Patents by Inventor Ji Young Ma

Ji Young Ma 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).

  • Composite anode active material, method of preparing the same, and lithium secondary battery including anode including composite anode active material
    Patent number: 11901540
    Abstract: Provided herein is a composite anode active material including: a porous carbon structure; a first coating layer on the porous carbon structure and including a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second coating layer on the first coating layer and including a carbonaceous material.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 13, 2024
    Assignee: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jae Phil Cho, Yeong Uk Son, Ji Young Ma, Nam Hyung Kim
  • NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING SAME, AND LITHIUM SECONDARY BATTERY HAVING NEGATIVE ELECTRODE INCLUDING SAME
    Publication number: 20210328219
    Abstract: The present disclosure relates to a negative electrode active material to a lithium secondary battery, including: a carbon-based material; a silicon coating layer disposed on the carbon-based material: and a carbon coating layer disposed on the silicon coating layer, wherein the silicon coating layer includes silicon particles and a silicon-based amorphous matrix.
    Type: Application
    Filed: August 13, 2019
    Publication date: October 21, 2021
    Applicant: SJ ADVANCED MATERIALS CO., LTD.
    Inventors: Jae Phil Cho, Jae Kyung Sung, Ji Young Ma
  • COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING ANODE INCLUDING COMPOSITE ANODE ACTIVE MATERIAL
    Publication number: 20210202944
    Abstract: Provided herein is a composite anode active material including: a porous carbon structure; a first coating layer on the porous carbon structure and including a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second coating layer on the first coating layer and including a carbonaceous material.
    Type: Application
    Filed: March 17, 2021
    Publication date: July 1, 2021
    Applicant: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jae Phil Cho, Yeong Uk Son, Ji Young Ma, Nam Hyung Kim
  • Composite anode active material, method of preparing the same, and lithium secondary battery including anode including composite anode active material
    Patent number: 10985370
    Abstract: Provided herein is a composite anode active material including: a porous carbon structure; a first coating layer on the porous carbon structure and including a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second coating layer on the first coating layer and including a carbonaceous material.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: April 20, 2021
    Assignee: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jae Phil Cho, Yeong Uk Son, Ji Young Ma, Nam Hyung Kim
  • Anode active material for lithium secondary battery, preparation method therefor, and lithium secondary battery containing same
    Patent number: 10340518
    Abstract: An anode active material for a lithium secondary battery, a preparation method thereof, and a lithium secondary battery including the anode active material are provided. The anode active material includes carbon particles having a spherical shape, a first carbon coating layer present on surfaces of the carbon particles, a silicon coating layer present on the first carbon coating layer and including silicon nanoparticles, and a second carbon coating layer present on the silicon coating layer.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: July 2, 2019
    Assignee: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jaephil Cho, Min Seong Ko, Su Jong Chae, Ji Young Ma, Nam Hyung Kim
  • COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING ANODE INCLUDING COMPOSITE ANODE ACTIVE MATERIAL
    Publication number: 20190036121
    Abstract: Provided herein is a composite anode active material including: a porous carbon structure; a first coating layer on the porous carbon structure and including a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second coating layer on the first coating layer and including a carbonaceous material.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 31, 2019
    Applicant: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jae Phil Cho, Yeong Uk Son, Ji Young Ma, Nam Hyung Kim
  • ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY CONTAINING SAME
    Publication number: 20180337400
    Abstract: An anode active material for a lithium secondary battery, a preparation method thereof, and a lithium secondary battery including the anode active material are provided. The anode active material includes carbon particles having a spherical shape, a first carbon coating layer present on surfaces of the carbon particles, a silicon coating layer present on the first carbon coating layer and including silicon nanoparticles, and a second carbon coating layer present on the silicon coating layer.
    Type: Application
    Filed: June 15, 2016
    Publication date: November 22, 2018
    Applicant: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Jaephil Cho, Min Seong Ko, Su Jong Chae, Ji Young Ma, Nam Hyung Kim