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691results about "Alkaline electrolytes" patented technology
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Layered barrier structure having one or more definable layers and method
InactiveUS20050147877A1Reduce transmissionLow rateFuel and primary cellsElectrode manufacturing processesDielectricLithium compound
A system provides an environmental barrier also useful for providing a circuit, for example, one having a thin-film battery such as one that includes lithium or lithium compounds connected to an electronic circuit. An environmental barrier is deposited as alternating layers, at least one of the layers providing a smoothing, planarizing, and / or leveling physical-configuration function, and at least one other layer providing a diffusion-barrier function. The layer providing the physical-configuration function may include a photoresist, a photodefinable, an energy-definable, and / or a maskable layer. The physical-configuration layer may also be a dielectric. A layered structure, including a plurality of pairs of layers, each pair including a physical configuration layer and a barrier layer with low gas-transmission rates, may be used in reducing gas transmission rate to beyond currently detectable levels.
Owner:CYMBET CORP
Metal-air electrochemical cell with high energy efficiency mode
ActiveUS20110250512A1Effective and efficient mannerFuel and primary cellsFuel and secondary cellsMetal–air electrochemical cellHigh energy
The present invention relates to a metal-air electrochemical cell with a high energy efficiency mode.
Owner:FORM ENERGY INC
Zinc Ion-Exchanging Energy Storage Device
ActiveUS20160301096A1Quick releaseRapid depositionHybrid capacitor electrolytesAlkaline accumulatorsChemical treatmentZinc metal
A zinc ion-exchanging battery device comprising: (A) a cathode comprising two cathode active materials (a zinc ion intercalation compound and a surface-mediating material); (B) an anode containing zinc metal or zinc alloy; (C) a porous separator disposed between the cathode and the anode; and (D) an electrolyte containing zinc ions that are exchanged between the cathode and the anode during battery charge / discharge. The zinc ion intercalation compound is selected from chemically treated carbon or graphite material having an expanded inter-graphene spacing d002 of at least 0.5 nm, or an oxide, carbide, dichalcogenide, trichalcogenide, sulfide, selenide, or telluride of niobium, zirconium, molybdenum, hafnium, tantalum, tungsten, titanium, vanadium, chromium, cobalt, manganese, iron, nickel, or a combination thereof. The surface-mediating material contains exfoliated graphite or multiple single-layer sheets or multi-layer platelets of a graphene material.
Owner:GLOBAL GRAPHENE GRP INC
Battery cathode
InactiveUS6858349B1Improve conductivityOvercome lack of conductivityPositive electrodesPrimary cell electrodesFiberCarbon fibers
A primary alkaline battery includes a cathode having a cathode active material and carbon fibers, an anode, a separator and an alkaline electrolyte. The carbon fibers have diameters less than about 250 nanometers.
Owner:DURACELL U S OPERATIONS
Electro-catalysts for the oxidation of ammonia in alkaline media
InactiveUS20050211569A1From normal temperature solutionsLiquid separation by electricityChemistryIridium
An electro-catalyst for the oxidation of ammonia in alkaline media; the electrocatalyst being a noble metal co-deposited on a support with one or more other metals that are active to ammonia oxidation. In some embodiments, the support is platinum, gold, tantalum, or iridium. In some embodiments, the support has a layer of Raney metal deposited thereon prior to the deposition of the catalyst. Also provided are electrodes having the electro-catalyst deposited thereon, ammonia electrolytic cells, ammonia fuel cells, ammonia sensors, and a method for removing ammonia contaminants from a contaminated effluent.
Owner:OHIO UNIV
Alkaline battery including nickel oxyhydroxide cathode and zinc anode
InactiveUS20070248879A1Improve discharge performanceHigh capacity retentionActive material electrodesJackets/cases materialsConductive coatingZinc alloys
A primary alkaline battery includes a cathode including a nickel oxyhydroxide and an anode including zinc or zinc alloy particles. Performance of the nickel oxyhydroxide alkaline cell is improved by adding zinc fines to the anode and by including an oxidation resistant graphite in the cathode as well as in a conductive coating applied to the inside surface of the cell housing.
Owner:THE GILLETTE CO
Metal-air semi-fuel cell with an aqueous acid based cathode
InactiveUS20070259234A1Long time operationCell energy increasedFuel and primary cellsFuel and secondary cellsFuel cellsOxygen
A metal-air semi-fuel cell is provided, preferably based on lithium anode and a fuel cell type air / oxygen electrode immersed in an aqueous neutral, alkali or acid solution. The lithium anode is comprised of the active metal and one or more separators protecting the anode from reacting with an aqueous solution. The outermost layer on the lithium electrode is a solid-state lithium-ion conducting glass-ceramic which is impervious to and stable towards aqueous solutions. The cathode is comprised of an air or oxygen fuel cell type electrode in contact with the aqueous solution. The lithium anode of this invention also can be replaced by other electroactive metals which react with water and acids, bases and neutral solutions, such as metals from Groups 1 and 2 of the Periodic Table of Elements in addition to Zn, Mg, and Al.
Owner:CHUA DAVID +2
Separators for use in alkaline cells having high capacity
InactiveUS20060257728A1Cell seperators/membranes/diaphragms/spacersNon-aqueous electrolyte accumulator electrodesMetallic sulfideAdhesive materials
The present invention relates to an electrochemical cell comprising an anode, a cathode, and a separator disposed between the anode and cathode. More particularly, the present invention relates to an electrochemical cell comprising, among other things, a separator impregnated with, and / or coated with a layer of, a clay and / or a metal sulfide additive. The present invention additionally or alternatively relates to an electrochemical cell which comprises, among other things, a self-supporting or free-standing thin film separator. The present invention additionally or alternatively relates to an electrochemical cell which comprises, among other things, a separator, wherein at least a portion thereof is covered by an adhesive material that is bonded to the container or a sealing assembly of the cell.
Owner:ROVCAL +1
Biocompatible wire battery
ActiveUS20130034760A1Reliable and stable powerEasy to useFinal product manufactureSmall-sized cells cases/jacketsActive componentElectrochemistry
A rechargeable electrochemical battery in the form of a single or multi-stranded wire assembly may be utilized as a power source for any number of implantable or non-implantable medical devices. As the wire form battery may be scaled to micro size, it may be utilized to power medical devices that were traditionally non-active devices, but which may be enhanced with active components. The wire form battery may be cut to size for a particular application which provides the same open circuit voltage regardless of how the wire is ultimately configured and the length of the wire utilized. Although the battery is in wire form, various arrangements of the components within the battery are also possible.
Owner:JOHNSON & JOHNSON VISION CARE INC
Lithium air secondary battery
ActiveUS20150024292A1Solve the blockageSolution to short lifeSolid electrolytesFuel and secondary cellsLithiumEngineering
The present invention provides a lithium-air secondary battery that is capable of effectively preventing deterioration of an alkaline electrolytic solution, air electrode, and negative electrode and has a long life and high long-term reliability. The lithium-air secondary battery comprises an air electrode 12 functioning as a positive electrode, an anion exchanger 14 provided in close contact with one side of the air electrode and composed of a hydroxide-ion conductive inorganic solid electrolyte, a separator 16 provided away from the anion exchanger and composed of a lithium-ion conductive inorganic solid electrolyte, a negative electrode 18 provided so as to be capable of supplying and receiving lithium ions to and from the separator and comprising lithium, and an alkaline electrolytic solution 20 filled between the anion exchanger and the separator.
Owner:NGK INSULATORS LTD
Layered barrier structure having one or more definable layers and method
InactiveUS7494742B2Reduce transmissionReduce reduction reactionFuel and primary cellsElectrode manufacturing processesDielectricDiffusion barrier
Owner:CYMBET CORP
Metal-Air Battery or Fuel Cell
InactiveUS20080096061A1Improve conductivityStabilises itFuel and primary cellsFuel and secondary cellsFuel cellsWater vapor
A metal-air battery or fuel cell comprising a metal or metal hydride anode, an aqueous liquid electrolyte containing an ion conducting material, and an air electrode which allows ingress and egress of oxygen and which contains one or more catalysts capable of evolution and / or reduction of oxygen, wherein the air electrode has both hydrophobic and hydrophilic pores, the hydrophilic pores are at least partially filled with aqueous liquid electrolyte and the air electrode and / or the electrolyte comprises hygroscopic material and OH− ions, whereby water vapour exchange with the environment is limited. The hygroscopic material is used to control the humidity of the system.
Owner:REVOLT TECH LTD
Zinc secondary battery
ActiveUS20140315099A1Improve reliabilityPreventing a short circuitSilver accumulatorsSolid electrolytesElectrolyteIon
Provide is a zinc secondary battery capable of preventing a short circuit between the positive and negative electrodes caused by zinc dendrites. The zinc secondary battery of the present invention comprises a positive electrode; a negative electrode containing zinc; an electrolytic solution in which the positive electrode and the negative electrode are immersed or with which the positive electrode and the negative electrode are in contact, wherein the electrolytic solution is an aqueous solution containing an alkali metal hydroxide; and a separator being placed between the positive electrode and the negative electrode and separating the positive electrode and the negative electrode from each other, wherein the separator comprises an inorganic solid electrolyte body having hydroxide ion conductivity.
Owner:NGK INSULATORS LTD
Flexible thin printed battery and device and method of manufacturing same
ActiveUS7348096B2Eliminate needFinal product manufactureElectrode carriers/collectorsElectrical batteryEngineering
A flat, flexible electrochemical cell is provided. The within invention describes various aspects of the flat, flexible electrochemical cell. A printed anode is provided that obviates the need for a discrete anode current collector, thereby reducing the size of the battery. An advantageous electrolyte is provided that enables the use of a metallic cathode current collector, thereby improving the performance of the battery. Printable gelled electrolytes and separators are provided, enabling the construction of both co-facial and co-planar batteries. Cell contacts are provided that reduce the potential for electrolyte creepage in the flat, flexible electrochemical cells of the within invention.
Owner:ENERGIZER BRANDS
Alkaline battery including nickel oxyhydroxide cathode and zinc anode
ActiveUS7273680B2Improve discharge performanceHigh capacity retentionActive material electrodesJackets/cases materialsZinc alloysNickel
Owner:DURACELL U S OPERATIONS
Method of making printed battery structures
Owner:HEWLETT PACKARD DEV CO LP
Lithium Battery Using an Aqueous Electrolyte
InactiveUS20090087742A1Controlling the riskInherent riskAlkaline accumulatorsSolid electrolyte cellsAqueous electrolyteLithium-ion battery
The invention relates to a lithium battery including a cell comprising:a positive electrode,a negative electrode, andan electrolyte consisting of an aqueous solution of a lithium salt,characterized in that the electrolyte has a pH of at least 14, the positive electrode has a lithium intercalation potential greater than 3.4 V, and the negative electrode has a lithium intercalation potential less than 2.2 V.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Cylindrical structure fuel cell
A galvanic cell structure is provided. The galvanic cell structure includes an outer cylinder featuring air inlets, a cathode, an anode, a membrane separating the cathode from the anode, and an inner cylinder featuring fluid inlets that may provide a volume for storing and / or transferring fluid for use in the galvanic cell.
Owner:GENERAL ELECTRIC CO
Aqueous electrolyte lithium sulfur batteries
InactiveUS20130141050A1Maintain cell integrityMaintain securityBatteries circuit arrangementsFuel and secondary cellsLithium sulfurAqueous electrolyte
Provided are lithium sulfur battery cells that use water as an electrolyte solvent. In various embodiments the water solvent enhances one or more of the following cell attributes: energy density, power density and cycle life. Significant cost reduction can also be realized by using an aqueous electrolyte in combination with a sulfur cathode. For instance, in applications where cost per Watt-Hour (Wh) is paramount, such as grid storage and traction applications, the use of an aqueous electrolyte in combination with inexpensive sulfur as the cathode active material can be a key enabler for the utility and automotive industries, providing a cost effective and compact solution for load leveling, electric vehicles and renewable energy storage.
Owner:POLYPLUS BATTERY CO INC
Alkaline battery
InactiveUS20020127469A1Improve reliabilityImprove the problemSilver accumulatorsPositive electrodesHydrogenOver potential
An alkaline battery constructed of a cathode can and an anode cup in such a way that an open end of the cathode can is sealed by the anode cup, with a gasket interposed between them, characterized in that the open end of the anode cup is folded back in U-shape along its periphery and the fold is tightened for hermetic sealing by the internal periphery of the open end of the cathode can, with the gasket interposed between them, the anode cup has a higher hydrogen over potential material coating layer formed in a limited region on the inside thereof excluding the bottom of the U-shaped fold and the outer periphery of the fold, the cathode can contains the cathode active material and silver-nickelite (AgNiO.sub.2), the anode cup contains the anode mix which is mercury-free zinc or zinc alloy powder as the anode active material.
Owner:MURATA MFG CO LTD
Electro-catalysts for the oxidation of ammonia in alkaline media
An electro-catalyst for the oxidation of ammonia in alkaline media; the electrocatalyst being a noble metal co-deposited on a support with one or more other metals that are active to ammonia oxidation. In some embodiments, the support is platinum, gold, tantalum, or iridium. In some embodiments, the support has a layer of Raney metal deposited thereon prior to the deposition of the catalyst. Also provided are electrodes having the electro-catalyst deposited thereon, ammonia electrolytic cells, ammonia fuel cells, ammonia sensors, and a method for removing ammonia contaminants from a contaminated effluent.
Owner:OHIO UNIV
Electrolyte composition for nickel-zinc batteries
InactiveUS20060127761A1Minimize zinc corrosionFinal product manufactureElectrode carriers/collectorsHigh rateElectrolyte composition
Electrodes and electrolytes for nickel-zinc secondary battery cells possess compositions that limit dendrite formation and other forms of material redistribution in the zinc electrode. In addition, the electrolytes may possess one or more of the following characteristics: good performance at low temperatures, long cycle life, low impedance and suitability for high rate applications.
Owner:ZINCFIVE POWER INC
Lithium battery using an aqueous electrolyte
InactiveUS8597828B2Inherent riskPromote resultsAlkaline accumulatorsSolid electrolyte cellsAqueous electrolyteLithium-ion battery
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Flexible thin printed battery and device and method of manufacturing same
InactiveUS20060115717A1Sufficiently conductiveEliminate needFinal product manufactureElectrode carriers/collectorsElectrical batteryEngineering
A flat, flexible electrochemical cell is provided. The within invention describes various aspects of the flat, flexible electrochemical cell. A printed anode is provided that obviates the need for a discrete anode current collector, thereby reducing the size of the battery. An advantageous electrolyte is provided that enables the use of a metallic cathode current collector, thereby improving the performance of the battery. Printable gelled electrolytes and separators are provided, enabling the construction of both co-facial and co-planar batteries. Cell contacts are provided that reduce the potential for electrolyte creepage in the flat, flexible electrochemical cells of the within invention.
Owner:ENERGIZER BRANDS
Zinc/air cell
InactiveUS20070224495A1Improve ionic conductivityResists deterioration in ionic conductivityFuel and primary cellsNon-aqueous electrolyte accumulator electrodesPolyvinyl alcoholButton battery
A zinc / air depolarized cell wherein the anode comprises zinc particles, aqueous alkaline electrolyte, and aqueous alkaline electrolyte within said anode casing; a cathode within said cathode casing; and an electrolyte permeable separator between said cathode and anode; and a glue comprising crosslinked polyvinylalcohol, preferably crosslinked with a boron containing compound, said glue located between the separator and a side of said cathode to adhesively bond the separator to the cathode. The cell may be in the form of a button cell. The glue provides a strong adhesive bond between the separator, desirably of microporous polypropylene, and the cathode. The glue promotes ionic conductivity at the separator / electrode interface even when the zinc / electrolyte ratio within the anode is elevated.
Owner:DURACELL U S OPERATIONS
Electrolyte balance in electrochemical cells
InactiveUS20020098398A1Fuel and primary cellsElectrolyte moving arrangementsMetal–air electrochemical cellSolvent
A rechargeable metal air electrochemical cell is provided. The rechargeable metal air electrochemical cell generally includes an anode and a cathode in ionic communication via a separator and in fluid communication via one or more tubes or apertures, wherein the one or more tubes or apertures provide sufficient ionic resistance thereby preventing shorting between the electrodes while allowing liquid solvent to flow therebetween.
Owner:EVIONYX INC
Alkaline dry battery
InactiveUS20080171266A1Ensures anticorrosion characteristicHigh aluminum contentCell seperators/membranes/diaphragms/spacersNon-aqueous electrolyte cellsCross-linkIndium
An alkaline dry battery including a zinc negative electrode prepared by dispersing zinc alloy powder containing 0.015 wt % or less of indium and 0.008 wt % to 0.02 wt % both inclusive of aluminum into a gelled alkaline electrolyte containing 0.5 wt % to 3 wt % both inclusive of a cross-linked water-absorbing polyacrylate polymer, a separator made of a single nonwoven fabric sheet or a stack of multiple nonwoven fabric sheets and has a thickness of 360 μm to 880 μm both inclusive and a positive electrode containing manganese dioxide.
Owner:PANASONIC CORP
Akali zinc secondary cell and method for preparation thereof
InactiveUS20020164530A1Excellent in maintaining alkaline aqueous solutionIncrease internal resistanceCell seperators/membranes/diaphragms/spacersNon-aqueous electrolyte cellsAlkaline waterElectrical battery
An alkaline zinc secondary battery in accordance with the present invention comprises a separator layer comprising a gel electrolyte comprising a water absorbent polymer and an alkaline aqueous solution, disposed between a negative electrode comprising at least one selected from the group consisting of zinc and zinc oxide and a positive electrode. Because the separator layer is in a gel form, transfer of zinc ions is limited. Thereby, deformation of the negative electrode and generation of dendrite due to charge and discharge of the battery are substantially inhibited. Moreover, since impurity ions such as nitrate ions become less prone to move, self-discharge of the battery is also inhibited.
Owner:PANASONIC CORP
Electrolyte composition for nickel-zinc batteries
InactiveUS7550230B2Minimize zinc corrosionFinal product manufactureWound/folded electrode electrodesHigh rateElectrolyte composition
Electrodes and electrolytes for nickel-zinc secondary battery cells possess compositions that limit dendrite formation and other forms of material redistribution in the zinc electrode. In addition, the electrolytes may possess one or more of the following characteristics: good performance at low temperatures, long cycle life, low impedance and suitability for high rate applications.
Owner:ZINCFIVE POWER INC
Fuel cell closed structure
A galvanic cell with a closed structure is provided. The cell may include a galvanic cell unit having a metal hydride anode, separators positioned on opposite sides of the metal hydride anode, oxygen electrodes positioned adjacent to the separators on sides opposite to the metal hydride anode, insulator plates positioned in contact with the oxygen electrodes, an electrolyte in contact with any one or more of the metal hydride anode, oxygen electrodes, insulator plates, or separators, and a pressure vessel enclosing the galvanic cell unit.
Owner:GENERAL ELECTRIC CO
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