Abstract: A method of making a membrane including forming a porous support, the porous support including a polymer and a reinforcing agent, and applying an ion-exchange polymer to the porous support, a membrane including a porous support and an ion-exchange polymer, wherein the porous support includes a polymer and a reinforcing agent and the ion-exchange polymer is applied to the porous support, and the porous support is formed by forming a first mixture including a reinforcing agent and at least one of a polymer and a polymer precursor and processing the first mixture to form the porous support, and a fuel cell adopting the same.

Abstract: A polymer electrolyte forming composition includes a trialkoxysilane containing an epoxy group, polyethyleneimine, and at least one of heteropolyacid and trifluoromethanesulfoneimid

Abstract: A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): where each of R1, R2 and R3 is F, H or CH3; X is a hydroxy group or a trifluoromethyl group; m is an integer greater than zero; n is an integer greater than zero; and p, q and r are zero or integers greater than zero.

Abstract: A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): where each of R1, R2 and R3 is F, H or CH3; X is a hydroxy group or a trifluoromethyl group; m is an integer greater than zero; n is an integer greater than zero; and p, q and r are zero or integers greater than zero.

Abstract: A new composite electrolyte membrane that has excellent hydrogen ion conductivity, and excellent methanol exclusion, a manufacturing method for such a composite electrolyte membrane, and a fuel cell using such a composite electrolyte membrane are provided. The composite electrolyte membrane comprises a hydrogen ion conductive polymer membrane and an exfoliate layer comprising layered hydrogen ion conductive inorganic materials that are disposed on a surface of the polymer membrane.

Abstract: A supported catalyst, an electrode including the catalyst, and a fuel cell using the electrode are provided. The supported catalyst comprises a carbon-based catalyst support, catalytic metal particles that are adsorbed onto a surface of the carbon-based catalyst support, and an ionomer that is chemically or physically adsorbed to the surface of the carbon-based catalyst support and has a functional group on an end that is capable of providing proton conductivity. In the supported catalyst, the catalyst support performs the function of transporting protons in an electrode. When using an electrode prepared using the supported catalyst, a fuel cell having improved energy density and fuel efficiency may be prepared.

Abstract: The present invention relates to a modified inorganic material with excellent cation exchange capacity. In addition, the invention relates to a method of preparing the modified inorganic material, a composite electrolyte membrane comprising the modified inorganic material powder that has excellent methanol-repelling ability, and a fuel cell comprising the composite electrolyte membrane. The modified inorganic material includes an inorganic material, and a cation exchanger bonded to the inorganic material.

Abstract: The invention provides and a highly-dispersed supported catalyst that has a reduced average particle size of catalytic metal particles and is also supported by a porous support material. A method of preparing a supported catalyst that can reduce the average particle size of catalytic metal particles supported by a support material includes first mixing a charged support material with a solution containing a polymer electrolyte having a charge opposite to that of the support material to adsorb the polymer electrolyte on the support material. Next, the support material having the polymer electrolyte adsorbed thereon is mixed with a solution containing a catalytic metal precursor ion having a charge opposite to that of the polymer electrolyte to adsorb the catalytic metal precursor ion on the support material having the polymer electrolyte adsorbed on it.

Abstract: A hydrogen ionic conductive inorganic material having a layered structure, wherein a moiety containing a functional group with hydrogen ionic conductivity is introduced between layers of an inorganic material having a nano-sized interlayer distance. A polymer nanocomposite membrane including a reaction product of the hydrogen ionic conductive inorganic material and a conductive polymer, and a fuel cell using the same, are also provided. In the polymer nanocomposite membrane, a conductive polymer may be intercalated to a hydrogen ionic conductive inorganic material having a layered structure or products exfoliated from an inorganic material having a layered structure are dispersed in a conductive polymer.

Abstract: A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): 1

Abstract: A fuel amount control system of a fuel cell includes a fuel storage unit that stores the fuel to be supplied to the anode, a diluent storage unit that stores a diluent generated as a result of the chemical reaction in the cathode, a fuel mixing unit that mixes the fuel supplied from the fuel storage unit and the diluent supplied from the diluent storage unit to supply a fuel mixture solution to the anode, a sensor located inside the fuel mixing unit, which has a various volume that depends on the concentration of the fuel in the fuel mixture solution and outputs an electrical signal according to a volume variation, and a control unit that receives the electrical signal output from the sensor and outputs electrical signals to open and close the fuel storage unit and the diluent storage unit such that the fuel mixture solution having an appropriate concentration is supplied from the fuel mixing unit to the fuel cell stack.

Abstract: A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): where each of R1, R2 and R3 is F, H or CH3; X is a hydroxy group or a trifluoromethyl group; m is an integer greater than zero; n is an integer greater than zero; and p, q and r are zero or integers greater than zero.

Abstract: The present invention provides a method for producing a membrane and electrode assembly (MEA) of a fuel cell, the method comprising: forming a composition for forming a catalyst layer by mixing a polymer ionomer, an alcohol solvent, and a polar organic solvent having a boiling point of 30 to 200° C. with a metal catalyst; coating the composition for forming a catalyst layer on both surfaces of a polymer electrolyte membrane to form electrode catalyst layers; and arranging electrode supports on the electrode catalyst layers. Also, the present invention provides an MEA of a fuel cell that is produced according to the method and a fuel cell comprising MEA of a fuel cell.

Abstract: A polymer electrolyte and a fuel cell employing the polymer electrolyte are provided. The polyer electrolyte includes: an ionic conductive polymer membrane; a porous support having nano-sized pores; and inorganic conductive nano-particles including an ionic conductive material impregnated into the porous support, wherein the inorganic conductive nano-particles are impregnated into microchannels formed by aggregation of polar portions of the ionic conductive polymer membrane, and/or between polymer backbones of the ionic conductive polymer membrane.

Abstract: A reinforced composite ionic conductive polymer membrane, and a fuel cell with improved efficiency that includes the reinforced composite ionic conductive polymer membrane are provided. The reinforced composite ionic conductive polymer membrane includes a porous support, an ion-exchange polymer that impregnates the porous support; and a reinforcing agent that impregnates the porous support, the reinforcing agent including a moisture retentive material and/or a catalyst for facilitating oxidation of hydrogen.

Abstract: A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula (1): 1