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5393619 |
Cell separator for use in bipolar-stack energy storage devices
An improved multi-cell electrochemical energy storage device, such as a battery, fuel cell, or double layer capacitor using a cell separator which allows cells to be stacked and interconnected with...
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5378562 |
Method of making air cathode material having catalytically active manganese compounds of valance state +2
A method of making an air cathode material for a metal-air cell is provided. In the air cathode material of the present invention, manganese compounds of valence state +2 act as catalysts for the...
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5364712 |
Dual porosity gas evolving electrode
A dual porosity electrode for use in thermoelectrochemical systems where simultaneous transport of gas and liquid into and/or out of the electrode is required. The electrode includes catalytic...
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5356731 |
Molten cabonate fuel cell with sintered LiCoO.sub.2 electrode
An electrode suitable for use in a fuel cell, and a fuel cell containing such an electrode, is provided by a unitary sintered porous body containing LiCoO 2 . The electrode is produced from a tape...
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5340665 |
Creep resistant, metal-coated LiFeO.sub.2 anodes for molten carbonated fuel cells
A porous, creep-resistant, metal-coated, LiFeO 2 ceramic electrode for fuel cells is disclosed. The electrode is particularly useful for molten carbonate fuel cells (MCFC) although it may have...
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5338621 |
Apparatus for converting chemical energy of fuel into electrical energy with a plurality of high-temperature fuel cells
An apparatus for converting chemical energy of a fuel into electrical energy includes a plurality of high-temperature fuel cells, which extend parallel to each other, with each fuel cell having an...
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5318861 |
Electrochemical metal-air cell and electrically and mechanically rechargeable anodes for use therein
An electrochemical metal-air cell for multiple discharge and recharge cycles, includes a housing for accommodating a replaceable metal electrode having a generally planar electrically conductive...
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5316871 |
Method of making membrane-electrode assemblies for electrochemical cells and assemblies made thereby
A method of making a combination, unitary, membrane and electrode assembly having a solid polymer electrolyte membrane, and first and second electrodes at least partially embedded in opposed...
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5314760 |
Electrochemical cell electrode
A supported catalyst useful in the preparation of an electrode for an electrochemical cell which comprises the residue remaining after heating at about 500° to about 800° C. a transition metal...
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5308711 |
Metal-air cathode and cell having catalytically active manganese compounds of valence state +2
An air cathode for a metal-air cell and methods for making it are provided. In the air cathode of the present invention, manganese compounds of valence state +2 act as catalysts for the reduction...
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5306579 |
Bifunctional metal-air electrode
A bifunctional air-electrode for use in electrochemical energy cells discharges a satisfactory current on the first discharge cycle and operates for a relatively large number of charge-discharge...
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5300206 |
Antipercolation gas-diffusion electrode and method of making same
A gas diffusion electrode is provided with antipercolation coating by bonding a free-standing film, e.g. of polysulfone or polypropylene, to a catalyzed carbon cloth utilizing a filled...
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5298343 |
Electrocatalysts for H.sub.2 /O.sub.2 fuel cells cathode
The invention relates to polycomponent electrocatalysts suitable for use at the cathode of electrochemical and fuel cells. More particularly, the invention relates to a polycomponent electrode...
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5294317 |
Oxygen generating electrode
An oxygen generating electrode has on a conductive substrate a first layer of metallic platinum and tantalum oxide containing 80-99 mol% of Ta and 20-1 mol% of Pt, a second layer of iridium oxide...
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5294580 |
Method for making alloyed catalysts
Adjustment of the noble metal catalytic activity in the production of noble metal alloyed catalyst preparation using alloying metals capable of multiple valence states improves the alloying metal...
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5277996 |
Fuel cell electrode and method for producing same
An improved fuel cell electrode and method for construction is disclosed wherein the electrodes are formed from adjacent layers of a porous substrate material such as carbon, and C 60 carbon...
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5271917 |
Activation of carbon fiber surfaces by means of catalytic oxidation
Carbon fibers having substantially increased active surface area and total surface area are used to enhance carbon fiber bonding to matrix materials in carbon fiber products. The enhanced active...
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5258241 |
Rebalance cell for a Cr/Fe redox storage system
The invention provides a rebalance cell for a Cr/Fe redox storage system. The rebalance cell has a catalyst for the reduction of Fe 3 + ions by means of hydrogen. The catalyst separates a gas...
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5246791 |
Fuel cell containing a reforming catalyst
A high temperature fuel cell containing a reforming catalyst with improved resistance to deactivation by the electrolyte of a high temperature fuel cell comprising ruthenium on a support.
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5225391 |
Electrocatalyst for anode
Disclosed is an electrocatalyst which comprises an inorganic support and four-element alloy essentially consisting of 10 to 39 atomic percent of platinum, 30 to 5 atomic percent of nickel, 30 to 5...
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5208207 |
Electrocatalyst
Disclosed is an electrocatalyst which comprises an inorganic support and a ternary alloy essentially consisting of platinum-palladium-ruthenium supported on the support. The electrocatalyst...
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5189005 |
Electrocatalyst and process of preparing same
Disclosed herein are a platinum alloy catalyst comprising an electroconductive support and platinum-nickel-cobalt alloy particles having an ordered structure supported on the electroconductive...
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5183713 |
Carbon monoxide tolerant platinum-tantalum alloyed catalyst
Carbon monoxide poisoning of anode catalysts in phosphoric acid fuel cells reduces the cell performance. The carbon monoxide absorbs onto the catalyst, blocking hydrogen oxidation sites. A carbon...
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5178971 |
Supported platinum quaternary alloy electrocatalyst
A platinum alloy electrocatalyst comprising an electrically conductive carrier and a platinum-cobalt-nickel-copper quaternary solid solution alloy dispersed in and deposited on the carrier,...
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5162166 |
Devices providing electrical energy from fuel/oxygen mixtures
The present invention provides improved devices for the production of electrical energy from mixtures of oxygen (i.e., pure oxygen, air, or a similar source of free oxygen) and fuel (i.e., hydrogen...
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5151334 |
Fuel cell utilizing solidous electrolyte
A cell unit structure for stacking to form a fuel cell is described, composed of a porous substrate, a hydrogen electrode film formed of fine particles of nickel powder stacked on the porous...
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5137754 |
Process for preparing fluorinated material employed in a fuel cell
A process for preparing hydrophobic material is disclosed which comprises applying a hydrocarbon polymer compound solution to the surface of material to be treated, vaporizing the solvent of the...
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5133842 |
Electrochemical cell having electrode comprising gold containing electrocatalyst
The disclosed electrocatalyst material is useful in electrodes, especially in cathodes for the reduction of oxygen or peroxide to water or hydroxide. The electrocatalyst typically comprises 0.1 to...
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5126216 |
Ternary alloy electrocatalysts
The present invention is concerned with a ternary alloy electrocatalyst for oxygen reduction in fuel cell electrodes or other catalytic structure. The electrocatalyst of the present invention is...
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5122425 |
Electrolyte/electrode assembly for a solid electrolyte fuel cell
An electrolyte/electrode assembly for a solid electrolyte fuel cell includes a pair of flat electrodes spaced from one another and a solid electrolyte element sandwiched between the electrodes. A...
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5102750 |
Efficiency enhancement for solid-electrolyte fuel cell
In a solid-electrolyte fuel cell of the type described in U.S. Pat. No. 4,863,813 a permeable catalytic electrode in contact with the solid electrolyte is ordinarily exposed to a mixture comprising...
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5094928 |
Modular fuel cell assembly
Two or more individual fuel cells are connected together to form a modular assembly whose output voltage is two or more times that of a single cell. Corrugated current collectors interconnect...
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5093214 |
Thin carbon plate suitable for use as fuel cell separator
A thin carbon plate obtained by forming a polycarbodiimide resin or a mixture of a polycarbodiimide resin and polycarbodiimide fibers into a thin plate and carbonizing the thin plate. This thin...
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5084144 |
High utilization supported catalytic metal-containing gas-diffusion electrode, process for making it, and cells utilizing it
Gas-diffusion electrodes (GDE's) suitable for use with a solid polymer electrolyte (s.p.e.), particularly in s.p.e. fuel cells, which GDE's provide unusually highly efficient use of noble or...
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5079107 |
Cathode alloy electrocatalysts
Ternary alloy electrocatalysts comprising platinum and at least two less noble elements are described. The ternary alloy electrocatalysts when employed in the cathode of a fuel cell utilizing a...
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5071717 |
Coated cathode substrate
Gaps occurring between a cathode substrate and a gas housing in a fuel cell interfere with electron transfer in the cell causing high cell internal resistance. To reduce the high resistance gaps...
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5068161 |
Catalyst material
An electrocatalytic material comprises an alloy of platinum with another element, supported on a conductive carbon support, the platinum loading being at 20 to 60 wt % and the ECA of the alloy...
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5064734 |
Current-transmitting components for stacked high-temperature fuel cells and method of producing them
Current-transmitting components for conducting current between adjacent, planar, stacked high-temperature fuel cells containing solid electrolyte (1) comprising a carrier (7; 10) which determines...
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5041195 |
Gold electrocatalyst, methods for preparing it, electrodes prepared therefrom and methods of using them
The disclosed electrocatalyst material is useful in electrodes, especially in cathodes for the reduction of oxygen or peroxide to water or hydroxide. The electrocatalyst typically comprises 0.1 to...
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5037525 |
Composite electrodes for use in solid electrolyte devices
A composite electrode material for use in solid electrolyte devices, which comprises a mixture of a noble metal and a semiconducting metal oxide with either electronic (n-type) or hole (p-type)...
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5035962 |
Layered method of electrode for solid oxide electrochemical cells
A process for fabricating a fuel electrode comprising: slurry dipping to form layers which are structurally graded from all or mostly all stabilized zirconia at a first layer, to an outer most...
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5024905 |
Platinum alloy electrocatalyst
Disclosed are a platinum alloy electrocatalyst having high activity and a long life comprising an electrically conductive carrier and dispersed in, and deposited on it, a...
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5021304 |
Modified cermet fuel electrodes for solid oxide electrochemical cells
An exterior porous electrode (10), bonded to a solid oxygen ion conducting electrolyte (13) which is in contact with an interior electrode (14), contains coarse metal particles (12) of nickel...
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5013618 |
Ternary alloy fuel cell catalysts and phosphoric acid fuel cell containing the catalysts
A noble metal ternary alloy catalyst, which has increased mass activity and stability. This catalyst comprises a ternary alloy of platinum, iridium and a metal selected from the group consisting of...
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4992342 |
Stabilized carbonate fuel cell cathode
Migration and/or dissolution of Ni from the cathode of a molten carbonate fuel cell is retarded by the incorporation of a constituent adapted to effect such retardation.
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4985316 |
Corrosion resistant fuel cell substrates
A porous substrate of a fuel cell electrode assembly is formed by producing a fibrous carbon precursor web by means of a conventional wet paper-making process. The precursor web is then dried and...
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4985386 |
Carburized platinum catalysts and process for preparing the same employing acid amine salts
Disclosed herein are a platinum catalyst and a process for preparing the same. The catalyst comprises carbon supports and the carbides of (i) platinum and of (ii) one or more metals selected from...
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4966675 |
Polarizable electrode
The polarizable electrode in an electrolyte comprises an electrically conductive conductor, advantageously metal or carbon, which is surrounded by an inner layer made of an electrically conductive...
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4965145 |
Electrical storage cell resistant to freezing
The conventional sintered, thin hydrogen negative electrode of a nickel-hydrogen storage cell or the like is replaced by a thicker porous electrode having a greater volume to receive water produced...
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4956131 |
Fuel cell electrode substrate incorporating separator as an intercooler and process for preparation thereof
Disclosed herein is an electrode substrate for fuel cells comprising two porous, carbonaceous layers, each having a number of elongated holes for feeding reactant gases into a fuel cell which are...
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