USE OF A MATERIAL IMPARTING PROTON CONDUCTIVITY IN THE PRODUCTION OF FUEL CELLS

METHOD FOR THE PRODUCTION OF AN ELECTROCHEMICAL CELL

Electrolyte composition, solid electrolyte membrane, solid polymer fuel cell and manufacturing method for solid electrolyte membrane

Compound for solid polymer electrolyte membrane

PROTON-CONDUCTING MEMBRANE AND ITS USE

Ion exchange membrane having lamellar morphology and process of making the same

Fuel cell with spatially non-homogeneous ionic membrane

Polyelectrolyte membranes made of poly(perfluorocyclobutanes) with pendant perfluorosulfonic acid groups and blends with poly(vinylidene fluoride)

Perfluorocyclobutane based water vapor transfer membranes

Electrolyte membrane for polymer electrolyte fuel cell and method of manufacturing the same

Fuel cells

Proton-conducting membrane and use thereof

PROTON EXCHANGE MEMBRANES

Modified hyper-branched polymer and proton exchange membrane applied with the same, and method for manufacturing the proton exchange membrane

METHOD FOR OPERATING A FUEL CELL

Polymer membranes

Vinyl sulfonic acid, polymer thereof, and production method thereof

Proton-conducting membrane and its use

Proton exchange polymer membrane using surface treatment technique based on direct fluorination, membrane-electrode assembly, and fuel cell comprising the same

Polymer Composition, Polymer Membrane Comprising the Polymer Composition, Process for Preparing it and Fuel Cell Comprising the Membrane

Fuel cell electrolyte membrane with basic polymer

Polybenzoxazole membranes prepared from aromatic polyamide membranes

Solid polymer electrolyte membrane and production method of the same

POLYMER ELECTROLYTE COMPOSITION

POLYBENZOXAZOLE MEMBRANES PREPARED FROM AROMATIC POLYAMIDE MEMBRANES

ION CONDUCTIVE COMPOSITION, ION CONDUCTIVE FILM CONTAINING THE SAME, ELECTRODE CATALYST MATERIAL, AND FUEL CELL

AQUEOUS FORMULATIONS COMPRISING POLYAROMATIC COMPOUNDS BEARING ACID GROUPS AND/OR SALTS OF ACID GROUPS, PROCESS FOR PRODUCING THEM, FURTHER FORMULATIONS PRODUCED USING THE AQUEOUS FORMULATIONS AND USE OF THE FURTHER FORMULATIONS IN FUEL CELLS

METHOD FOR MAKING PROTON CONDUCTING MEMBRANES FOR FUEL CELLS BY RADIOGRAFTING

Proton conducting membranes for fuel cells having a proton gradient and methods for preparing said membranes

Polymer electrolyte membrane and fuel cell comprising same

Cross-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

Polymers for use in fuel cell components

PROTON-CONDUCTING POLYMER MEMBRANE COMPRISING POLYMERS CONTAINING PHOSPHONIC ACID GROUPS AND ITS USE IN FUEL CELLS

Rigidity & Inplane Electrolyte Mobility Enhancement for Fuel Cell Eletrolyte Membranes

FUEL CELL AND METHOD FOR PRODUCTION THEREOF

Proton-conducting polymer membrane comprising polyazole blends and its use in fuel cells

MEMBRANE ELECTRODE ASSEMBLY HAVING PROTECTIVE BARRIER LAYER AND METHOD FOR MITIGATING MEMBRANE DECAY

High temperature stable polyelectrolytes having backbone aromatic groups

Nanoengineered membrane-electrode assembly for high-temperature proton exchange membrane fuel cells

Crosslinked aromatic polymer electrolyte membrane

ELECTRODE CATALYST FOR FUEL CELL, PROCESS FOR PRODUCING THE SAME AND SOLID POLYMER FUEL CELL COMPRISING THE SAME

Process for producing a proton-conducting, polyazole-containing membrane

Electrode composite material

Ionic layer with oxygen evolution reaction catalyst for electrode protection

Aromatic compound and sulfonated polyarylene polymer

CATALYST FOR FUEL CELL ELECTRODE, PROCESS FOR PRODUCING CATALYST FOR FUEL CELL ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

Production of a functionalized polytriazole polymer

Hyper-branched polymer, electrode including the polymer, electrolyte membrane including the polymer, and fuel cell including the electrode and/or the electrolyte membrane

COPOLYMER, POLYMER ELECTROLYTE, AND USE THEREOF

Proton-conducting membrane and the use of the same

Electrode electrolyte for polymer-type fuel cell, and use thereof

Proton exchange membrane composition

COMPOSITE MEMBRANE AND METHOD FOR MAKING

Polymer membrane, method for the production and use thereof

POLYMER ELECTROLYTE, POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL

Membrane electrode assemblies

Hyper-branched polymer, electrode for fuel cell including the hyper-branched polymer, electrolyte membrane for fuel cell including the hyper-branched polymer, and fuel cell including at least one of the electrode and the electrolyte membrane

Composites and Composite Membranes

Monomers and polymers carrying imidazole and benzimidazole groupings, and proton exchange membrane containing the same for the production of a fuel cell

Electrolyte for fuel cell, electrolyte membrane for fuel cell, binder for fuel cell, membrane electrode assembly for fuel cell, and fuel cell

Polybenzoxazole Membranes Prepared From Aromatic Polyamide Membranes

Fuel cell system operated with liquid gas

Fullerene based proton conductive materials

Polymer membrane for fuel cell, method of preparing the same, membrane-electrode assembly including the same, and fuel cell system including the same

Composites and composite membranes

Solid polymer electrolyte and process for making same

Functionalized Main Chain Polymers

POLYMER ELECTROLYTE MEMBRANE FOR DIRECT METHANOL FUEL CELL AND DIRECT METHANOL FUEL CELL

Separating membrane for fuel cell

Fullerene based proton conductive materials

POLYMER ELECTROLYTE COMPRISING INORGANIC CONDUCTIVE NANO-PARTICLES AND FUEL CELL EMPLOYING THE POLYMER ELECTROLYTE

POLYMER ELECTROLYTE MEMBRANE, METHOD OF PREPARING THE SAME, AND FUEL CELL INCLUDING THE POLYMER ELECTROLYTE MEMBRANE

Polymer electrolyte membrane with functionalized nanoparticles

Long-life membrane electrode assemblies with gasket and frame

Proton-conducting compound and proton-conducting polymer

IONOMERS WITH IONOGENIC GROUPS IN THE SIDECHAIN

ANION EXCHANGE MEMBRANES

Membrane-electrode assembly for solid polymer electrolyte fuel cell

Polymer electrolyte fuel cell, membrane electrode assembly and manufacturing method thereof

Method for producing a polymer electrolyte membrane

Multilayer electrolyte membrane

Development and characterization of novel proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups

Gradient reinforced proton exchange membrane

Laminated electrolyte membrane, method of preparing the same, and membrane electrode assembly and fuel cell including the laminated electrolyte membrane

Polymer electrolyte membrane and method for producing polymer electrolyte membrane

ION EXCHANGE POLYMER

Alkaline membrane fuel cells and apparatus and methods for supplying water thereto

Method for producing a film of an aromatic amide oxadiazole polymer containing an oxadiazole structure and the film so produced

Polymer electrolyte composition, polymer electrolyte membrane, membrane electrode assembly and solid polymer electrolyte-based fuel cell

Oxidation-stabilised polymer electrolyte membrane for fuel cells

Polymer electrolyte membrane composed of aromatic polymer membrane base and method for producing the same

Electrolyte membranes and methods of use

Proton exchange membranes for fuel cell applications

Polymer and membrane-electrode assembly for fuel cell, and fuel cell system including the same

POLYMERIC MEA FOR FUEL CELL

Crosslinked polymer electrolyte and method for producing same

Polymer membrane for a fuel cell, a method of preparing the same, and a membrane-electrode assembly fuel cell system comprising the same

Carbon-polymer electrochemical systems and methods of fabricating them using layer-by-layer technology

Polyarylene polymers and ion conducting functionalized polyarylene polymers resulting from pairing bis-diene arylenes and bis-dienophile arylenes via a diels-alder reaction

System and method for operating a high temperature fuel cell as a back-up power supply with reduced performance decay

Membrane electrode assembly and fuel cell

POLYMER ELECTROLYTE FUEL CELL

Polymer electrolyte membrane with coating layer of anion binding agent and fuel cell using same

Oligomers and polymers containing sulfinate groups and method for the production thereof

Phosphonic acid-containing blends and phosphonic acid-containing polymers

PROCESS FOR THE MANUFACTURE OF AN ION-CONDUCTING POLYMER MEMBRANE FOR A FUEL CELL

Proton-conducting membrane and use thereof

Proton-conducting membrane and use thereof

REINFORCED COMPOSITE MEMBRANE FOR POLYMER ELECTROLYTE FUEL CELL

Membrane preparation method comprising the extrusion of a thermoplastic polymer bearing alkaline groupings

Polymer electrolyte emulsion and use thereof

Highly conducting solid state ionics for electrochemical systems and methods of fabricating them using layer-by layer technology

Electrolyte, production process therefor, electrolyte membrane, production process therefor, catalyst layer and fuel cell

Compound having oxadiazole structure and a dehydration-cyclization method for producing the same

Solid proton conductor including acid treated oxide nanoparticles and fuel cell including the same

MEMBRANE FOR FUEL CELLS, CONTAINING POLYMERS COMPRISING PHOSPHONIC ACID GROUPS AND/OR SULFONIC ACID GROUPS, MEMBRANE UNITS AND THE USE THEREOF IN FUEL CELLS

Electrolyte membrane and method of selecting the same

ION CONDUCTING COPOLYMERS WITH ELASTOMERIC AND POLYARYLENE SEGMENTS

AROMATIC COMPOUND HAVING FLUORENE SKELETON AND POLYARYLENE HAVING SULFONIC ACID GROUP

Nitrogenated aromatic compound, process for production of the same, polymer, and proton conductive membrane

Room temperature crosslinkable ion conductive polymer system

Proton conducting polymer membrane, method for production thereof and fuel cell therewith

Extrusion of a thermoplastic polymer bearing acid ionic groupings

Polyphenylene-containing electrode paste

Phosphorus 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

Naphthoxazine 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

Reinforced ion-conductive membranes

Electrolyte membrane containing a crosslinked polybenzoxazine-based compound for fuel cell and fuel cell using the same

SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

Polybenzimidazole-base complex, crosslinked material of polybenzoxazines formed thereof, and fuel cell using the same

Polymer electrolyte membrane and membrane-electrode assembly for fuel cell and fuel cell system including same

Benzoxazine-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

Hybrid membranes, method for production of hybrid membranes and fuel cells using such hybrid membranes

Phosphorous containing benzoxazine-based monomer, polymer thereof, electrode for fuel cell including the same, electrolyte membrane for fuel cell including the same, and fuel cell employing the same

Highly proton-conductive polymer electrolyte membranes that excel in mechanical strength and a process for producing the same

Solid electrolyte with high ion-conductivity and method for manufacturing the same, and electrochemical system using solid electrolyte

ANHYDROUS PROTON CONDUCTOR BASED ON HETEROCYCLE ATTACHED TO A POLYMER BACKBONE

Membrane electrode assembly and fuel cell using the same

PROTON CONDUCTOR FOR FUEL CELL AND FUEL CELL INCLUDING THE SAME

REINFORCED ELECTROLYTE MEMBRANE COMPRISING CATALYST FOR PREVENTING REACTANT CROSSOVER AND METHOD FOR MANUFACTURING THE SAME

LIQUID MATERIALS FOR USE IN ELECTROCHEMICAL CELLS

Oligomeric and polymeric aromatic phosphonic acids, their blends, processes for preparing them and uses as polyelectrolytes

Ion-dissociative functional compound, method for production thereof, ionic conductor, and electrochemical device

Polymer Membranes

Method for the production of a sulfonated poly (1, 3, 4-oxadiazole) polymer

Solid Electrolyte, Membrane and Electrode Assembly, and Fuel Cell

FUEL CELL MEMBRANES, GELS, AND METHODS OF FABRICATION

Crosslinked aromatic polymer electrolyte membrane and method for producing same

Electrolyte

Polymer Electrolyte Membrane for Fuel Cell and Membrane-Electrode Assembly and Fuel Cell Including the Same

Solid polymer electrolyte, method for manufacturing the same and use thereof

Polyarylene and Method for Producing the Same

Electrolyte Membrane and Fuel Cell Employing Said Electrolyte Membrane

POLYMER MEMBRANE, METHOD FOR THE PRODUCTION AND USE THEREOF

Membrane-Electrode Units and Fuel Cells Having a Long Service Life

Polymer electrolyte membrane and membrane electrode assembly

PROTON-CONDUCTING MEMBRANES FOR ELECTROCHEMICAL DEVICES, AND RELATED ARTICLES AND PROCESSES

Partially sulfonated polybenzimidazole based polymer, method for preparing the same, MEA for fuel cell using the polybenzimidazole based polymer and method for preparing the same

Microstructures and methods of fabrication thereof

Proton conductors based on aromatic polyethers and their use as electolytes in high temperature pem fuel cells

Ion/electron-conducting composite polymer membrane, manufacturing processes thereof and planar fuel cell core comprising it

Microstructures and Methods of Fabrication Thereof

Composite porous membrane and method for producing the same

Polymer comprising terminal sulfonic acid group, and polymer electrolyte and fuel cell using the same

MATERIALS FOR THE MANUFACTURE OF PROTON CONDUCTING MEMBRANES, METHODS OF MAKING THE SAME, AND USES THEREOF

Proton conducting membrane of polymer blend and process for preparing poly(amide imide) used therein

Fuel Cells With Reduced Weight and Volume

Production of a functionalized polytriazole polymer

Enhancing proton conductivity of proton exchange membranes

Benzimidazole-Substituted Polybezimidazoles as Initial Material For Producing Proton-Conducting Membranes

Additives for fuel cell layers

Electrolytic membrane

Composition containing oxocarbon and use thereof

Poly(arylene ether) copolymers containing pyridine units as proton exchange membranes

CONSTITUENT MEMBER FOR MEMBRANE ELECTRODE ASSEMBLY, MEMBRANE ELECTRODE ASSEMBLY, POLYMER ELECTROLYTE FUEL CELL, AND METHOD FOR PRODUCING CONSTITUENT MEMBER AND MEMBRANE ELECTRODE ASSEMBLY

Polymer electrolyte membrane for fuel cell, method of manufacturing the same, and fuel cell employing the same

Sulfonyl grafted heterocycle materials for proton conducting electrolytes

High-molecular-weight polyazoles

Development and characterization of novel proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups

Perfluoropolyether rubber composition and ion-conducting polymer electrolyte membrane

Polysulfone, electrolyte membrane using the same, and fuel cell using the electrolyte membrane

Highly durable electrode catalyst layer

Method for producing a membrane electrode including forming the membrane in situ

Oligomers and Polymers Containing Sulfinate Groups, and Methods for Producing the Same

Electrochemical devices comprising proton conducting mediums

Polymer electrolyte membrane comprising inorganic nanoparticle bonded with proton-conducting group and solid acid, fuel cell including the same, and method of preparing the polymer electrolyte membrane

Process for Production and Apparatus for Production of Laminate

Fuel cell fluid distribution system

Polymer membrane, membrane-electrode assembly for fuel cell, and fuel cell system including same

Organic/inorganic composite electrolyte membranes using zeolite and fuel cell comprising the same

Development and characterization of novel proton conducting aromatic polyether type copolymers bearing main and side chain pyridine groups

Membrane electrode unit for the electrolysis of water

Proton-conducting polyamide polymer membrane and method for production

Aromatic polyether copolymers and polymer blends and fuel cells comprising same

High temperature polymer electrolyte membranes and membrane electrode assemblies based on blends of aromatic polyethers

Proton-conducting membrane and use thereof

Membrane electrode assembly for fuel cell and fuel cell employing the same

Proton-conducting membrane and the use thereof

Polymer electrolyte; and an electrochemical device equipped with such a polymer electrolyte

High-performance membrane electrode unit and the use thereof in fuel cells

Proton-conducting electrolyte membrane, production process thereof, and membrane-electrode assembly and fuel cell using the same

Method for the production of membrane/electrode units

Hydrocarbon type polymer electrolyte, membrane/electrode assembly, and fuel cell power source

Asymmetric polymer film, method for the production and utilization thereof

HYDROGEN CYANO FULLERENE CONTAINING PROTON CONDUCTING MEMBRANES

Nanocomposite electrolyte membrane and fuel cell employing the same

Polybenzazole block copolymer

Ether nitrile co-polymers containing sulfonic acid groups for PEM application

Fuel Cell with Non-Fluorinated or Partly Fluorinated Membrane and Method for Preparing Said Membrane

Membrane Electrode Assemblies and Highly Durable Fuel Cells

Polybenzoxazines, electrolyte membrane comprising the same, and fuel cell employing the electrolyte membrane

Trimetaspheres for Ion Selective Membranes

Reinforced polymer electrolyte membrane

Proton Exchange Composite Membrane with Low Resistance and Preparation Thereof

Fullerene based proton conductive materials

Membrane Electrode Units and Fuel Cells with an Increased Service Life

MEMBRANE-ELECTRODE ASSEMBLY FOR A DIRECT OXIDATION FUEL CELL AND A DIRECT OXIDATION FUEL CELL SYSTEM COMPRISING THE SAME

Membrane-electrode unit and fuel elements with increased service life

Membrane-electrode assembly for mixed reactant fuel cell and mixed reactant fuel cell system comprising same

Method to manufacture composite polymer electrolyte membranes coated with inorganic thin films for fuel cells

Reinforced composite electrolyte membrane for fuel cell

Method for manufacturing composite membrane for polymer electrolyte fuel cell

PERFORMANCE ENHANCEMENT VIA WATER MANAGEMENT IN ELECTROCHEMICAL CELLS

Fullerene based proton conductive materials

Proton conductive electrolyte and fuel cell comprising the same

Functionalized main chain polymers

Stack for mixed reactant fuel cell and mixed reactant fuel cell system including the same

Fuel cell electrolyte, membrane electrode assembly, and method of manufacturing fuel cell electrolyte

Polymer electrolyte membrane, method of manufacturing the same and fuel cell including the polymer electrolyte membrane

Method for starting high temperature polymer electrolyte membrane fuel cell stack and fuel cell system using the same method

POLYMER MEMBRANE, METHOD OF PREPARING THE SAME AND FUEL CELL EMPLOYING THE SAME

APPARATUS AND METHODS FOR ELECTROCHEMICAL HYDROGEN MANIPULATION

Membrane-electrode assembly for mixed reactant fuel cell and mixed reactant fuel cell system including same

Polymer electrolyte membrane, method of preparing the same and fuel cell including the same

Oligomers and polymers containing sulfinate groups and method for the production thereof

Electrolyte membrane using polybenzoxazine based compound and method of manufacturing the same

Fuel cell, polymer electrolyte and ion-exchange resin for the same

Fuel cell system with electrochemical anode exhaust recycling

Polymer electrolyte membrane, method of preparing the same and fuel cell employing the same

Membrane-electrode assembly for solid polymer electrolyte fuel cell and method for producing the same

Proton exchange membranes using cycloaddition reaction between azide and alkyne containing components

Gas diffusion electrodes, method for the production of gas diffusion electrodes, and fuel cells using said gas diffusion electrodes

High-molecular-weight polyazoles used as proton conducting membranes

Novel metal (III) -chromium-phosphate complex and use thereof

Compound, solid polymer electrolyte membrane, electrolyte membrane-electrode assembly, and solid polymer fuel cell

Polybenzoxazine-based compound, electrolyte membrane including the same, and fuel cell employing the electrolyte membrane

Electrolyte membrane, electrode, and fuel cell

Polymer electrolyte as well as polymer electrolyte membrane, membrane electrode assembly and polymer electrolyte fuel cell using the same

Catalyst for cathode of fuel cell, and membrane-electrode assembly for fuel cell

Reinforced ion-conductive membranes

Cathode catalyst for fuel cell, membrane-electrode assembly for fuel cell including same and fuel cell system including same

Supported ruthenium cathode catalyst for fuel cell

Neutral protic-salt electrolytes and protic-salt imbibed polymer membranes for high temperature fuel cell applications

Proton conducting membrane and process for producing the same

Branched multiblock polybenzimidazole-benzamide copolymer and method for preparing the same, electrolyte membrane and paste/gel prepared therefrom

Mixture, cation conductor and electrochemical device using those

Proton conductive membrane comprising a copolymer

Polyimide resin, method of producing polyimide resin, and electrolyte membrane, catalyst layer, membrane/electrode assembly and device each containing polyimide resin

Polymer electrolyte membrane and fuel cell including the polymer electrolyte membrane

Polymer electrolyte membrane, method of manufacturing the same and fuel cell using the polymer electrolyte membrane

Ion-conducting composite membranes

Oligomer solid acid and polymer electrolyte membrane including the same

Proton conductive electrolyte membrane, method of preparing the same and fuel cell including the proton conductive electrolyte membrane

Fullerene based proton conductive materials

Membrane-electrode assembly, polymer membranes for a membrane-electrode assembly, polymer electrolyte fuel cells, and methods for the production thereof

Multi-layered thin film hydrogen fuel cell system

Solid acid, polymer electrolyte membrane including the same, and fuel cell using the polymer electrolyte membrane

Polymer membrane for fuel cell, method of preparing the same, membrane-electrode assembly including the same, and fuel cell system including the same

Electrolyte membrane for fuel cell utilizing nano composite

Process for manufacturing a catalyst-coated polymer electrolyte membrane

Hydrophilic membrane and associated method

Membrane electrode assembly for a fuel cell

Solid polymer electrolyte and process for making same

High temperature polymer electrolyte membranes

Fuel cell electrolyte membrane with basic polymer

Solvent-resistant membranes from solvent-inert polyimides and polyketones

Proton-conducting polymer membrane containing polymers with sulfonic acid groups that are covalently bonded to aromatic groups, membrane electrode unit, and use thereof in fuel cells

Proton conducting titanate, polymer nano-composite membrane including the same, and fuel cell adopting the polymer nano-composite membrane

Fuel cell membrane and fuel cell system with integrated gas separation

Direct oxidation fuel cell system

Polyelectrolyte membranes as separator for battery and fuel cell applications

Membrane-electrode structure for solid polymer fuel cell and solid polymer fuel cell

Membrane-electrode assembly for solid polymer electrolyte fuel cell

Membrane electrode assembly for solid polymer electrolyte fuel cell

Membrane-electrode assembly for solid polymer electrolyte fuel cell

Polymer membrane for a fuel cell, a method of preparing the same, and a membrane-electrode assembly fuel cell system comprising the same

Sulfonated aromatic polyethers, process for production thereof, and electrolyte membranes

Polymer membrane and membrane-electrode assembly for fuel cell and fuel cell system comprising same

Polymer electrolyte for a fuel cell, a method of producing the same, and a fuel cell system comprising the same

Electrolyte for fuel cell, membrane electrode assembly, fuel cell stack and fuel cell system

Membrane electrode assembly, fuel cell stack and fuel cell system

Polymer electrolyte fuel cell

Membrane-electrode assembly for solid polymer electrolyte fuel cell

Polymer blend comprising ion-conducting copolymer and non-ionic polymer

Membrane-electrode assembly for solid polymer electrolyte fuel cell and method of producing the same

Polymer electrolyte membrane and method of producing the same

Solid electrolyte, membrane and electrode assembly, and fuel cell

Redox fuel cell using methanol

Portion conductive electrolyte, method of preparing the same, electrode for fuel cell, method of manufacturing the electrode, and fuel cell including the same

Proton conducting inorganic material, polymer nano-composite membrane including the same, and fuel cell adopting the polymer nano-composite membrane