Patents by Inventor Gwan Hyun CHOI

Gwan Hyun CHOI 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).

  • METHOD FOR PREPARING METAL-CARBON COMPOSITE, METAL-CARBON COMPOSITE PREPARED USING THE METHOD, AND CATALYST FOR ELECTROLYTIC REACTION INCLUDING THE COMPOSITE
    Publication number: 20230116855
    Abstract: Disclosed is a method for preparing a metal-carbon composite. The method includes synthesizing a planarized ligand compound via planarization-modification of a polyphenol-based ligand compound; synthesizing a metal-organic composite via hydrothermal synthesis of a mixed solution of the planarized ligand compound and metal ions; drying the metal-organic composite to prepare precursor powders; and carbonizing the precursor powders.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 13, 2023
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Pil Jin YOO, Gwan Hyun CHOI, Myeong Gyun NAM, Hyeon Jun SONG
  • Negative active material for rechargeable lithium battery, and rechargeable lithium battery including same
    Patent number: 11594722
    Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material including a composite including silicon particles, metal particles, and a first amorphous carbon; and a second amorphous carbon surrounding on the composite.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: February 28, 2023
    Assignees: SAMSUNG SDI CO., LTD., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Changsu Shin, Jaehou Nah, Myeong Gyun Nam, Pil Jin Yoo, Gwan Hyun Choi
  • NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
    Publication number: 20210151745
    Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material including a composite including silicon particles, metal particles, and a first amorphous carbon; and a second amorphous carbon surrounding on the composite.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 20, 2021
    Inventors: Changsu SHIN, Jaehou NAH, Myeong Gyun NAM, Pil Jin YOO, Gwan Hyun CHOI