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Assignee: Valence Technology, Inc.


Location: Henderson, NV
No. of patents: 146

1        
NumberTitleIssue Date
7008566Oligo phosphate-based electrode active materials and methods of making same
The invention provides an electrochemical cell which includes a first electrode and a second electrode which is a counter electrode to said first electrode, and an electrolyte material interposed there between. The first electrode includes an active material having ...
03/07/2006
7001690Lithium-based active materials and preparation thereof
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed fr...
02/21/2006
6964827Alkali/transition metal halo- and hydroxy-phosphates and related electrode active materials
The present invention relates to novel electrode active materials represented by the general formula AaMb(XY4)cZd, wherein: (a) A is one or more alkali metals, and 0
11/15/2005
6960331Methods of making lithium metal cathode active materials
The invention provides a novel method for making lithium mixed metal materials in electrochemical cells. The lithium mixed metal materials comprise lithium and at least one other metal besides lithium. The invention involves the reaction of a metal compound, a phosp...
11/01/2005
6933078Crosslinked polymer electrolytes and method of making such crosslinked polymers
This invention relates to crosslinked polymers useful as electrolytes in rechargeable batteries, to electrolytes containing such crosslinked polymers, to methods for making such polymer electrolytes, to electrodes incorporating such crosslinked polymers, to recharge...
08/23/2005
6919708Electrical storage circuitry operational methods
Circuits, apparatuses, electrochemical device charging methods, and lithium-mixed metal electrode cell charging methods are provided. According to one aspect, a circuit includes charging circuitry adapted to apply electrical energy to an electrochemical device to ch...
07/19/2005
6913855Method of synthesizing electrochemically active materials from a slurry of precursors
A method for making an active material comprises the steps of forming a slurry, spray drying the slurry to form a powdered precursor composition, and heating the powdered precursor composition at a temperature and for a time sufficient to form a reaction product. Th...
07/05/2005
6914417Electrical energy systems, power supply apparatuses, and electrical energy supply methods
An electrical energy system comprising a power supply apparatus having an electrical energy storage device for storing electrical energy, an external load having one or more batteries, the load adapted to receive electrical energy from the electrical energy storage ...
07/05/2005
6908710Lithiated molybdenum oxide active materials
The invention provides lithiated molybdenum oxides useful as cathode (positive electrode) active materials in rechargeable batteries, especially in lithium ion rechargeable batteries. In one aspect, the invention provides lithiated molybdenum oxides, some of which c...
06/21/2005
6890686Lithium-containing phosphate active materials
The invention provides novel lithium-containing phosphate materials having a high proportion of lithium per formula unit of the material. Upon electrochemical interaction, such material deintercalates lithium ions, and is capable of reversibly cycling lithium ions. ...
05/10/2005
6884544Lithium-based active materials and preparation thereof
The invention provides novel active material represented by the general formula LiaMI1-yMIIyPO4, wherein MI is selected from the group consisting of Fe, Ni, Mn, V, Sn, Ti, Cr, and mixtures thereof; MII is selected from the...
04/26/2005
6872492Sodium ion batteries
Sodium ion batteries are based on sodium based active materials selected among compounds of the general formula: AaMb(XY4)cZd, wherein A comprises sodium, M comprises one or more metals, comp...
03/29/2005
6869547Stabilized electrochemical cell active material
Stabilized lithiated manganese oxide (LMO) is prepared by reacting cubic spinel lithium manganese oxide particles and particles of an alkali metal compound in air for a time and at a temperature sufficient to decompose at least a portion of the alkali metal compound...
03/22/2005
6855462Lithium metal fluorophosphate materials and preparation thereof
The invention provides new and novel lithium-metal-fluorophosphates which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode ...
02/15/2005
6815122Alkali transition metal phosphates and related electrode active materials
Electrode active materials comprising lithium or other alkali metals, a transition metal, and a phosphate or similar moiety, of the formula: Aa+xMbP1−xSixO4 wherein ...
11/09/2004
6809500Power supply apparatuses and power supply operational methods
Power supply apparatuses and power supply operational methods are provided. According to one aspect, a power supply apparatus includes a power node, an electrochemical device configured to store electrical energy, a switch including a control node and the switch is ...
10/26/2004
6798170Electrical power source apparatuses, circuits, electrochemical device charging methods, and methods of charging a plurality of electrochemical devices
Electrical power source apparatuses, circuits, electrochemical device charging methods, and methods of charging a plurality of electrochemical devices are provided. According to one aspect, an electrical power source apparatus includes a plurality of charging nodes,...
09/28/2004
6794084Alkali metal hydrogen phosphates as precursors for phosphate-containing electrochemical active materials
The present invention relates general to a method for making an alkali metal hydrogen phosphate of the general formula AxH3−xPO4, wherein A is an alkali metal and 0≦x≦3, prepared by admixing an alkali metal-containing compound,...
09/21/2004
6777132Alkali/transition metal halo—and hydroxy-phosphates and related electrode active materials
The present invention relates to novel electrode active materials represented by the general formula AaMb(XY4)cZd, wherein: (a) A is one or more alkali metals, and 0
08/17/2004
6765368Electrical energy apparatuses, electrical energy conditioning circuits, and electrical supply methods
Power supply apparatuses and methods of supplying electrical energy are provided. According to one aspect, a power supply apparatus includes an electrochemical device configured to store electrical energy, a first interface coupled with the electrochemical device an...
07/20/2004
6730281Methods of making transition metal compounds useful as cathode active materials
A method for carrying out solid state reactions under reducing conditions is provided. Solid state reactants include at least one inorganic metal compound and a source of reducing carbon. The reaction may be carried out in a reducing atmosphere in the presence of re...
05/04/2004
6723470Lithium-based active materials and preparation thereof
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed fr...
04/20/2004
6724173Circuits, apparatuses, electrochemical device charging methods, and lithium-mixed metal electrode cell charging methods
Circuits, apparatuses, electrochemical device charging methods, and lithium-mixed metal electrode cell charging methods are provided. According to one aspect, a circuit includes charging circuitry adapted to apply electrical energy to an electrochemical device to ch...
04/20/2004
6720110Lithium-containing phosphates, method of preparation, and uses thereof
The invention provides an electrochemical cell which comprises a first electrode and a second electrode which is a counter electrode to said first electrode. The first electrode comprises a phosphorous compound of the nominal general formula Li3E′a...
04/13/2004
6720112Lithium cell based on lithiated transition metal titanates
An electrochemical active material contains a lithiated zirconium, titanium, or mixed titanium/zirconium oxide. The oxide can be represented by the formula LiM′M″XO4, where M′ is a transition metal, M″ is an optional three valent non-transition me...
04/13/2004
6716372Lithium-containing materials
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed fr...
04/06/2004
6706445Synthesis of lithiated transition metal titanates for lithium cells
An electrochemical active material contains a lithiated zirconium, titanium, or mixed titanium/zirconium oxide. The oxide can be represented by the formula LiM′M″XO4, where M′ is a transition metal, M″ is an optional three valent non-transition me...
03/16/2004
6702961Preparation of lithium-containing materials
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrod...
03/09/2004
6667599Power supply apparatuses and methods of supplying electrical energy
Power supply apparatuses and methods of supplying electrical energy are provided. According to one aspect, a power supply apparatus includes an electrochemical device configured to store electrical energy, a first interface coupled with the electrochemica...
12/23/2003
6645452Methods of making lithium metal cathode active materials
The invention provides a method for making lithium mixed metal materials in electrochemical cells. The lithium mixed metal materials comprise lithium and at least one other metal besides lithium. The invention involves the reaction of a metal compound, an...
11/11/2003
6596435Lithium manganese oxide-based active material
The invention provides an electrochemically active material comprising particles of spinel lithium manganese oxide having on the surface of each particle cationic metal species bound to the spinel at anionic sites of the particle surface; where the cation...
07/22/2003
6579643Separator having a plasticizer coating for use in electrochemical cell devices
A separator for use in laminated multi-layer electrochemical cell device structures. The devices comprise positive and negative electrode layer members of polymeric matrix composition having the microporous polyolefin membrane separator member interposed ...
06/17/2003
6555026Stabilized electrochemical cell active material
A composition and a method for forming the composition stabilized against capacity degradation comprises particles of spinel lithium manganese oxide (LMO) enriched with lithium by a decomposition product of lithium carbonate forming a part of each said pa...
04/29/2003
6541155Bicell battery apparatus
In one implementation, a bicell battery apparatus includes first and second counter electrodes and an intermediate electrode positioned therebetween. Respective end edges of the first and second counter electrodes are received outwardly beyond a respectiv...
04/01/2003
6537334Polymeric mesoporous separator elements for laminated lithium-ion rechargeable batteries
A mesoporous polymeric membrane for use as an ionically-conductive inter-electrode separator in a rechargeable battery cell is prepared from a coatable composition comprising a polymeric material, a volatile fluid solvent for the polymeric material, and a...
03/25/2003
6537703Polymeric mesoporous separator elements for laminated lithium-ion rechargeable batteries
A mesoporous polymeric membrane for use as an ionically-conductive inter-electrode separator in a rechargeable battery cell contains a like distribution of mesopore voids throughout a membrane matrix. The porous membrane is capable of absorbing significan...
03/25/2003
6528033Method of making lithium-containing materials
The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrod...
03/04/2003
6524741Battery package with integral disconnect mechanism
A battery package assembly comprises a package having an interior volume sealingly containing at least one electrochemical cell therein, and opposite polarity electrical connectors adapted to connect said at least one electrochemical cell to an external l...
02/25/2003
6468695Active material having extended cycle life
In one embodiment, the invention provides a novel composition which is stabilized against decomposition when used as an active material for an electrochemical cell. The active material of the present invention comprises particles of spinel lithium mangane...
10/22/2002
6467156Method and apparatus for preparing electrochemical cells
A method of fabricating electrochemical cells and batteries wherein the successive anode and cathode layers are separated by a polymeric electrolyte layer having a protruding polymer edge around its perimeter which reduces the likelihood of inadvertent co...
10/22/2002
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