Patents by Inventor Min Su JO

Min Su JO 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: 20250140827
    Abstract: One embodiment of the present invention provides a positive electrode active material for a sodium secondary battery, including P2-type layered oxide particles and O3-type layered oxide particles, wherein in SEM-EDS mapping analysis, an atomic ratio (S3/S2) of a surface Na content (at %) (S3) of the O3-type layered oxide particles to a surface Na content (at %) (S2) of the P2-type layered oxide particles is 0.4 to 1.6.
    Type: Application
    Filed: August 30, 2024
    Publication date: May 1, 2025
    Inventors: A Ram PARK, Dongwook LEE, Kuhyun JUNG, Jun Won SUH, Min Su JO
  • Publication number: 20250136467
    Abstract: Provided is a method of preparing a positive electrode active material for a sodium secondary battery, including: a) inputting a sodium composite transition metal oxide and a water washing solution into a reactor and stirring the reactants to dissolve residual sodium on the surface of the sodium composite transition metal oxide in the water washing solution; b) inputting cobalt salt into the reactor and performing stirring to co-precipitate cobalt hydroxide onto the sodium composite transition metal oxide particles; and c) heat-treating the sodium composite transition metal oxide particles on which the cobalt hydroxide is formed to form a cobalt coating layer on the particles.
    Type: Application
    Filed: August 30, 2024
    Publication date: May 1, 2025
    Inventors: Kuhyun JUNG, Dongwook LEE, Bo Hyun KONG, Min Su JO, A Ram PARK, Yong Hwan GWON
  • Publication number: 20250140839
    Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material capable of maintaining the electrochemical properties of a lithium secondary battery using a lithium composite oxide as a positive electrode active material while preventing and/or mitigating gas generation and swelling due to the positive electrode active material in a lithium secondary battery by suppressing the excessive growth of primary particles and improving the crystallinity of primary particles, and a lithium secondary battery including the same.
    Type: Application
    Filed: October 22, 2024
    Publication date: May 1, 2025
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Sun Hwa KIM, Jae Kyun LEE, Seung Woo HEO, Sung Yoon PARK, Sung Un HONG, Yu Jin NAM, Hwan Wook KWAK, Min Su JO, Young Hoe SEON, O Hyeon KWON, Jae Bin CHUNG, Hyun Jong YU
  • Publication number: 20250091954
    Abstract: The present invention relates to a sagger for firing a precursor material, and more specifically, to a sagger having a space internally provided to load a precursor material. When used to fire a precursor material, the sagger is capable of not only suppressing the generation of by-products but also enhancing the durability of the main body.
    Type: Application
    Filed: December 5, 2024
    Publication date: March 20, 2025
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Hee Youb SONG, Bo Hyun KONG, Su Jin KIM, Hwan Wook KWAK, Min Su JO, Yu Jin NAM, Moon Ho CHOI, In Ho YOON, Seung Ho LEE, Young Woo BYOUN, Soo Bong KIM, Jae Yoon JEONG, Seok Min LEE
  • Publication number: 20230411605
    Abstract: The present invention relates to a positive electrode active material, and a lithium secondary battery using a positive electrode including the same. More particularly, the present invention relates to a positive electrode active material that has increased efficiency in the diffusion of lithium ions and/or charges and increased structural stability by locally forming regions with different concentrations of an arbitrary transition metal in a primary particle, and a lithium secondary battery using a positive electrode including the same.
    Type: Application
    Filed: April 20, 2023
    Publication date: December 21, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Min Su JO, Moon Ho CHOI, Jun Won SUH, Bo Hyun KONG
  • Publication number: 20230121699
    Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery which can simultaneously improve electrochemical properties and stability, which are in a mutual trade-off relationship, by introducing a step structure to a surface part of a lithium composite oxide constituting the positive electrode active material, and a lithium secondary battery including the same.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 20, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Bo Hyun KONG, Moon Ho CHOI, Hyun Jong YU, Kyung Gu KIM, Su Jin KIM, Min Su JO, Yeon Hee KIM, Jong Seung SHIN, Jin Kyeong YUN, Hwan Wook KWAK