Patents by Inventor Donghan Youn

Donghan Youn 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).

  • Lithium-doped silicon-based oxide negative electrode active material, method of preparing the same, and negative electrode and secondary battery including the same
    Patent number: 11958750
    Abstract: Provided are a negative electrode active material which includes negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material particles have a maximum peak position by a Raman spectrum of more than 460 cm?1 and less than 500 cm?1. Also provided are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 16, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Jeongbae Yoon, Suk Chin Lee, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Lithium-doped silicon-based oxide negative electrode active material, method of preparing the same, and negative electrode and secondary battery including the same
    Patent number: 11923540
    Abstract: Provided are a negative electrode active material which includes a negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less. Also provided are a negative electrode and a lithium secondary battery including the same.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: March 5, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Lithium-Doped Silicon-Based Oxide Negative Electrode Active Material, Method of Preparing the Same, and Negative Electrode and Secondary Battery Including the Same
    Publication number: 20220037656
    Abstract: Provided are a negative electrode active material which includes a negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less. Also provided are a negative electrode and a lithium secondary battery including the same.
    Type: Application
    Filed: July 23, 2021
    Publication date: February 3, 2022
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Lithium-Doped Silicon-Based Oxide Negative Electrode Active Material, Method of Preparing the Same, and Negative Electrode and Secondary Battery Including the Same
    Publication number: 20220037644
    Abstract: Provided are a negative electrode active material which includes negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. A signal generated in a region of 200 to 600 cm?1 according to a Raman spectrum is subjected to deconvolution into three peaks, which are set to peak A, peak B, and peak C from lowest to highest of an absolute value of a wavenumber. Also disclosed are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Application
    Filed: July 23, 2021
    Publication date: February 3, 2022
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Jeongbae Yoon, Suk Chin Lee, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Lithium-Doped Silicon-Based Oxide Negative Electrode Active Material, Method of Preparing the Same, and Negative Electrode and Secondary Battery Including the Same
    Publication number: 20210363020
    Abstract: Provided are a negative electrode active material which includes negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material particles have a maximum peak position by a Raman spectrum of more than 460 cm?1 and less than 500 cm?1. Also provided are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 25, 2021
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Jeongbae Yoon, Suk Chin Lee, Hansu Kim, Donghan Youn, Dong Jae Chung