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6007934 |
Co-tolerant anode catalyst for PEM fuel cells and a process for its preparation
A platinum supported catalyst is disclosed for the anode in a PEM fuel cell with high resistance to poisoning by carbon monoxide. The catalyst contains the noble metals platinum and ruthenium on a...
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6004696 |
AG-perovskite cermets for thin film solid oxide fuel cell air-electrode applications
An air electrode for a solid oxide fuel cell having high conductivity and low interfacial resistance is disclosed. Said air electrode is composed of an Ag-perovskite cermet.
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6004688 |
Solid oxide fuel cell and doped perovskite lanthanum gallate electrolyte therefor
A perovskite lanthanum gallate electrolyte doped with strontium and magnesium and a solid oxide fuel cell incorporating a doped lanthanum gallate electrolyte with a cathode on one side, an anode on...
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6001500 |
Cylindrical proton exchange membrane fuel cells and methods of making same
The present invention provides a method of manufacturing a cylindrical fuel cell comprising: providing an anode comprising a substantially solid cylindrical porous conductive matrix, said anode...
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6001761 |
Ceramics sheet and production method for same
Disclosed are a ceramics sheet which has an area of 400 cm 2 or more, thickness of 0.4 mm or less, maximum waviness height of 100 μm or less, and warp of 0.1% or less and in which frequency of...
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5998055 |
Gas-passage plates of a fuel cell
Gas passages of a gas-passage plate disposed between fuel cells are improved, in order to enhance gas utilization efficiency and output performance. The supply-gas passages formed on the...
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5992008 |
Direct methanol feed fuel cell with reduced catalyst loading
Improvements to direct feed methanol fuel cells include new protocols for component formation. Catalyst-water repellent material is applied in formation of electrodes and sintered before...
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5994254 |
Fluorite ceramic material
A ceramic material, having the general formula: A x B y O 2 -δ wherein x≤1 and y≤1 and -1δ<1, and A is one or more metals selected from the group of Ti, Zr, Hf, Ce and Th or...
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5993989 |
Interfacial material for solid oxide fuel cell
Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and...
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5993985 |
Fuel cell tubes and method of making same
A method of manufacturing porous ceramic tubes for fuel cells with improved properties and higher manufacturing yield is disclosed. The method involves extruding a closed end fuel cell tube, such...
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5985477 |
Polymer electrolyte for fuel cell
Provided is a polymer electrolyte which is cheap and easily synthesized, and has a high water resistance and high output performance. The polymer electrolyte comprising a sulfonated polymer having...
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5985476 |
Stable high conductivity functionally gradient compositionally layered solid state electrolytes and membranes
Stable high conductivity functionally gradient compositionally layered solid bodies suitable for use as electrolytes and membranes and providing improved oxygen-ion conductivity for electrolytes...
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5981097 |
Multiple layer membranes for fuel cells employing direct feed fuels
A cation exchange membrane having a laminated structure of at least three layers of cation exchange polymer. In a membrane in accordance with the invention, the cation exchange polymer in the...
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5976721 |
Chemical cogeneration process
A chemical cogeneration process for producing chemical products and cogenerating electrical energy is presented. The process comprises the steps of providing a monolithic mass and energy transfer...
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5976725 |
Fuel cell system, fuel feed system for fuel cell and portable electric appliance
A fuel cell system has a fuel cell of solid polymer type, a rectangular parallelepiped sealing container for accommodating hydrogen occlusion alloy for occluding hydrogen to be supplied to said...
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5968673 |
Solid electrolyte thin film and method for producing the same
The present invention relates to a solid electrolyte thin film and a manufacturing method for the same. The solid electrolyte thin film of the present invention comprises yttrium stabilized...
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5961796 |
Bipolar membranes with fluid distribution passages
The present invention provides a bipolar membrane and methods for making and using the membrane. The bipolar membrane comprises a cation-selective region, an anion-selective region, an interfacial...
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5962155 |
Fuel cell system
When a polymeric electrolyte type fuel cell operating at about 60° C. is used, heating with exhaust gas becomes difficult. Therefore, a polymeric electrolyte type fuel cell (PEM) is adopted as a...
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5958997 |
Composition for and a method for producing a polymeric ion conductive membrane
The present invention provides a composition for a polymeric ion conductive membrane. Said composition comprises an alkaline salt, an acrylate and/or methacrylate of poly(ethylene glycol) alkyl...
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5958616 |
Membrane and electrode structure for methanol fuel cell
The invention provides devices and techniques for reducing or eliminating fuel crossover from the anode to the cathode in fuel cells using organic fuels. The invention particularly provides proton...
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5958304 |
Doped lanthanum chromite material for bipolar interconnects for solid oxide fuel cells
An improved ceramic interconnect component for a solid oxide fuel cell having good electrical conductivity and thermodynamic stability in the presence of fuel and a coefficient of thermal expansion...
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5948557 |
Very thin microporous material
Very thin microporous material comprises a matrix of substantially linear polyolefin, finely divided substantially water-insoluble filler particles distributed throughout the matrix, and a network...
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5945231 |
Direct liquid-feed fuel cell with membrane electrolyte and manufacturing thereof
An improved direct liquid-feed fuel cell having a solid membrane electrolyte for electrochemical reactions of an organic fuel. Improvements in interfacing of the catalyst layer and the membrane and...
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5945233 |
Process for producing polybenzimidazole pastes and gels for use in fuel cells
A method for producing polybenzimidazole (PBI) paste or gel useful in a fuel cell, mixing PBI polymer with a suitable amount of an acid, which permits the polymer to dissolve and form a matrix...
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5942345 |
High performance electrolytes for MCFC
A carbonate electrolyte of the Li/Na or CaBaLiNa system. The Li/Na carbonate has a composition displaced from the eutectic composition to diminish segregation effects in a molten carbonate fuel...
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5935727 |
Solid oxide fuel cells
A fuel cell stack made from two different ceramic materials which are used to form four distinct layers of each individual fuel cell is provided. The fuel cell stack uses a ceramic ionic conductor...
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5932146 |
Air electrode composition for solid oxide fuel cell
An air electrode composition for a solid oxide fuel cell is disclosed. The air electrode material is based on lanthanum manganite having a perovskite-like crystal structure ABO 3 . The A-site of...
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5922486 |
Cosintering of multilayer stacks of solid oxide fuel cells
A multilayer fuel cell stack comprised of a plurality of fuel cell units each having an electrolyte layer interposed between an anode layer and a cathode layer, a pair of buffer layers, and an...
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5919583 |
Membranes containing inorganic fillers and membrane and electrode assemblies and electrochemical cells employing same
Cation exchange membranes, made from polymer having cation exchange groups and containing inorganic filler, exhibit reduced fuel crossover for fuel cells employing direct feed organic fuels such as...
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5911860 |
Solid electrolyte membrane with mechanically-enhancing constituents
A solid electrolyte ion transport membrane comprising a matrix material which conducts at least one type of ion such as oxygen ions, and at least one constituent which is physically distinct from...
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5908713 |
Sintered electrode for solid oxide fuel cells
A solid oxide fuel cell fuel electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, which is then dried. An...
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5906716 |
Metallized cation exchange membrane
Metallized cation-exchange membrane The present invention relates to a membrane/electrode composite comprising a membrane comprising a polymeric cation exchanger containing carboxylic acid,...
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5905000 |
Nanostructured ion conducting solid electrolytes
Ion conducting solid electrolytes are constructed from nanoscale precursor material. Nanocrystalline powders are pressed into disc structures and sintered to the appropriate degree of...
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5882810 |
Active layer for membrane electrode assembly
Described is a membrane electrode assembly having an ion exchange membrane, and at least two active layers positioned on the same side of the membrane; wherein the active layers containing...
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5863672 |
Polymer electrolyte membrane fuel cell
The invention relates to a PEM fuel cell comprising at least one strip meane (8) which itself comprises at least 2, and a maximum of 10,000-surfaced individual cells each comprising an electrode...
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5863395 |
Electrochemical cell having a self-regulating gas diffusion layer
The invention relates to an electrochemical cell having an electrode with a catalyst layer and a gas diffusion layer. The cell also includes a mass flow field for directing fluid to and away from...
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5861221 |
Battery shaped as a membrane strip containing several cells
An electrochemical cell has at least one membrane strip that forms a central area and at least two, maximum 10,000 flat individual cells. The individual cells consist each of an electrode layer...
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5849428 |
Membrane for hydrogen and methanol fuel cell
The migration of water and methanol across the hydrophilic membrane of hygen and methanol fuel cells from the anode to the cathode compartment decreases the electric energy output of such fuel...
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5834137 |
Thin film method of conducting lithium-ions
The present invention relates to the composition of a solid lithium-ion electrolyte based on the Li 2 O--CeO 2 --SiO 2 system having good transparent characteristics and high ion conductivity...
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5807642 |
Solid oxide fuel cell stacks with barium and strontium ceramic bodies
A ceramic body based on barium and strontium titanates has a composition defined essentially by the formula Ba 1 -x Sr x TiO 3 , where x ranges from 0 to 1. The ceramic body is chemically and...
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5807412 |
Electrochemical cell having a polymer electrolyte
An electrochemical cell is provided with first (10) and second (11) electrodes and a solid polymer electrolyte (15) disposed therebetween. The solid polymer electrolyte is preferably fabricated by...
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5800938 |
Sandwich-type solid polymer electrolyte fuel cell
Disclosed is a sandwich-type solid polymer electrolyte fuel cell comprising in sequence, a cathode current collector; a cathode electrically connected to the cathode current collector, said cathode...
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5795668 |
Fuel cell incorporating a reinforced membrane
A fuel cell and a battery with a reinforced polymeric ion exchange membrane are disclosed. The membrane comprises (a) a porous support layer, preferably of fluorine-containing polymer, and (b) an...
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5795496 |
Polymer material for electrolytic membranes in fuel cells
A polymer, PEEK or SPES is processed to use it as a proton conducting membrane for a fuel cell. Asymmetric properties are formed.
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5789106 |
Ion-conductive polymers
Ion-conductive polymers with high ion conductivity and containing covalently bound ion complexes of one of formulas (IA-IC), wherein M + is H + , Li + , Na + , or K + ; m is an integer in the...
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5786105 |
Solid oxide fuel cell
A solid oxide fuel cell which includes a substrate having therein a plurality of gas supply passages and a plurality of gas return passages. The gas supply passages have inlet ports on a surface of...
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5785839 |
Composite structure including a solid electroylte and at least one volume electrode
A composite structure comprising: (i) a solid electrolyte which is an O 2 - anion conductor and essentially impermeable to gases; (ii) a cathode; and (iii) an anode, wherein the cathode...
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5783324 |
Fuel cell including a single sheet of a polymer electrolyte membrane (PEM), the PEM being divided into regions of varying electrical and ionic conductivity
A fuel cell is provided including a single sheet film or ribbon of any leh of a Polymer Electrolyte Membrane ("PEM") wherein the PEM is divided into regions or zones of varying electrical...
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5776624 |
Brazed bipolar plates for PEM fuel cells
A liquid-cooled, bipolar plate separating adjacent cells of a PEM fuel cell comprising corrosion-resistant metal sheets brazed together so as to provide a passage between the sheets through which a...
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5770326 |
Monolithic mass and energy transfer cell
A monolithic mass and energy transfer cell is provided. The cell comprises a monolithic ionically conductive core. The core has an outer surface including a first entrance surface and a first exit...
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