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7045241 |
Proton conductive solid polymer electrolyte and method for producing the same
A monomer to produce polybenzimidazole is dissolved in polyphosphoric acid. For example, polysulfated phenylene sulfonic acid (acidic group-possessing polymer) is further dissolved in this...
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7045240 |
Power generating apparatus having a proton conductor unit that includes a fullerene derivative
A power generating apparatus includes a proton conductor unit, containing a fullerene derivative, a hydrogen electrode bonded to one surface of the proton conductor unit, an oxygen electrode bonded...
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7041272 |
Systems and processes for providing hydrogen to fuel cells
A process and system for providing a hydrogen-containing gas stream to a fuel cell anode that includes providing a hydrogen-containing gas stream that includes carbon monoxide, introducing the...
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7041409 |
Low equivalent weight ionomer
An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight; below 950, preferably between 625 and 850, and most preferably between about 700 and about 800;...
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7037614 |
Electrolyte composition, solid electrolyte membrane, solid polymer fuel cell and manufacturing method for solid electrolyte membrane
An electrolyte composition that shows low methanol cross-over and exhibits high proton conductivity when used as a solid electrolyte for solid polymer fuel cells or the like, and a solid...
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7033637 |
Epitaxial thin films
Epitatial thin films for use as buffer layers for high temperature superconductors, electrolytes in solid oxide fuel cells (SOFC), gas separation membranes or dielectric material in electronic...
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7033690 |
Solid oxide fuel cell
The objective of the present invention is to provide a solid oxide fuel cell which has an improved efficiency with a solid electrolyte layer having an improved ionic conductivity, while maintaining...
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7029782 |
Electrochemical hydrogen flow rate control system
An electrochemical hydrogen flow rate control system is provided. The system has an electrochemical cell and a hydrogen flow rate control unit. The electrochemical cell includes a first electrode...
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7030206 |
Polymer electrolyte and proton-conducting membrane
To provide a sulfonic acid group-containing polymer having improved hot water resistance and radical resistance (durability), a solid polymer electrolyte including the polymer, and a...
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7029559 |
Proton exchange composite membranes, composite solutions, and method for manufacturing and fuel cell using the same
An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol...
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7022426 |
Solid polymer fuel cell
A solid polymer fuel cell includes an electrolyte membrane having a polymer ion-exchange component, and an air electrode and a fuel electrode between which the electrolyte membrane is sandwiched....
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7022427 |
Membrane for a fuel cell and method for producing the same
The invention relates to an ion-conductive polymer membrane for a fuel cell, whereby the polymer membrane is configured from a polymer-forming hydrocarbon material and to a method for producing the...
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7014931 |
Methanol-tolerant cathode catalyst composite for direct methanol fuel cells
A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane...
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7014942 |
Method for solid oxide fuel cell anode preparation
A method for preparation of an anode for a solid oxide fuel cell in which a plurality of zircon fibers are mixed with a yttria-stabilized zirconia (YSZ) powder, forming a fiber/powder mixture. The...
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7011905 |
Solid polymer electrolyte membrane, solid polymer electrolyte fuel cell using the membrane and method of fabricating the same
A solid polymer electrolyte membrane and a catalytic layer are properly assembled even when the solid polymer electrolyte membrane and an ion exchange resin in the catalytic layer are formed of...
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7008971 |
Composite polymer electrolytes for proton exchange membrane fuel cells
Thin films of inexpensive composite polymer electrolyte membranes containing inorganic cation exchange materials including various clay based fillers are fabricated by solution casting. The...
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7001929 |
Proton conductive membrane having improved thermal stability
The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups. The proton conductive membrane comprises a nitrogen-containing...
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6991867 |
Fuel cell
A fuel cell for production of electrical energy, such as a fuel cell, comprising a fuel chamber ( 1 ), an anode ( 2 a ), a cathode ( 2 b ), an electrolyte ( 3 ) disposed between said anode and said...
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6991865 |
Apparatus and methods for sensor-less optimization of methanol concentration in a direct methanol fuel cell system
Apparatus and methods for regulating methanol concentration in a direct methanol fuel cell system without the need for a methanol concentration sensor. One or more operating characteristics of the...
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6989215 |
Apparatus of high power density fuel cell layer with micro structured components
A fuel cell layer with a fuel plenum, an oxidant, and a plurality of fuel cells, wherein each fuel cell has a porous substrate, a channel, an anode and a cathode formed in opposite channel walls,...
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6986963 |
Metallization of bacterial cellulose for electrical and electronic device manufacture
The employment of metallized bacterial cellulose in the construction of fuel cells and other electronic devices is disclosed. The fuel cell includes an electrolyte membrane comprising a membrane...
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6986962 |
Basic polymer electrolyte fuel cell
A fuel cell has a unit cell whose output is increased. A unit cell of a fuel cell includes a cathode electrode having a gas diffusion layer and an electrode catalyst layer. The electrode catalyst...
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6979510 |
Solid polymer electrolyte membrane of a fuel cell and method for producing the same
In a solid polymer electrolyte membrane with an ion exchangeability employed in a solid polymer electrolyte fuel cell, an anion group is partially combined with the solid polymer membrane.
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6962959 |
Composite electrolyte with crosslinking agents
A covalent crosslinking of ion-conducting materials via sulfonic acid groups can be applied to various low cost electrolyte membrane base materials for improved fuel cell performance metrics...
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6955712 |
Proton-conducting polymer with acid groups in side chains, preparation method thereof, polymer membrane manufactured using the polymer, and fuel cell using the polymer membrane
A proton-conducting polymer, a preparation method thereof, a polymer membrane manufactured from the proton-conducting polymer, and a fuel cell having the polymer membrane are provided. The...
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6953634 |
Method for manufacturing composite membranes
A method for manufacturing composite membranes includes providing a branched polyalkoxy siloxane, providing an organic proton conductor, mixing the branched polyalkoxy siloxane with the organic...
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6949304 |
Fullerene-based electrolyte for fuel cells
Proton conductive fullerene materials are incorporated in minor amounts into various polymeric materials to enhance the low relative humidity proton conductivity properties of the polymeric...
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6946211 |
Polymer electrolyte membrane fuel cells
A method for preparing polybenzimidazole or polybenzimidazole blend membranes and fabricating gas diffusion electrodes and membrane-electrode assemblies is provided for a high temperature polymer...
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6939646 |
Polymer electrolyte and process for producing the same
A polymer electrolyte having, in a main chain, a structural unit represented by the following formula (1):
—[Ar 1 —(SO 2 —N − (X...
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6933068 |
Polymer electrolyte membrane and solid polymer electrolyte fuel cell using same
A composite polymer electrolyte membrane is formed from a first polymer electrolyte comprising a sulfonated polyarytene polymer and a second polymer electrolyte comprising another hydrocarbon...
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6926984 |
Polymer electrolyte membrane, method for producing same, and membrane electrode assembly and polymer electrolyte fuel cell comprising same
A polymer electrolyte membrane obtained by subjecting a sulfonated polyarylene membrane having an initial water content of 80-300 weight % to a hot-water treatment. A composite polymer electrolyte...
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6921604 |
DEVICE AND METHOD FOR EVALUATING PERFORMANCE OF FUEL CELLS, DEVICE AND METHOD FOR EVALUATING SPECIFIC SURFACE AREA OF FUEL-CELL ELECTRODE CATALYSTS, FUEL-CELL ELECTRODE CATALYST, AND METHOD OF MANUFACTURING THE SAME
A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an...
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6913851 |
Polyether polymer compounds as well as ion conductible polymer compositions and electrochemical devices using the same
The present invention is aimed to provide polyether polymers capable of improving an ion conductivity around room temperature as well as ion conductible polymer compositions and electrochemical...
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6914111 |
Ion exchange polymer dispersion and process for its production
An ion exchange polymer dispersion having an ion exchange polymer having sulfonic acid groups and a fibrilliform fluorocarbon polymer dispersed in a dispersion medium.
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6902801 |
Composite ion exchange material
A composite material, for example a composite membrane for a polymer electrolyte membrane fuel cell includes a first conductive polymer and a support material for the polymer, wherein the support...
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6902839 |
Polymer electrolyte membrane for fuel cell and method for producing the same
Disclosed is a polymer electrolyte membrane for a fuel cell, which restrains a crossover phenomenon of fuel and a decomposition of a polymer membrane over platinum, and shows outstanding power...
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6896983 |
Membrane for fuel cells
The invention relates to a membrane, in particular, a membrane for use in a methanol fuel cell. The inventive membrane comprises complexing agents for cations and, therefore, functions like an...
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6893762 |
Metal-supported tubular micro-fuel cell
This invention relates to a method of manufacturing a metal-supported tubular micro-solid oxide fuel cell, and a fuel cell made from such method. The method comprises the steps of coating a wooden...
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6893763 |
Composite polymer electrolyte membrane for polymer electrolyte membrane fuel cells
A polymer electrolyte membrane for a polymer electrolyte membrane fuel cell, which polymer electrolyte membrane has a water-based resin preferably including at least one of vinyl acetate, dextrin...
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6890677 |
Fuel cell and membrane
Fuel cells and a novel membrane for use in fuel cells and manufacturing processes.
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6890490 |
Hydrogen absorbing tank apparatus
A gas compressor and a bypass that bypasses the gas compressor are provided between a hydrogen absorbing tank and a hydrogen gas consumer device such as, for example, a fuel cell. When the hydrogen...
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6887612 |
Fuel cell
The invention relates to a fuel cell having a moderate operating temperature which comprises a cathode, an anode and an electrolyte, where at least the cathode comprises a material having the...
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6880238 |
Electrochemical uses of amorphous fluoropolymers
An electrochemical application that utilizes amorphous fluoropolymers providing a membrane electrode assembly that is durable, uniform and possesses a good structural integrity, produced by a...
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6878475 |
Membrane for fuel cell, and fuel cell incorporating that membrane
A proton exchange membrane for a fuel cell is prepared from a polyimidazole polymer having the formula:
wherein R 1 -R 3 are independently H, a halogen, an alkyl or a substituted alkyl. X 1 ...
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6875537 |
Membrane electrode assembly for polymer electrolyte fuel cell
A membrane electrode assembly for polymer electrolyte fuel cells comprises a cathode electrode, an anode electrode, and a polymer electrolyte membrane placed between these electrodes, and a...
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6875532 |
Method for manufacturing a single high-temperature fuel cell and its components
This invention relates to prospective electric energy sources to be employed in both mobile and stationery high-power electric stations. A method is disclosed for manufacturing a High Temperature...
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6872331 |
Oxide ion conductor, manufacturing method therefor, and fuel cell using the same
An oxide ion conductor is manufactured having a relatively high mechanical strength while the ionic conduction thereof is maintained at a satisfactory level. The oxide ion conductor is represented...
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6869712 |
Ion exchange system structure with a microtextured surface, method of manufacture, and method of use thereof
A method for roughening a surface of an ion exchange system structure using laser interaction with a surface. The laser surface roughening process allows the use of a wide range of substrates such...
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6869715 |
Ion conductive membrane for electrochemical application
An ion conductive membrane for electrochemical applications is provided for forming the membrane on the basis of a polyimide or copolyimide polymer, which contains in its structure heterocyclic...
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6869714 |
Electrode-membrane assembly and process for the preparation thereof
An electrode-membrane assembly comprising a pair of electrodes at least one of which is porous, and a thermoplastic resin membrane having a functional group capable of being modified to a free ion...
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