Patents by Inventor Gwang Seok CHOE

Gwang Seok CHOE 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).

  • Publication number: 20240186506
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.
    Type: Application
    Filed: February 14, 2024
    Publication date: June 6, 2024
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Ye Ri JANG, Joong Ho BAE
  • Patent number: 11942635
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: March 26, 2024
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Mi Hye Yun, Seung Woo Choi, Gwang Seok Choe, Ye Ri Jang, Joong Ho Bae
  • Publication number: 20240038988
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle. a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 1, 2024
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Seung Woo CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Gwang Seok CHOE, Joong Ho BAE, Du Yeol KIM
  • Patent number: 11837725
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: December 5, 2023
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Seung Woo Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Gwang Seok Choe, Joong Ho Bae, Du Yeol Kim
  • Patent number: 11588154
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: February 21, 2023
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Moon Ho Choi, Seung Woo Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Gwang Seok Choe, Joong Ho Bae, Du Yeol Kim
  • Publication number: 20210399297
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material that includes a first lithium composite oxide which is a small particle and a second lithium composite oxide which is a large particle, which have different average particle diameters, thereby improving an increasing deviation of an average particle diameter and degraded impedance and lifetime characteristics due to excessive calcination for any one of the small and large particles during simultaneous calcination, a positive electrode including the same, and a lithium secondary battery using the same.
    Type: Application
    Filed: April 7, 2021
    Publication date: December 23, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Gwang Seok CHOE, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Seung Woo CHOI, Joong Ho BAE, Du yeol KIM
  • Publication number: 20210167380
    Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.
    Type: Application
    Filed: November 11, 2020
    Publication date: June 3, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Seung Woo CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Gwang Seok CHOE, Joong Ho BAE, Du Yeol KIM
  • Publication number: 20210135212
    Abstract: The present invention relates to a lithium composite oxide capable of improving capacity and lifetime characteristics of a lithium secondary battery and a lithium secondary battery including the same. According to the present invention, since the atomic ratio of boron (B) and nickel (Ni) in the surface region of the lithium composite oxide including primary particles enabling lithium intercalation and deintercalation and secondary particles formed by aggregating the primary particles is in a specific range, the stability of the lithium composite oxide may be improved, and thus it is possible to improve the capacity and lifetime characteristics of the lithium secondary battery using the lithium composite oxide as a positive electrode active material.
    Type: Application
    Filed: September 29, 2020
    Publication date: May 6, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Ye Ri JANG, Joong Ho BAE
  • Publication number: 20210119205
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 22, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Ye Ri JANG, Joong Ho BAE
  • Publication number: 20210111396
    Abstract: The present invention relates to a lithium composite oxide including a coating layer having a boron-containing oxide and a lithium secondary battery including the same. More particularly, the present invention relates to a lithium composite oxide improved in lifetime and capacity characteristics by inducing a predetermined correlation between the molar ratio of nickel in a lithium composite oxide including a coating layer having a boron-containing oxide and a full width at half-maximum (FWHM; deg., 2?) of a (104) peak among XRD peaks defined by the hexagonal lattice with an R-3m space group, and a lithium secondary battery including the same.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 15, 2021
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Joong Ho BAE, Jin-Oh SON