Patents by Inventor A Reum YANG

A Reum YANG 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: 20250140914
    Abstract: One embodiment of the present invention provides a solid electrolyte which has an argyrodite crystal structure, and contains lithium, phosphorus, sulfur, element M, and a halogen element, wherein the element M is at least one selected from elements with an oxidation number of 1+ to 6+, and a substitution rate DS (%) of the element M represented by Relational Formula 1 is 0.1 to 1%.
    Type: Application
    Filed: August 30, 2024
    Publication date: May 1, 2025
    Inventors: Hayoung JUNG, Hyunsu JUNG, A Reum YANG
  • Publication number: 20250140913
    Abstract: One embodiment of the present invention provides a solid electrolyte which has an argyrodite crystal structure and contains lithium, phosphorus, sulfur, element M, oxygen, and halogen elements, wherein the element M is at least one selected from an element (M2) with an oxidation number of 2+ and an element (M6) with an oxidation number of 6+, a substitution rate DS1 (%) of the element M represented by Relational Formula 1 is 0.1 to 1%, and a substitution rate DS2 (%) of the oxygen represented by Relational Formula 2 is 0.15% to 2%.
    Type: Application
    Filed: August 30, 2024
    Publication date: May 1, 2025
    Inventors: A Reum YANG, Hyunsu JUNG, Hayoung JUNG, Sehun JUNG
  • Publication number: 20250099971
    Abstract: In a jet mill capable of removing static electricity according to the present disclosure, a raw material is fed into a hollow milling main body through a predetermined raw material supply pipe from a raw material supply unit, the raw materials are pulverized by collision with each other due to a strong jet air sprayed from an air nozzle installed in the milling main body when the raw materials fed into the above milling main body fill the milling main body to a certain height or higher, and upper and lower portions of the milling body are grounded to remove static electricity inside the milling main body.
    Type: Application
    Filed: July 15, 2024
    Publication date: March 27, 2025
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Jaechang SEOL, Woosin KWON, Hyunsu JUNG, A Reum YANG
  • Publication number: 20250099970
    Abstract: The present disclosure provides a jet mill system with improved pulverization efficiency including a compressor configured to compress gas introduced from the outside, a dehumidifier configured to remove moisture in the compressed gas from the compressor, a filter configured to filter foreign substances in the gas from which moisture has been removed from the dehumidifier, and a cooler configured to cool the gas filtered by the filter and supply the cooled gas into a milling main body of the jet mill.
    Type: Application
    Filed: July 10, 2024
    Publication date: March 27, 2025
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Jaechang SEOL, Woosin KWON, Hyunsu JUNG, A Reum YANG
  • Publication number: 20250087687
    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 which includes an overlithiated lithium manganese-based oxide including at least lithium, nickel, manganese and a doping metal, and in which the degradation in stability caused by excessive amounts of lithium and manganese in the lithium manganese-based oxide is mitigated and/or prevented by controlling the concentration of a transition metal in the lithium manganese-based oxide for each region, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
  • Patent number: 12199281
    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 which includes an overlithiated lithium manganese-based oxide including at least lithium, nickel, manganese and a doping metal, and in which the degradation in stability caused by excessive amounts of lithium and manganese in the lithium manganese-based oxide is mitigated and/or prevented by controlling the concentration of a transition metal in the lithium manganese-based oxide for each region, and a lithium secondary battery including the same.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: January 14, 2025
    Assignee: ECOPRO BM CO., LTD.
    Inventors: Ra Na Lim, A Reum Yang, Gyun Joong Kim, Kyung Min Lim, Hye Bin Kim
  • Publication number: 20240145771
    Abstract: Disclosed is a method for manufacturing a sulfide-based solid electrolyte, the method including: providing a sulfide-based compound; adding the sulfide-based compound to a silicone oil, followed by milling; and drying the milled sulfide-based compound.
    Type: Application
    Filed: September 12, 2023
    Publication date: May 2, 2024
    Applicant: ECOPRO BM CO., LTD.
    Inventors: A Reum YANG, Hyunsu JUNG, Mi Jin KIM, Hyeon Woo BAEK, Hayoung JUNG, Jaechang SEOL
  • Publication number: 20230387403
    Abstract: A positive electrode active material for a secondary battery according to an embodiment of the present invention comprises a lithium composite oxide represented by chemical formula 1 below and containing a layer-structured lithium excess oxide, wherein the lithium composite oxide comprises a secondary particle; the secondary particle comprises at least one primary particle; the primary particle comprises at least one crystallite; at least any one selected from the secondary particle, the primary particle, and the crystallite comprises a core and a shell occupying at least a portion of the surface of the core; and when the crystal structure belonging to space group C2/m is designated as [C2/m], the crystal structure belonging to space group R-3m is designated as [R-3m], and the ratio of the crystal structure belonging to space group C2/m versus the crystal structure belonging to space group R-3m is designated as [C2/m]/[R-3m], the [C2/m]/[R-3m] of the core differs from that of the shell in the secondary partic
    Type: Application
    Filed: December 2, 2021
    Publication date: November 30, 2023
    Inventors: Moon Ho CHOI, Seung Hyun CHOI, Ra Na LIM, A Reum YANG
  • Publication number: 20230369571
    Abstract: A cathode active material for a lithium secondary battery, according to an embodiment of the present invention, comprises a lithium composite oxide comprising a lithium-rich layered oxide, which is represented by the following chemical formula 1, wherein the lithium composite oxide comprises secondary particles, each of the secondary particles comprises one or more primary particles, each of the primary particles comprises one or more crystallites, at least any one selected from among the secondary particles, the primary particles and the crystallites comprises a core and a shell, which occupies a part of the surface of the core, and, when the mole of at least any one element selected from among nickel (Ni), cobalt (Co) and manganese (Mn) to the total mole of M1 and M2 in the following chemical formula 1 are NCM/M, the NCM/M of the shell and the core in the secondary particles are different from each other.
    Type: Application
    Filed: December 2, 2021
    Publication date: November 16, 2023
    Inventors: Moon Ho CHOI, Seung Hyun CHOI, Ra Na LIM, A Reum YANG
  • Publication number: 20230369566
    Abstract: A positive electrode active material for a secondary battery according to an embodiment of the present invention comprises a lithium composite oxide represented by chemical formula 1 and containing a layer-structured lithium excess oxide, wherein the lithium composite oxide comprises a secondary particle; the secondary particle comprises at least one primary particle; the primary particle comprises at least one crystallite; at least one selected from the secondary particle, the primary particle, and the crystallite comprises a core and a shell occupying at least a portion of the surface of the core; and when the number of moles of at least one element having an oxidation number, selected from among nickel (Ni), cobalt (Co) and manganese (Mn) relative to the total number of moles of M1 and M2 in chemical formula 1 is Mp+/M, the Mp+/M in the core differs from that in the shell in the secondary particle: [Chemical formula 1] rLi2M1O3(1-r) LiaM2O2.
    Type: Application
    Filed: December 2, 2021
    Publication date: November 16, 2023
    Inventors: Moon Ho CHOI, Seung Hyun CHOI, Ra Na LIM, A Reum YANG
  • Publication number: 20230268497
    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, which includes an overlithiated lithium manganese-based oxide, which is a solid solution with a phase belonging to a C2/m space group and a phase belonging to an R3-m space group and in which stability degradation caused by excessive amounts of lithium and manganese in the lithium manganese-based oxide is mitigated and/or prevented because there are regions with different proportions of the phase belonging to the C2/m space group and the phase belonging to the R3-m space group in the lithium manganese-based oxide, and a lithium secondary battery including the same.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
  • Publication number: 20230261179
    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 which includes an overlithiated lithium manganese-based oxide including at least lithium, nickel, manganese and a doping metal, and in which the degradation in stability caused by excessive amounts of lithium and manganese in the lithium manganese-based oxide is mitigated and/or prevented by controlling the concentration of a transition metal in the lithium manganese-based oxide for each region, and a lithium secondary battery including the same.
    Type: Application
    Filed: March 23, 2023
    Publication date: August 17, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
  • Publication number: 20230231128
    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 which includes a lithium-rich lithium manganese-based oxide containing at least lithium, nickel, manganese and molybdenum, wherein the lithium manganese-based oxide includes at least one primary particle and a molybdenum-containing flux is used to improve the crystal growth of the primary particle, resulting in mitigation and/or prevention of a decrease in stability caused by lithium and manganese present in excessive amounts in the lithium manganese-based oxide, and a lithium secondary battery including the same.
    Type: Application
    Filed: March 22, 2023
    Publication date: July 20, 2023
    Applicant: ECOPRO BM CO., LTD.
    Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
  • Publication number: 20220411282
    Abstract: The present invention relates to a positive electrode active material comprising an overlithiated layered oxide (OLO) and, more specifically, to a positive electrode active material comprising: an OLO represented by chemical formula 1 below; and an amorphous free oxide coating layer of an amorphous free oxide on the surface of the OLO represented by chemical formula 1. [Chemical formula 1] Li2MnO3.(1-r)LiaNixCoyMnzM11-(x+y+z)O2 (wherein, in chemical formula 1, 0<r?0.6, 0<a?1, 0?x?1, 0?y<1, 0?z<1, and 0<x+y+z?1, and M1 is at least any one selected from Na, K, Mg, Al, Fe, Cr, Y, Sn, Ti, B, P, Zr, Ru, Nb, W, Ba, Sr, La, Ga, Mg, Gd, Sm, Ca, Ce, Fe, Al, Ta, Mo, Sc, V, Zn, Cu, In, S, B, Ge, Si, and Bi).
    Type: Application
    Filed: October 19, 2020
    Publication date: December 29, 2022
    Inventors: Moon Ho CHOI, Gyeong Jae HEO, Seung Hyun CHOI, A Reum YANG, Ju Kyoung KANG
  • Publication number: 20210119208
    Abstract: The present disclosure is related to a positive electrode active material for lithium secondary batteries, a method for preparing the positive electrode active material, and a lithium secondary battery including the positive electrode active material. The positive electrode active material for lithium secondary batteries includes an overlithiated layered oxide (OLO), and the overlithiated layered oxide includes primary particles having a size in a range of 300 nm to 10 ?m in an amount ranging from 50 to 100% by volume with respect to the total overlithiated layered oxide.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 22, 2021
    Inventors: Moon Ho CHOI, Gyeong Jae HEO, Seung Hyun CHOI, A Reum YANG, Ju Kyoung KANG