not bonded. A production method is for the chemical fullerene derivative, which uses dimethylacetamide plus water in the case of sulfonation reagent K2SO3 and dioxane in the case of phosphonation reagent LiPO(OEt)2.

Abstract: An amphoteric ion exchange membrane for use in a vanadium redox flow battery has a vanadium ion permeability of less than 10×10?9 cm2/min.

Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, owing to its excellent chemical and thermal properties, be used for a variety of purposes and is particularly suitable as a polymer-electrolyte membrane (PEM) for the production of membrane electrode units for so-called PEM fuel cells.

Abstract: The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group according to the present invention, physical characteristics, ion exchanging ability, metal ion adsorption ability and a processability are excellent, and thus the copolymer can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins.

Abstract: The polymer electrolyte membrane according to the present invention comprises a polymer electrolyte having ion-exchange groups, wherein Sp and Snp satisfy a relationship expressed by the following expression (I): Sp/Snp?0.42??(I) where Sp represents the total of peak areas obtained by measurement of a 13C-solid state nuclear magnetic resonance spectrum of the polymer electrolyte membrane, the polymer electrolyte membrane having been subjected to a first immersion treatment comprising immersing the polymer electrolyte membrane in 5 mmol/L iron (II) chloride tetrahydrate aqueous solution at 25° C. for 1 hour, and thereafter drying the polymer electrolyte membrane at 25° C.

Abstract: A process for preparing mechanically stabilized polyazoles, comprising the following steps: I) treating at least one polyazole having at least one amino group in a repeat unit with a solution comprising (i) at least one strong acid and (ii) at least one stabilizing reagent, the total content of stabilizing reagents in the solution being in the range from 0.01 to 30% by weight, II) performing the stabilization reaction directly and/or in a subsequent processing step by heating to a temperature greater than 25° C., using at least one high-functionality polyether as the stabilizing reagent. The polyazoles thus obtainable are notable especially for a high conductivity and a very good mechanical stability. They are therefore especially suitable for applications in fuel cells.

Abstract: The present invention relates to a novel proton-conducting polymer membrane based on aromatic polyazoles which contain sulfonic acid groups and in which the sulfonic acid groups are covalently bound to the aromatic ring of the polymer and which can, owing to their excellent chemical and thermal properties, be used for a variety of purposes. Such materials are particularly useful for the production of polymer electrolyte membranes (PEMs) in PEM fuel cells.

Abstract: Crosslinkable polymers and crosslinked fluoropolymers are prepared from selected fluorinated dienes and monomers containing Br and I. Also disclosed are proton conductive membranes of these crosslinked fluoropolymers.

Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and is particularly useful as polymer electrolyte membrane (PEM) to produce membrane electrode units for PEM fuel cells.

Abstract: A co-assembly method includes, in an aqueous polyelectrolyte composition comprising: (a) a first polyelectrolyte dispersed in the composition and having a net electric charge of a first polarity, (b) a second polyelectrolyte dispersed in the composition and having a net electric charge of a second polarity, wherein the second polarity is opposite the first polarity, and (c) an electrolyte dissolved in the composition in a concentration effective to prevent co-assembly of the polyelectrolytes, the step of allowing co-assembly of the polyelectrolytes by: (1) decreasing the concentration of the electrolyte, or (2) forming an interface between the aqueous polyelectrolyte composition and a surface of a solid substrate or of a second liquid phase, wherein the surface has an affinity for at least one of the polyelectrolytes, or (3) decreasing the concentration of the electrolyte and forming such an interface.

Abstract: Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.

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

Abstract: Disclosed is an anion-exchange membrane which does not easily deteriorate even when used at high temperatures in a strong alkaline atmosphere. Also disclosed is a method for producing the anion-exchange membrane. The anion-exchange membrane is a microporous membrane which is composed of a water-insoluble resin and an anion-exchange resin filling the pores of the microporous membrane. The anion-exchange resin is composed of an anion-exchange resin wherein a quaternary ammonium salt group serving as an anion-exchange group is directly bonded to an aliphatic hydrocarbon chain, said anion-exchange resin being obtained by polymerizing and crosslinking a monomer composition which contains a crosslinking agent and a monomer component including a diallyl ammonium salt.

Abstract: The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described.

Abstract: Described is a process to prepare fluoropolymer organic-liquid dispersions containing a homogeneous mixture of reacted and unreacted sulfonyl halide groups. The dispersions are useful in the preparation of crosslinked membranes.

Abstract: The present invention relates to an improved method for making sulfonated block copolymers and to methods for making membranes from such block copolymers. In particular, the present invention relates to an improved method for making sulfonated block copolymers having at least two polymer end blocks that are resistant to sulfonation and at least one polymer interior block that is susceptible to sulfonation where the sulfonation agent is C2 to C8 acyl sulfate. In the improved process the residual carboxylic acid formed from the C2 to C8 acyl sulfate is converted to C1 to C4 alkyl esters by contacting the residual carboxylic acid with at least a 0.9:1 molar ratio of a C1 to C4 alcohol to residual carboxylic acid, resulting in an improved sulfonated block copolymer solution. The present invention further relates to the use of such sulfonated block copolymer solutions to prepare various membranes and other articles.

Abstract: Disclosed are methods of attaching biologically active compounds to a solid surface, comprising modifying the solid surface using triazine chloride and attaching the biologically active compound to the triazine moiety.

Abstract: An ion exchange membrane is prepared from a block copolymer comprising a hydrophobic polymer segment and a polar polymer segment. The ion exchange membrane is formed by placing a film layer in steam, water or an electric field at a temperature greater than about 40° C. for sufficient amount of time to develop a bicontinuous morphology. The ion exchange membrane is also formed from a film layer comprising a block copolymer and a solvent. The film layer is placed in an electric field at an elevated temperature and dried therein. The film layer is thereby converted into an ion exchange membrane with bicontinuous morphology. The ion exchange membrane prepared according to these processes exhibits improved mechanical and electrochemical properties.

Abstract: 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.

Abstract: An electrolyte membrane which comprises a cation exchange membrane made of a polymer having cation exchange groups and contains cerium ions is used as an electrolyte membrane for a polymer electrolyte fuel cell. In a case where the cation exchange membrane has sulfonic acid groups, the sulfonic acid groups are ion-exchanged, for example, with cerium ions so that cerium ions are contained preferably in an amount of from 0.3 to 20% of —SO3? groups contained in the cation exchange membrane. A membrane for a polymer electrolyte fuel cell capable of power generation in high energy efficiency, having high power generation performance regardless of the dew point of the feed gas and capable of stable power generation over a long period of time, can be provided.

Abstract: A polymer electrolyte membrane for a fuel cell that can maintain a stable performance for a long time, a method of manufacturing the same, and a fuel cell employing the same. The polymer electrolyte membrane includes at least one kind of a basic polymer and an acidic dopant. A dimensional change in the planar direction of the electrolyte membrane between a wet state and a dry state is 5% or less.

Abstract: An electrolyte membrane includes a nanocomposite ion complex that is a reaction product of a nanocomposite with a basic polymer. The nanocomposite includes a polymer having a sulfonic acid group and an unmodified clay. Either the unmodified clay has a layered structure and is dispersed in the polymer having the sulfonic acid group, and the polymer is intercalated between layers of the clay or the unmodified clay has an exfoliated structure and the exfoliated layers of the unmodified clay are dispersed in the polymer. The electrolyte membrane shows high mechanical strength, high ionic conductivity, and excellent methanol crossover impeding properties even when the degree of sulfonation of the polymer having the sulfonic acid group is high. When a methanol aqueous solution is used as a fuel, the fuel cell including the electrolyte membrane has a low methanol crossover, and thus, has a high operational efficiency and a long lifetime.

Abstract: The membrane electrode assembly 1 has an anode 10, a cathode 20, and an electrolyte membrane 30 disposed between the anode and cathode; the anode and cathode are gas diffusion electrodes; the electrolyte membrane contains a solid electrolyte in which a plurality of pores with mean pore diameters of 1 to 30 nm are formed; and the solid electrolyte has a backbone comprising organic groups having one or more metal atoms, oxygen atoms bonded to the metal atoms, and carbon atoms bonded to the metal atoms or oxygen atoms, and also has functional groups with ion-exchange capabilities that are bonded to the organic groups in the pores.

Abstract: Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N+(CH3)3OH? moiety. Other embodiments in accordance with the disclosure include alkali anion-exchange membranes (AAEMs) made from one of such polymers, anion fuel cells (AFCs) that encompass such AAEMs and components of such AFCs, other than the AAEM, that encompass one of such polymers.

Abstract: To provide a bipolar membrane featuring improved adhesion between an anion-exchange membrane and a cation-exchange membrane without accompanied by an increase in the membrane voltage. [Means for Solution] A bipolar membrane comprising a cation-exchange membrane and an anion-exchange membrane joined together facing each other, wherein at least one of the ion exchange membranes contains a chlorinated polyolefin.

Abstract: Described herein is a crosslinkable polymer based on trifluorostyrene, and its use in polymer electrolyte membranes thereof.

Abstract: A novel anion exchange polymer is provided. A method of making the anion exchange polymer includes reacting a tertiary amine, an acid inhibitor and a polyepoxide to form a quaternary ammonium monomer and polymerizing the quaternary ammonium monomer in the presence of a catalyst. The exchange polymer is prepared without using alkyl halides and can be used to make improved ion exchange materials that are chemically resistant and non-fouling.

Abstract: 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.

Abstract: Highly fluorinated ion-exchange polymers achieve dissolution in aqueous tetrahydrofuran at lower pressures and temperatures than in other solvents, with few or no side products being formed.

Abstract: A proton conductive polymer electrolyte includes an acidic functional group-containing aromatic hydrocarbon polymer and an electron donor functional group-containing compound. When used in a fuel cell, the proton conductive polymer electrolyte provides a long-term stable power generating performance at an operating temperature from 100° C. to 200° C. in non-humidified conditions or a relative humidity of 50% or less.

Abstract: Electronic short-circuiting between the anode and cathode in Li ion accumulators or batteries, an electronic separate of anode must be present with minimum electronic conductivity. To this end, in general a separating layer in the form of porous films, non-woven fabrics or nets made of polypropylene or similar polymers and containing Li ion-conducting salts and ceramic particles is used. Disadvantages of the known separating layers are the low thermal resistance and thereby embodiments with a high energy content, expensive manufacturing processes and complex interaction of the chemical substances used in the separating layers.

Abstract: The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described.

Abstract: Ionic polymers are made from selected partially fluorinated dienes, in which the repeat units are cycloaliphatic. The polymers are formed into membranes.

Abstract: The present invention refers to an inorganic proton conducting electrolyte consisting of a mesoporous crystalline metal oxide matrix and a heteropolyacid bound within the mesoporous matrix. The present invention also refers to a fuel cell including such an electrolyte and methods for manufacturing such inorganic electrolytes.

Abstract: The present invention provides a polymer electrolyte membrane with excellent proton conductivity in its thickness direction. Preferably, the polymer electrolyte membrane contains a polymer compound comprising an ionic segment having an ionic functional group and a nonionic segment having substantially no ionic functional group, and the phase containing ionic segments as a main component and the phase containing nonionic segments as a main component are phase-separated, and in the surface region thereof, the change in the amount of the ionic segment from the surface toward the interior substantially decreases monotonically.

Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and is particularly useful as polymer electrolyte membrane (PEM) to produce membrane electrode units for PEM fuel cells.

Abstract: A method for preparing a polymer anion-exchange membrane by forming a chloromethylated polymer, quaternizing the chloromethylated polymer, and casting. The method is simple to use and the obtained polymer anion-exchange membrane has good mechanical properties, improved thermal and chemical stability, as well as high ion-exchange capacity.

Abstract: A proton exchange membrane and method for formation the same is disclosed. When forming the proton exchange membrane, first, a bismaleimide and barbituric acid are copolymerized to form a hyper-branched polymer. Next, the solvent of the sulfonated tetrafluorethylene copolymer (Nafion) aqueous solution is replaced with dimethyl acetamide (DMAc). 10 to 15 parts by weight of the hyper-branched polymer is added to 90 to 85 parts by weight of the Nafion in the DMAc solution, stood and heated to 50° C. for inter-penetration of the hyper-branched polymer and the Nafion. The heated solution is coated on a substrate, baked, and pre-treated to remove residue solvent to complete formation of the proton exchange membrane.

Abstract: A fuel cell membrane is described comprising at least one sulfonated aromatic polyether copolymer comprising a poly-arylen-ether-ketone (PEK) moiety or sulfonated derivatives thereof, deriving from spiro-bis-indane or 4,4?-(hexafluoroisopropylidene)diphenol (BPAF), and an arylene-sulfone, or an arylene-ketone or sulfonated derivative thereof; said copolymer having the following formula (1): wherein Ar1 has formula, wherein X is spiro-bis-indanile (SBI) (b) or BPAF (c) having formulas: and wherein Y is H or SO3H, and Ar2 has formula wherein W is CO or SO2, and Y is H or SO3H, wherein Z is OH or Cl; and wherein at least one between Ar1 or Ar2 comprise at least one sulfonic group; and wherein n is an integer comprised between 2 and 50. A method for the production of such membrane is also described.

Abstract: An ion conducting polymeric structure suitable for fuel cell applications is provided. The polymeric structure comprises a non-homogenous polymeric layer. The non-homogeneous layer is a blend of a first polymer comprising cyclobutyl moiety; and a second polymer having a non-ionic polymer segment. The weight ratio of the first polymer to the second polymer varies as a function of position within the non-homogenous layer. The blend composition may be cast into an electrolyte membrane that can be used to prepare electrochemical cells such as batteries and fuel cells.

Abstract: A composition includes a first polymer having monomers each containing an imidazole group, and a second polymer, the first and second polymers being a polymer blend. The first polymer, the second polymer, or both may be cross-linked. The carbonized composition, polymeric and carbon membranes (either in the form of a flat sheet or a hollow fiber) made from the composition are also described.

Abstract: An electrolyte membrane includes a cross-linked reaction product of a benzoxazine monomer and a cross-linkable compound. The electrolyte membrane is impregnated with 300 to 600 parts by weight of phosphoric acid based on 100 parts by weight of the electrolyte membrane, and has a yield strain 0.5% or less, and a yield stress 0.3 Mpa or less. The cross-linked material has a strong acid trapping ability with respect to the benzoxazine compound and excellent mechanical properties due to a cross-linkage. Also, the solubility of the cross-linked material in polyphosphoric acid is low, thereby showing excellent chemical stability. Accordingly, when the cross-linked material is used, an electrolyte membrane having an excellent liquid supplementing ability and excellent mechanical and chemical stability at a high temperature can be obtained.

Abstract: Block copolymer that can be formed into an ion—Conductive membrane are provided. The block copolymer of the invention includes a first polymer block and a second polymer block attached to the first polymer block. The second polymer block has a main polymer chain and one or more side chains extending from the main polymer chain. The one or more side chains include at least one substitutent for proton transfer. Block copolymers utilizing phosphoric acid groups are also provided.

Abstract: The present invention provides an inexpensive solid-state polymer electrolyte membrane to be used in a solid-state polymer electrolyte fuel cell, which can be manufactured by using inexpensive raw materials through a simpler chemical synthesis process, achieves good heat resistance and demonstrates superior proton conductivity at low humidity. A primary constituent of the solid-state electrolyte polymer film to be used in a solid-state polymer electrolyte fuel cell according to the present invention is a hyperbranched polymer having an acidic functional group such as sulfonic acid disposed at the terminal of a side chain thereof. The hyperbranched polymer may be, for instance, poly[(bis(oligo-ethylene glycol) benzoate)].