Patents by Inventor Min-sang Song

Min-sang Song 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: 20250246674
    Abstract: Disclosed is a solid electrolyte for a solid-state battery, preferably an all-solid-state battery, which may be protected from moisture by chemically reacting a material such as an amphiphilic compound, e.g., a surfactant with a sulfide-containing solid electrolyte, as well as a -solid-state battery comprising the solid electrolyte. The solid electrolyte for the all-solid-state battery is surface-modified with an amphiphilic compound having a hydrophilic group and a hydrophobic group.
    Type: Application
    Filed: January 31, 2024
    Publication date: July 31, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeong Woo OH, Min-Sang SONG, Junghwa HONG, Ping LIU, Mengchen LIU
  • Publication number: 20250210690
    Abstract: Disclosed is a solid electrolyte membrane, a method for manufacturing the same, and an all-solid-state battery including the same. More specifically, the solid electrolyte membrane includes a first solid electrolyte layer including a first solid electrolyte and a first fibrous binder and a second solid electrolyte layer including a second solid electrolyte and a second fibrous binder, stacked adjacent to each other, wherein the weight of the first fibrous binder relative to the total weight of the first solid electrolyte layer is less than the weight of the second fibrous binder relative to the total weight of the second solid electrolyte layer. Since the weight of a first fibrous binder included in the first solid electrolyte layer is less than the weight of the second fibrous binder included in the second solid electrolyte layer, the strength may be improved without lowering the ionic conductivity of the solid electrolyte membrane.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 26, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jung-Pil LEE, Min-Sang SONG, Jiyoung KIM, Dong Ju LEE, Zheng CHEN
  • Publication number: 20250210693
    Abstract: Disclosed is a solid electrolyte membrane, a method for manufacturing the same, and an all-solid-state battery containing the same. More specifically, the solid electrolyte membrane includes a first solid electrolyte layer and a second solid electrolyte layer stacked adjacent to each other, and the first solid electrolyte layer has a structure in which particulate binders are dispersed, and the second solid electrolyte layer has a structure in which fibrous binders are entangled or connected to each other, and thus the strength may be improved without lowering the ionic conductivity of the solid electrolyte membrane. The solid electrolyte membrane may be substantially free of solvent.
    Type: Application
    Filed: November 13, 2024
    Publication date: June 26, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jung-Pil LEE, Min-Sang SONG, Jiyoung KIM, Dong Ju LEE, Zheng CHEN
  • Publication number: 20250210663
    Abstract: A binder for an all-solid-state battery includes a first polymer in which a chain comprising a first hydrogen-bonding functional group is grafted with a side chain on the main chain of a conjugated diene-based polymer and a second polymer in which a chain comprising a second hydrogen-bonding functional group is grafted with a side chain on the main chain of a conjugated diene-based polymer, wherein the first hydrogen-bonding functional group of the first polymer and the second hydrogen-bonding functional group of the second polymer form hydrogen bonds with each other. A positive electrode for an all-solid-state battery including the binder for an all-solid-state battery, a conductive material, a positive electrode active material and a solid electrolyte, and an all-solid-state battery including the positive electrode are also described.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 26, 2025
    Inventors: Donghyeon Kim, Yoon Seok Jung, Youngbok Kim, Min Sang Song, Kyu Tae Kim, Tae Young Kwon, Young Joon Park
  • Publication number: 20250201914
    Abstract: Disclosed is a negative electrode for an all-solid-state battery and an all-solid-state battery including the negative electrode. More specifically, disclosed is a pre-lithiated silicon negative electrode, and an all-solid-state battery comprising the same.
    Type: Application
    Filed: February 28, 2025
    Publication date: June 19, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeongbeom LEE, Min Sang SONG, Ying Shirley MENG, So-Yeon HAM
  • Publication number: 20250140893
    Abstract: A battery cell pressing system may include a sealed case having an internal chamber, the sealed case including at least one window to allow visual inspection of the internal chamber; a pouch-type battery cell disposed within the internal chamber of the sealed case; a fluid filling the internal chamber and surrounding the pouch-type battery cell; a fluid entrance in fluid communication with the internal chamber; a pressing member configured to adjust a pressure of the fluid within the internal chamber such that the pressure at which the fluid presses the pouch-type battery cell is approximately 1 MPa to 10 MPa; a heater configured to heat the fluid within the internal chamber; and a pressure measuring member configured to measure the pressure within the internal chamber. The fluid isotropically presses the pouch-type battery cell during at least one of charging and discharging of the pouch-type battery cell.
    Type: Application
    Filed: October 29, 2024
    Publication date: May 1, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeongbeom LEE, Min-Sang SONG, Yu-Ting CHEN, Ying Shirley MENG
  • Publication number: 20250140894
    Abstract: A method of controlling a cycling pressure of a secondary battery can include assembling the secondary battery by stacking a cathode, a separator, and an anode in order; activating the secondary battery by applying a pressure of about 5 MPa or less; and cycling the secondary battery by applying the pressure of about 5 MPa or less.
    Type: Application
    Filed: October 29, 2024
    Publication date: May 1, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeongbeom LEE, Min-Sang SONG, Yu-Ting CHEN, Ying Shirley MENG
  • Patent number: 12283662
    Abstract: Disclosed is a negative electrode for an all-solid-state battery and an all-solid-state battery including the negative electrode. More specifically, disclosed is a pre-lithiated silicon negative electrode, and an all-solid-state battery comprising the same.
    Type: Grant
    Filed: September 20, 2023
    Date of Patent: April 22, 2025
    Assignees: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeongbeom Lee, Min Sang Song, Ying Shirley Meng, So-Yeon Ham
  • Publication number: 20250125410
    Abstract: Disclosed is a sulfide-containing solid electrolyte material with an organic coating, as well as densified pellets containing this solid electrolyte material, a solid electrolyte thereof, and a solid state battery containing the solid electrolyte. According to aspects of the disclosure, the coating comprising a compound of Chemical Formula (1) or Chemical Formula (2) is formed on the surface of a sulfide-containing solid electrolyte material, e.g., the organic coating may comprise a compound having a thiol with a long hydrophobic tail, such as 1-undecanethiol. The coating provides densification of sulfide-containing solid electrolyte materials, and facilitates the ionic and lithium atomic diffusion coefficient at sulfide grain boundaries during pressing, thus achieving the densification of sulfide solid state electrolyte.
    Type: Application
    Filed: September 19, 2024
    Publication date: April 17, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ping LIU, Junghwa HONG, Mengchen LIU, Ke ZHOU, Jeong Woo OH, Min-Sang SONG
  • Publication number: 20250062394
    Abstract: Methods for preparing a solid electrolyte membrane are described. More particularly, a small amount of binder may be fiberized through a dry calendering process to prepare a solid electrolyte membrane. Since the fiberized binder is included in an entangled state within the solid electrolyte membrane, it shows excellent characteristics in both ionic conductivity and strength.
    Type: Application
    Filed: August 15, 2023
    Publication date: February 20, 2025
    Applicants: LG ENERGY SOLUTION, LTD., The Regents of the University of California
    Inventors: Jung Pil LEE, Min Sang SONG, Zheng CHEN, Dong Ju LEE
  • Publication number: 20250062360
    Abstract: A binder includes composite particles with a polytetrafluoroethylene structure coated with an acrylic polymer. The binder can be for a lithium secondary battery according to one embodiment of the present invention, and not only can solve problems such as agglomeration that can occur when handling conventional binders, but also has excellent physical properties such as low thickness deviation and high tensile strength when manufacturing electrodes. In addition, a battery with these electrodes has improved performance, such as improved capacity retention rate.
    Type: Application
    Filed: August 21, 2023
    Publication date: February 20, 2025
    Inventors: Taegon Kim, Myeongsoo Kim, Seong Jang Jeon, Da Hyun Kang, Sung Il Park, Bubsung Kim, Choonghyeon Lee, Min Sang Song
  • Publication number: 20250055024
    Abstract: Disclosed is a negative electrode for an all-solid-state battery and an all-solid-state battery including the negative electrode. More specifically, disclosed is a pre-lithiated silicon negative electrode, and an all-solid-state battery comprising the same.
    Type: Application
    Filed: September 20, 2023
    Publication date: February 13, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jeongbeom LEE, Min Sang SONG, Ying Shirley MENG, So-Yeon HAM
  • Publication number: 20250055023
    Abstract: Methods for recovering the performance of a halide-based solid electrolyte are described. In one aspect, a halide-based solid electrolyte that has been exposed to air is subjected to a heat-treatment process, where the performance of the halide-based solid electrolyte is recovered, e.g., the ionic conductivity obtained after heat treatment is recovered to a level similar to that before air exposure.
    Type: Application
    Filed: September 5, 2023
    Publication date: February 13, 2025
    Applicants: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jung Pil LEE, Jeongbeom LEE, Min Sang SONG, Ying Shirley MENG, Zheng CHEN, Yu-Ting CHEN
  • Patent number: 12176482
    Abstract: Disclosed is a solid electrolyte membrane, a method for manufacturing the same, and an all-solid-state battery containing the same. More specifically, the solid electrolyte membrane includes a first solid electrolyte layer and a second solid electrolyte layer stacked adjacent to each other, and the first solid electrolyte layer has a structure in which particulate binders are dispersed, and the second solid electrolyte layer has a structure in which fibrous binders are entangled or connected to each other, and thus the strength may be improved without lowering the ionic conductivity of the solid electrolyte membrane. The solid electrolyte membrane may be substantially free of solvent.
    Type: Grant
    Filed: December 20, 2023
    Date of Patent: December 24, 2024
    Assignees: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Jung-Pil Lee, Min-Sang Song, Jiyoung Kim, Dong Ju Lee, Zheng Chen
  • Patent number: 12148880
    Abstract: Solid electrolyte compositions and solid-state batteries are disclosed, which comprise a solid electrolyte layer including a sulfide-containing solid-state electrolyte material and a compound of Chemical Formula 1. The sulfide-containing solid-state electrolyte material includes but is not limited to Li6PS5Cl (“LPSC”), an LPS-based glass or glass ceramic of formula xLi2S·yP2S5, wherein x+y=1, or an argyrodite-based sulfide-based solid electrolyte or formula Li6PS5X, wherein X=Cl, Br, or I) or Li6?yPS5?yCl1+y, where y is <1. In some aspects, the compound of Chemical Formula 1 is sodium 3-mercapto-1-propanesulfonate (3M1P).
    Type: Grant
    Filed: April 30, 2024
    Date of Patent: November 19, 2024
    Assignees: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ping Liu, Ke Zhou, Mengchen Liu, Jeong Woo Oh, Min-Sang Song
  • Patent number: 12125974
    Abstract: Disclosed is a sulfide-containing solid electrolyte material with an organic coating, as well as densified pellets containing this solid electrolyte material, a solid electrolyte thereof, and a solid state battery containing the solid electrolyte. According to aspects of the disclosure, the coating comprising a compound of Chemical Formula (1) or Chemical Formula (2) is formed on the surface of a sulfide-containing solid electrolyte material, e.g., the organic coating may comprise a compound having a thiol with a long hydrophobic tail, such as 1-undecanethiol. The coating provides densification of sulfide-containing solid electrolyte materials, and facilitates the ionic and lithium atomic diffusion coefficient at sulfide grain boundaries during pressing, thus achieving the densification of sulfide solid state electrolyte.
    Type: Grant
    Filed: October 12, 2023
    Date of Patent: October 22, 2024
    Assignees: LG ENERGY SOLUTION, LTD., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ping Liu, Junghwa Hong, Mengchen Liu, Ke Zhou, Jeong Woo Oh, Min-Sang Song
  • Publication number: 20240288390
    Abstract: A method for analyzing a structure of a solid electrolyte film, including a step of: immersing the solid electrolyte film including a solid electrolyte and a binder into a polar solvent to remove the solid electrolyte from the solid electrolyte film; and analyzing a structure of the solid electrolyte film in which the solid electrolyte is removed.
    Type: Application
    Filed: February 22, 2024
    Publication date: August 29, 2024
    Inventors: Jung Pil LEE, Min Sang SONG, Dong Ju LEE, Zheng CHEN
  • Publication number: 20240258562
    Abstract: The present disclosure relates to a solid electrolyte film, its fabrication method, and an all-solid-state battery including the same. More specifically, the solid electrolyte film comprises a slurry including a sulfide and/or halide-based solid electrolyte, a binder, and a solvent, coated on a substrate and then dried and pressed. By pressing at a temperature equal to or above a glass transition temperature (Tg) of the binder, the packing density of the solid electrolyte film is increased, thereby improving the ionic conductivity.
    Type: Application
    Filed: January 24, 2024
    Publication date: August 1, 2024
    Inventors: Jung Pil LEE, Min Sang Song, Dong Ju Lee, Zheng Chen
  • Publication number: 20240213522
    Abstract: A solid electrolyte film and an all-solid-state battery including the same, wherein the solid electrolyte film is fabricated by a dry process of physically mixing sulfide-based and/or halide-based solid electrolyte particles with a binder, wherein the binder is fiberized in the dry process and forms fiberized binders in an intertwined state, so that a small amount of binder is sufficient to provide improved ionic conductivity and strength.
    Type: Application
    Filed: December 22, 2023
    Publication date: June 27, 2024
    Inventors: Jung Pil LEE, Min Sang SONG, Dong Ju LEE, Zheng CHEN
  • Patent number: 10305100
    Abstract: A composite cathode active material including an overlithiated metal oxide having a layered structure, a material having an olivine structure, and one or more of: an inorganic material, and nitrogen atoms doped in the material having an olivine structure. The inorganic material includes a nitride or carbide of a non-transition metal. The composite cathode active material may be included in a cathode, and the cathode may be included in a lithium battery.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 28, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: So-yeon Kim, Kyu-sung Park, Young-min Choi, Won-chang Choi, Min-sang Song, Gue-sung Kim, Ryoung-hee Kim