Patents by Inventor Adrian W. Pullen
Adrian W. Pullen 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).
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Publication number: 20230307630Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by a plurality of nanocrystals with small average crystallite size. The reduced crystallite size reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: ApplicationFiled: May 8, 2023Publication date: September 28, 2023Inventors: Suresh Sriramulu, Jane Rempel, Adrian W. Pullen, David Ofer
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Publication number: 20230197947Abstract: Provided are electrochemically active particles suitable for use as an active material in a cathode of a lithium ion electrochemical cell that include: a plurality of crystallites including a first composition comprising lithium, nickel, and oxygen; and a grain boundary between adjacent crystallites of the plurality of crystallites and comprising a second composition comprising lithium, nickel, and oxygen; wherein the grain boundary has a higher electrochemical affinity for lithium than the crystallites. The higher electrochemical affinity for Li leads to increased Li retention in the grain boundaries during or at charge relative to the bulk crystallites and stabilizes the structure of the grain boundaries and crystallites for improved cycling stability with no appreciable loss in capacity.Type: ApplicationFiled: July 13, 2022Publication date: June 22, 2023Inventors: Jane Rempel, David Ofer, Jennifer A. Nelson, Adrian W. Pullen, Kenan Sahin, Suresh Sriramulu
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Patent number: 11682762Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by a plurality of nanocrystals with small average crystallite size. The reduced crystallite size reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: GrantFiled: September 22, 2021Date of Patent: June 20, 2023Assignee: CAMX Power LLCInventors: Suresh Sriramulu, Jane Rempel, Adrian W. Pullen, David Ofer
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Patent number: 11643336Abstract: Provided are processes for the production of particles for use as a precursor material for synthesis of Li-ion cathode active material of a lithium-ion cell comprising: a non-lithiated nickel oxide particle of the formula MOx wherein M comprises 80 at % Ni or greater and wherein x is 0.7 to 1.2, M optionally excluding boron in the MOx crystal structure; and a modifier oxide intermixed with, coated on, present within, or combinations thereof the non-lithiated nickel oxide particle, wherein the modifier oxide is associated with the non-lithiated nickel oxide such that a calcination at 500 degrees Celsius for 2 hours results in crystallite growth measured by XRD of 2 nanometers or less.Type: GrantFiled: March 7, 2022Date of Patent: May 9, 2023Assignee: CAMX Power LLCInventors: Adrian W. Pullen, Suresh Sriramulu
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Publication number: 20220185692Abstract: Provided are processes for the production of particles for use as a precursor material for synthesis of Li-ion cathode active material of a lithium-ion cell comprising: a non-lithiated nickel oxide particle of the formula MOx wherein M comprises 80 at % Ni or greater and wherein x is 0.7 to 1.2, M optionally excluding boron in the MOx crystal structure; and a modifier oxide intermixed with, coated on, present within, or combinations thereof the non-lithiated nickel oxide particle, wherein the modifier oxide is associated with the non-lithiated nickel oxide such that a calcination at 500 degrees Celsius for 2 hours results in crystallite growth measured by XRD of 2 nanometers or less.Type: ApplicationFiled: March 7, 2022Publication date: June 16, 2022Inventors: Adrian W. Pullen, Suresh Sriramulu
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Patent number: 11299402Abstract: Provided are particles for use as a precursor material for synthesis of Li-ion cathode active material of a lithium-ion cell comprising: a non-lithiated nickel oxide particle of the formula MOx wherein M comprises 80 at % Ni or greater and wherein x is 0.7 to 1.2, M optionally excluding boron in the MOx crystal structure; and a modifier oxide intermixed with, coated on, present within, or combinations thereof the non-lithiated nickel oxide particle, wherein the modifier oxide is associated with the non-lithiated nickel oxide such that a calcination at 500 degrees Celsius for 2 hours results in crystallite growth measured by XRD of 2 nanometers or less. Also provided are processes of forming electrochemically active particles using the precursors nickel oxides.Type: GrantFiled: October 24, 2019Date of Patent: April 12, 2022Assignee: CAMX Power LLCInventors: Adrian W. Pullen, Suresh Sriramulu
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Publication number: 20220006086Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by a plurality of nanocrystals with small average crystallite size. The reduced crystallite size reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: ApplicationFiled: September 22, 2021Publication date: January 6, 2022Inventors: Suresh Sriramulu, Jane Rempel, Adrian W. Pullen, David Ofer
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Publication number: 20210122645Abstract: Provided are particles for use as a precursor material for synthesis of Li-ion cathode active material of a lithium-ion cell comprising: a non-lithiated nickel oxide particle of the formula MOx wherein M comprises 80 at % Ni or greater and wherein x is 0.7 to 1.2, M optionally excluding boron in the MOx crystal structure; and a modifier oxide intermixed with, coated on, present within, or combinations thereof the non-lithiated nickel oxide particle, wherein the modifier oxide is associated with the non-lithiated nickel oxide such that a calcination at 500 degrees Celsius for 2 hours results in crystallite growth measured by XRD of 2 nanometers or less. Also provided are processes of forming electrochemically active particles using the precursors nickel oxides.Type: ApplicationFiled: October 24, 2019Publication date: April 29, 2021Inventors: Adrian W. Pullen, Suresh Sriramulu
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Patent number: 10950857Abstract: Provided are electrochemical cells that include as a cathode active material within the cathode of the cell secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by grain boundaries between adjacent crystallites of the plurality of crystallites and comprising a second composition having a layered ?-NaFeO2-type structure, a cubic structure, a spinel structure, or a combination thereof, wherein the electrochemically active cathode active material has an initial discharge capacity of 180 mAh/g or greater; and wherein the electrochemical cell has an impedance growth at 4.2V less than 50% for greater than 100 cycles at 45° C.Type: GrantFiled: January 17, 2019Date of Patent: March 16, 2021Assignee: CAMX Power LLCInventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Publication number: 20200403225Abstract: Provided herein are materials for use and processes of forming a material suitable for use in coating an electrically conductive substrate as used in an electrode for an electrochemical cell. The processes combine a cathode active material, a binder comprising a halogenated hydrocarbon polymer, a solvent, and an additive suitable for reacting with a double unsaturation when formed on the binder, and intermixing the cathode slurry to produce a cathode coating material. The presence of the additive is to react with one or more conjugated dienes formed by reaction of the binder with the cathode active material or portion thereof so as to prevent gelling or unacceptable increases in viscosity during electrode formation or storage of the cathode coating material.Type: ApplicationFiled: June 20, 2019Publication date: December 24, 2020Inventor: Adrian W. Pullen
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Patent number: 10843936Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: GrantFiled: May 19, 2020Date of Patent: November 24, 2020Assignee: CAMX Power LLCInventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Patent number: 10793445Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: GrantFiled: October 23, 2019Date of Patent: October 6, 2020Assignee: CAMX Power LLCInventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Publication number: 20200277199Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: ApplicationFiled: May 19, 2020Publication date: September 3, 2020Inventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Publication number: 20200231463Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: ApplicationFiled: October 23, 2019Publication date: July 23, 2020Inventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Publication number: 20200235389Abstract: Provided are electrochemical cells that include as a cathode active material within the cathode of the cell secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by grain boundaries between adjacent crystallites of the plurality of crystallites and comprising a second composition having a layered ?-NaFeO2-type structure, a cubic structure, a spinel structure, or a combination thereof, wherein the electrochemically active cathode active material has an initial discharge capacity of 180 mAh/g or greater; and wherein the electrochemical cell has an impedance growth at 4.2V less than 50% for greater than 100 cycles at 45° C.Type: ApplicationFiled: January 17, 2019Publication date: July 23, 2020Inventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin
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Patent number: 10501335Abstract: Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched Al. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.Type: GrantFiled: January 17, 2019Date of Patent: December 10, 2019Assignee: CAMX Power LLCInventors: Adrian W. Pullen, David Ofer, Suresh Sriramulu, Kenan Sahin, Jane Rempel
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Patent number: 9391317Abstract: A particle, including: a plurality of crystallites including a first composition having a layered ?-NaFeO2-type structure and including lithium in an amount of about 0.1 to about 1.3 moles, per mole of the first composition, nickel in an amount of about 0.1 to about 0.79 mole, per mole of the first composition, cobalt in an amount of 0 to about 0.5 mole, per mole of the first composition, and oxygen in an amount of about 1.7 to about 2.3 moles, per mole of the first composition; and a grain boundary between adjacent crystallites of the plurality of crystallites and including a second composition having the layered ?-NaFeO2-type structure, a cubic structure, or a combination thereof, wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites.Type: GrantFiled: September 25, 2015Date of Patent: July 12, 2016Assignee: TIAX LLCInventors: David Ofer, Adrian W. Pullen, Suresh Sriramulu
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Publication number: 20160013475Abstract: A particle, including: a plurality of crystallites including a first composition having a layered ?-NaFeO2-type structure and including lithium in an amount of about 0.1 to about 1.3 moles, per mole of the first composition, nickel in an amount of about 0.1 to about 0.79 mole, per mole of the first composition, cobalt in an amount of 0 to about 0.5 mole, per mole of the first composition, and oxygen in an amount of about 1.7 to about 2.3 moles, per mole of the first composition; and a grain boundary between adjacent crystallites of the plurality of crystallites and including a second composition having the layered ?-NaFeO2-type structure, a cubic structure, or a combination thereof, wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites.Type: ApplicationFiled: September 25, 2015Publication date: January 14, 2016Inventors: David Ofer, Adrian W. Pullen, Suresh Sriramulu
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Patent number: 9209455Abstract: A particle, including: a plurality of crystallites including a first composition having a layered ?-NaFeO2-type structure and including lithium in an amount of about 0.1 to about 1.3 moles, per mole of the first composition, nickel in an amount of about 0.1 to about 0.79 mole, per mole of the first composition, cobalt in an amount of 0 to about 0.5 mole, per mole of the first composition, and oxygen in an amount of about 1.7 to about 2.3 moles, per mole of the first composition; and a grain boundary between adjacent crystallites of the plurality of crystallites and including a second composition having the layered ?-NaFeO2-type structure, a cubic structure, or a combination thereof, wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites.Type: GrantFiled: July 27, 2012Date of Patent: December 8, 2015Assignee: TIAX LLCInventors: David Ofer, Adrian W. Pullen, Suresh Sriramulu
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Publication number: 20140197357Abstract: A particle, including: a plurality of crystallites including a first composition having a layered ?-NaFeO2-type structure and including lithium in an amount of about 0.1 to about 1.3 moles, per mole of the first composition, nickel in an amount of about 0.1 to about 0.79 mole, per mole of the first composition, cobalt in an amount of 0 to about 0.5 mole, per mole of the first composition, and oxygen in an amount of about 1.7 to about 2.3 moles, per mole of the first composition; and a grain boundary between adjacent crystallites of the plurality of crystallites and including a second composition having the layered ?-NaFeO2-type structure, a cubic structure, or a combination thereof, wherein a concentration of cobalt in the grain boundary is greater than a concentration of cobalt in the crystallites.Type: ApplicationFiled: July 27, 2012Publication date: July 17, 2014Applicant: TIAX LLCInventors: David Ofer, Adrian W. Pullen, Suresh Sriamulu