Patents by Inventor Jeffrey B. Wolfenstine

Jeffrey B. Wolfenstine 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).

  • High voltage lithium ion positive electrode material
    Patent number: 10586985
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4. Additional compositional modification to include Si increases the cycle life and greatly improved the coulombic efficiency to between 97-100% at a C/3 cycle rate.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 10, 2020
    Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE ARMY
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow
  • HIGH VOLTAGE LITHIUM ION POSITIVE ELECTRODE MATERIAL
    Publication number: 20190245205
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4. Additional compositional modification to include Si increases the cycle life and greatly improved the coulombic efficiency to between 97-100% at a C/3 cycle rate.
    Type: Application
    Filed: November 27, 2018
    Publication date: August 8, 2019
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow
  • High voltage lithium ion positive electrode material
    Patent number: 10147946
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4. Additional compositional modification to include Si increases the cycle life and greatly improved the coulombic efficiency to between 97-100% at a C/3 cycle rate.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: December 4, 2018
    Assignee: The United States of America, as represented by the secretary of the army
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow
  • HIGH VOLTAGE LITHIUM ION POSITIVE ELECTRODE MATERIAL
    Publication number: 20160233508
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4. Additional compositional modification to include Si increases the cycle life and greatly improved the coulombic efficiency to between 97-100% at a C/3 cycle rate.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 11, 2016
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow
  • High voltage lithium ion positive electrode material
    Patent number: 9356291
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4. Additional compositional modification to include Si increases the cycle life and greatly improved the coulombic efficiency to between 97-100% at a C/3 cycle rate.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: May 31, 2016
    Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE ARMY
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow
  • HIGH VOLTAGE LITHIUM ION POSITIVE ELECTRODE MATERIAL
    Publication number: 20150155558
    Abstract: A positive electrode material having a nominal stoichiometry Li1+y/2Co1?x?y?z?dSizFexMyM?d(PO4)1+y/2 where M is a trivalent cation selected from at least one of Cr, Ti, Al, Mn, Ni, V, Sc, La and/or Ga, M? is a divalent cation selected from at least one of Mn, Ni, Zn, Sr, Cu, Ca and/or Mg, y is within a range of 0<y?0.10 and x is within a range of 0?x?0.2. The use of double compositional modification to LiCoPO4 increases the discharge capacity from ˜100 mAh/g to about 130 mAh/g while retaining the discharge capacity retention of the singly Fe-substituted LiCoPO4.
    Type: Application
    Filed: May 20, 2014
    Publication date: June 4, 2015
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Jan L. Allen, Joshua L. Allen, Samuel A. Delp, III, Jeffrey B. Wolfenstine, T. Richard Jow