Patents by Inventor Jane Rempel
Jane Rempel 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: 20240079578Abstract: Provided are methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: David Ofer, Jane Rempel, Suresh Sriramulu
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Patent number: 11855282Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.Type: GrantFiled: June 16, 2022Date of Patent: December 26, 2023Assignee: CAMX Power LLCInventors: David Ofer, Jane Rempel, Suresh Sriramulu
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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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Publication number: 20220328820Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.Type: ApplicationFiled: June 16, 2022Publication date: October 13, 2022Inventors: David Ofer, Jane Rempel, Suresh Sriramulu
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Patent number: 11424449Abstract: 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 comprising 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: GrantFiled: December 27, 2019Date of Patent: August 23, 2022Assignee: CAMX Power LLCInventors: Jane Rempel, David Ofer, Jennifer A. Nelson, Adrian Pullen, Kenan Sahin, Suresh Sriramulu
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Patent number: 11394023Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.Type: GrantFiled: February 9, 2017Date of Patent: July 19, 2022Assignee: CAMX Power LLCInventors: David Ofer, Jane Rempel, 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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Patent number: 11158853Abstract: 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: April 27, 2017Date of Patent: October 26, 2021Assignee: CAMX Power LLCInventors: Adrian Pullen, Jane Rempel, Suresh Sriramulu, David Ofer
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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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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: 20200243859Abstract: 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 comprising 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: December 27, 2019Publication date: July 30, 2020Inventors: Jane Rempel, David Ofer, Jennifer A. Nelson, Adrian Pullen, Kenan Sahin, Suresh Sriramulu
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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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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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Publication number: 20190140276Abstract: 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: April 27, 2017Publication date: May 9, 2019Inventors: Adrian Pullen, Jane Rempel, Suresh Sriramulu
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Publication number: 20190036118Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.Type: ApplicationFiled: February 9, 2017Publication date: January 31, 2019Inventors: David Ofer, Jane Rempel, Suresh Sriramulu