Patents by Inventor Jeffrey Swoyer

Jeffrey Swoyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8163430
    Abstract: Active materials of the invention contain at least one alkali metal and at least one other metal capable of being oxidized to a higher oxidation state. Preferred other metals are accordingly selected from the group consisting of transition metals (defined as Groups 4-11 of the periodic table), as well as certain other non-transition metals such as tin, bismuth, and lead. The active materials may be synthesized in single step reactions or in multi-step reactions. In at least one of the steps of the synthesis reaction, reducing carbon is used as a starting material. In one aspect, the reducing carbon is provided by elemental carbon, preferably in particulate form such as graphites, amorphous carbon, carbon blacks and the like. In another aspect, reducing carbon may also be provided by an organic precursor material, or by a mixture of elemental carbon and organic precursor material.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 24, 2012
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, Yazid Saidi, Ming Dong, Jeffrey Swoyer
  • Patent number: 7960059
    Abstract: Methods for producing an electrode active material precursor, comprising; a) producing a mixture comprising particles of lithium hydrogen phosphate, having a first average particle size, and a metal hydroxide, having a second average particle size; and b) grinding said mixture in a jet mill for a period of time suitable to produce a generally homogeneous mixture of particles having a third average size smaller than said first average size. The precursor may be used as a starting material for making electrode active materials for use in a battery, comprising lithium, a transition metal, and phosphate or a similar anion.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: June 14, 2011
    Assignee: Valence Technology, Inc.
    Inventors: George Adamson, Jeremy Barker, Allan Dirilo, Titus Faulkner, M. Yazid Saidi, Jeffrey Swoyer
  • Publication number: 20110085958
    Abstract: The present invention relates to a method for preparing a lithium vanadium phosphate material comprising forming a aqueous slurry (in which some of the components are at least partially dissolved) comprising a polymeric material, an acidic phosphate anion source, a lithium compound, V2O5 and a source of carbon; wet blending said slurry, spray drying said slurry to form a precursor composition; and heating said precursor composition to produce a lithium vanadium phosphate.
    Type: Application
    Filed: December 16, 2010
    Publication date: April 14, 2011
    Inventors: Jeffrey Swoyer, M. Yazid Saidi, Titus Faulker
  • Patent number: 7901810
    Abstract: Active materials for rechargeable batteries have a general formula Aa(MO)bM?cXO4 where A represents an alkali metal or mixture of alkali metals, a is greater than about 0.1 and less than or equal to about 2; MO is an ion containing a transition metal M not in its highest oxidation state, M? represents a metal, or mixture of metals, and b is greater than 0 and less than or equal to about 1, c is less than 1 wherein a, b and c are selected so as to maintain the electroneutrality of the compound, and X is phosphorus, arsenic, or sulfur, or mixtures thereof. Preferred active materials are alkali metal vanadyl metal phosphates of general formula Aa(VO)bM?cPO4 where a and b are both greater than 0 and c may be zero or greater. New synthetic routes are provided to alkali metal mixed metal phosphates where at least one of the starting materials is a metal-oxo group (MO)3+, where M represents a metal in a +5 oxidation state.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: March 8, 2011
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Patent number: 7767332
    Abstract: 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 (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0<a<1.0 and 0?x?1; (b) M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, where 0<b?2; and wherein M, a, b, and x are selected so as to maintain electroneutrality of said compound.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: August 3, 2010
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Patent number: 7759008
    Abstract: 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, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, Z is OH or halogen, and XY4 represents phosphate or a similar group. The anode of the battery includes a carbon material that is capable of inserting sodium ions. The carbon anode cycles reversibly at a specific capacity greater than 100 mAh/g.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: July 20, 2010
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Patent number: 7550098
    Abstract: Active materials of the invention contain at least one alkali metal and at least one other metal capable of being oxidized to a higher oxidation state. Preferred other metals are accordingly selected from the group consisting of transition metals (defined as Groups 4-11 of the periodic table), as well as certain other non-transition metals such as tin, bismuth, and lead. The active materials may be synthesized in single step reactions or in multi-step reactions. In at least one of the steps of the synthesis reaction, reducing carbon is used as a starting material. In one aspect, the reducing carbon is provided by elemental carbon, preferably in particulate form such as graphites, amorphous carbon, carbon blacks and the like. In another aspect, reducing carbon may also be provided by an organic precursor material, or by a mixture of elemental carbon and organic precursor material.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: June 23, 2009
    Assignee: Valence Technology, Inc.
    Inventors: Jerry Barker, Yazid Saidi, Ming Dong, Jeffrey Swoyer
  • Publication number: 20090035661
    Abstract: The present invention relates to a method for preparing a lithium vanadium phosphate material comprising forming a aqueous slurry (in which some of the components are at least partially dissolved) comprising a polymeric material, an acidic phosphate anion source, a lithium compound, V2O5 and a source of carbon; wet blending said slurry, spray drying said slurry to form a precursor composition; and heating said precursor composition to produce a lithium vanadium phosphate.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 5, 2009
    Inventors: Jeffrey Swoyer, M. Yazid Saidi, Titus Faulkner
  • Publication number: 20080157024
    Abstract: Methods for producing an electrode active material precursor, comprising; a) producing a mixture comprising particles of lithium hydrogen phosphate, having a first average particle size, and a metal hydroxide, having a second average particle size; and b) grinding said mixture in a jet mill for a period of time suitable to produce a generally homogeneous mixture of particles having a third average size smaller than said first average size. The precursor may be used as a starting material for making electrode active materials for use in a battery, comprising lithium, a transition metal, and phosphate or a similar anion.
    Type: Application
    Filed: March 12, 2008
    Publication date: July 3, 2008
    Inventors: George Adamson, Jeremy Barker, Allan Dirilo, Titus Faulkner, M. Yazid Saidi, Jeffrey Swoyer
  • Publication number: 20080099720
    Abstract: The present invention relates to a method for preparing an electroactive metal polyanion or a mixed metal polyanion comprising forming a slurry comprising a polymeric material, a solvent, a polyanion source or alkali metal polyanion source and at least one metal ion source; heating said slurry at a temperature and for a time sufficient to remove the solvent and form an essentially dried mixture; and heating said mixture at a temperature and for a time sufficient to produce an electroactive metal polyanion or electroactive mixed metal polyanion. The electrochemically active materials so produced are useful in making electrodes and batteries.
    Type: Application
    Filed: January 3, 2008
    Publication date: May 1, 2008
    Inventors: Biying Huang, Jeffrey Swoyer, M. Saidi, Haitao Huang
  • Patent number: 7348100
    Abstract: Methods for producing an electrode active material precursor, comprising: a) producing a mixture comprising particles of lithium hydrogen phosphate, having a first average particle size, and a metal hydroxide, having a second average particle size; and b) grinding said mixture in a jet mill for a period of time suitable to produce a generally homogeneous mixture of particles having a third average size smaller than said first average size. The precursor may be used as a starting material for making electrode active materials for use in a battery, comprising lithium, a transition metal, and phosphate or a similar anion.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: March 25, 2008
    Assignee: Valence Technology, Inc.
    Inventors: George Adamson, Jeremy Barker, Allan Dirilo, Titus Faulkner, M. Yazid Saidi, Jeffrey Swoyer
  • Patent number: 7338647
    Abstract: The present invention relates to a method for preparing an electroactive metal polyanion or a mixed metal polyanion comprising forming a slurry comprising a polymeric material, a solvent, a polyanion source or alkali metal polyanion source and at least one metal ion source; heating said slurry at a temperature and for a time sufficient to remove the solvent and form an essentially dried mixture; and heating said mixture at a temperature and for a time sufficient to produce an electroactive metal polyanion or electroactive mixed metal polyanion.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: March 4, 2008
    Assignee: Valence Technology, Inc.
    Inventors: Biying Huang, Jeffrey Swoyer, M. Yazid Saidi, Haitao Huang
  • Publication number: 20080020277
    Abstract: 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 reducing carbon. Reducing carbon may be supplied by elemental carbon, by an organic material, or by mixtures. The organic material is one that can form decomposition products containing carbon in a form capable of acting as a reductant. The reaction proceeds without significant covalent incorporation of organic material into the reaction product. In a preferred embodiment, the solid state reactants also include an alkali metal compound. The products of the method find use in lithium ion batteries as cathode active materials. Preferred active materials include lithium-transition metal phosphates and lithium-transition metal oxides.
    Type: Application
    Filed: August 21, 2007
    Publication date: January 24, 2008
    Inventors: Jeremy Barker, M. Saidi, Jeffrey Swoyer, Ming Dong
  • Patent number: 7276218
    Abstract: 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 reducing carbon. Reducing carbon may be supplied by elemental carbon, by an organic material, or by mixtures. The organic material is one that can form decomposition products containing carbon in a form capable of acting as a reductant. The reaction proceeds without significant covalent incorporation of organic material into the reaction product. In a preferred embodiment, the solid state reactants also include an alkali metal compound. The products of the method find use in lithium ion batteries as cathode active materials. Preferred active materials include lithium-transition metal phosphates and lithium-transition metal oxides.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: October 2, 2007
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer, Ming Dong
  • Patent number: 7270915
    Abstract: The present invention relates to novel battery having a first electrode comprising an electrode active material represented by the general formula AaMb(XY4)2Zd, a second electrode which is a counter-electrode to the first electrode; and an electrolyte.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: September 18, 2007
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Patent number: 7261977
    Abstract: 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 formed from the novel lithium-metal-fluorophosphates. The lithium-metal-fluorophosphates comprise lithium and at least one other metal besides lithium.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: August 28, 2007
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Publication number: 20070190425
    Abstract: The invention provides a novel polyanion-based electrode active material for use in a secondary or rechargeable electrochemical cell, wherein the electrode active material is represented by the general formula AaMb(XY4)2Zd.
    Type: Application
    Filed: April 12, 2007
    Publication date: August 16, 2007
    Inventors: Jeremy Barker, M. Saidi, Jeffrey Swoyer
  • Patent number: 7214448
    Abstract: The present invention relates to novel electrode active materials represented by the general formula AaMb(XY4)2Zd, wherein: (a) A is one or more alkali metals, and 0<a?8; (b) M is at least one metal capable of undergoing oxidation to a higher valence state, and 1?b?3; (c) XY4 is selected from the group consisting of X?O4?xY?x, X?O4?yY?2?y, X?S4, and a mixture thereof, where X? is P, As, Sb, Si, Ge, S, and mixtures thereof; X? is P, As, Sb, Si, Ge, and mixtures thereof, Y? is halogen, 0?x<3, 0<y<4, and 0<c?3; and (d) Z is OH, a halogen, or mixtures thereof, and 0<d?6.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: May 8, 2007
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
  • Publication number: 20070001153
    Abstract: Active materials of the invention contain at least one alkali metal and at least one other metal capable of being oxidized to a higher oxidation state. Preferred other metals are accordingly selected from the group consisting of transition metals (defined as Groups 4-11 of the periodic table), as well as certain other non-transition metals such as tin, bismuth, and lead. The active materials may be synthesized in single step reactions or in multi-step reactions. In at least one of the steps of the synthesis reaction, reducing carbon is used as a starting material. In one aspect, the reducing carbon is provided by elemental carbon, preferably in particulate form such as graphites, amorphous carbon, carbon blacks and the like. In another aspect, reducing carbon may also be provided by an organic precursor material, or by a mixture of elemental carbon and organic precursor material.
    Type: Application
    Filed: July 26, 2005
    Publication date: January 4, 2007
    Inventors: Jeremy Barker, Yazid Saidi, Ming Dong, Jeffrey Swoyer
  • Publication number: 20060246351
    Abstract: 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 (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0<a<1.0 and 0<x<1; (b) M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, where 0<b<2; and wherein M, a, b, and x are selected so as to maintain electroneutrality of said compound.
    Type: Application
    Filed: July 12, 2006
    Publication date: November 2, 2006
    Inventors: Jeremy Barker, M. Saidi, Jeffrey Swoyer