Patents by Inventor Erika Nagai

Erika Nagai 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).

  • Microwave synthesis of lithium thiophosphate composite materials
    Patent number: 11325096
    Abstract: A microwave induced solvothermal method to prepare lithium thiophosphate composites including ?-Li3PS4 and crystalline Li7P3S11 is provided. The method is scaleable to commercial size production.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: May 10, 2022
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: John Muldoon, Patrick J. Bonnick, Koji Suto, Erika Nagai, Keita Niitani
  • Air stable lithium sulfide cathode compositions, methods for producing them, and solid-state lithium batteries incorporating the same
    Patent number: 10784505
    Abstract: A lithium sulfide (Li2Sw)-lithium phosphorus sulfide (LixPySz) composite, electrochemical cells comprising the same, and methods for making the same are described herein. By the mechanochemical method described herein, the Li2Sw—LixPySz composite can be formed and used as the active material in a positive electrode for a variety of electrochemical cells. It is shown herein that the composite is an electrochemically active cathode material. Further, it has been shown that the Li2Sw—LixPySz composite shows increased resistance to decomposition and H2S generation than Li2S.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: September 22, 2020
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Timothy S. Arthur, Patrick J. Bonnick, John Muldoon, Erika Nagai
  • AIR STABLE LITHIUM SULFIDE CATHODE
    Publication number: 20200052285
    Abstract: A lithium sulfide (Li2Sw)-lithium phosphorus sulfide (LixPySz) composite, electrochemical cells comprising the same, and methods for making the same are described herein. By the mechanochemical method described herein, the Li2Sw—LixPySz composite can be formed and used as the active material in a positive electrode for a variety of electrochemical cells. It is shown herein that the composite is an electrochemically active cathode material. Further, it has been shown that the Li2Sw—LixPySz composite shows increased resistance to decomposition and H2S generation than Li2S.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 13, 2020
    Inventors: Timothy S. Arthur, Patrick J. Bonnick, John Muldoon, Erika Nagai
  • MICROWAVE SYNTHESIS OF LITHIUM THIOPHOSPHATE COMPOSITE MATERIALS
    Publication number: 20200030768
    Abstract: A microwave induced solvothermal method to prepare lithium thiophosphate composites including ?-Li3PS4 and crystalline Li7P3S11 is provided. The method is scaleable to commercial size production.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 30, 2020
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: John Muldoon, Patrick J. Bonnick, Koji Suto, Erika Nagai, Keita Niitani
  • INTERPHASE BETWEEN LITHIUM METAL AND SOLID ELECTROLYTE
    Publication number: 20190221851
    Abstract: A lithium metal electrode having an artificial interphase layer is provided. The artificial interphase layer conducts lithium ions but is nonconductive of electrons. A method to prepare the lithium metal electrode is also provided. A solid state electrochemical cell containing the lithium metal electrode is provided. A solid state lithium-sulfur electrochemical cell is provided which has a sustained discharge capacity of about 3 mAh/cm2.
    Type: Application
    Filed: January 31, 2018
    Publication date: July 18, 2019
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: John Muldoon, Patrick J. Bonnick, Koji Suto, Timothy S. Arthur, Erika Nagai