Patents by Inventor Sa-Heum Kim

Sa-Heum Kim 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: 20210280904
    Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd ??[Formula 1] wherein 6?a?7, 3<b<6, 0<c?1, 0<d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
    Type: Application
    Filed: May 14, 2021
    Publication date: September 9, 2021
    Inventors: Ju Yeong Seong, Yong Jun Jang, Hong Seok Min, Sa Heum Kim, Yong Sub Yoon, Pil Gun Oh, Dong Wook Shin, Chan Hwi Park, Jin Oh Son
  • Patent number: 11114690
    Abstract: Disclosed are a method of manufacturing a solid electrolyte, a solid electrolyte manufactured using the method, and an all-solid cell including the solid electrolyte. The method includes preparing an electrolyte admixture including a solid electrolyte precursor and a solvent, drying the electrolyte admixture and removing the solvent from the electrolyte admixture to form a dry electrolyte mixture, and heat-treating the dry electrolyte mixture to form a crystallized solid electrolyte.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: September 7, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Jun Jang, Pil Gun Oh, Hong Seok Min, Yong Sub Yoon, Sa Heum Kim, Ju Yeong Seong
  • Publication number: 20210273257
    Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd??[Formula 1] wherein 6?a?7, 3<b<6, 0<c?1, 0<d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
    Type: Application
    Filed: May 14, 2021
    Publication date: September 2, 2021
    Inventors: Ju Yeong Seong, Yong Jun Jang, Hong Seok Min, Sa Heum Kim, Yong Sub Yoon, Pil Gun Oh, Dong Wook Shin, Chan Hwi Park, Jin Oh Son
  • Publication number: 20210273258
    Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd??[Formula 1] wherein 6?a?7, 3?b?6, 0?c?1, 0?d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
    Type: Application
    Filed: May 14, 2021
    Publication date: September 2, 2021
    Inventors: Ju Yeong Seong, Yong Jun Jang, Hong Seok Min, Sa Heum Kim, Yong Sub Yoon, Pil Gun Oh, Dong Wook Shin, Chan Hwi Park, Jin Oh Son
  • Publication number: 20210184211
    Abstract: Provided are, inter alia, a positive electrode material for a lithium secondary battery having a high energy density with only a single positive electrode material, and a lithium secondary battery including the same. The positive electrode material for a lithium secondary battery includes a positive electrode active material formed of a Li—[Mn—Ti]—O-based material so that lithium is reversibly intercalated and deintercalated, and particularly, the positive electrode active material is doped with a dopant (Me) having an oxidation number of 2 to 6.
    Type: Application
    Filed: May 26, 2020
    Publication date: June 17, 2021
    Inventors: Seung Min Oh, Sang Mok Park, Ik Kyu Kim, Yeol Mae Yeo, Yoon Sung Lee, Dong Jun Kim, Sa Heum Kim, Ji Eun Lee, Seung Taek Myung, Ji Ung Choi
  • Patent number: 11024880
    Abstract: Disclose are an electrolyte composite for a lithium secondary battery having an improved output; a cathode including a protective film on its surface; and a lithium secondary battery comprising the same.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: June 1, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yoon Sung Lee, KiSeok Koh, Jung Young Cho, Ikkyu Kim, Yeolmae Yeo, Seung-Min Oh, Sa Heum Kim, Sungmin Choi
  • Patent number: 11011777
    Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd??[Formula 1] wherein 6?a?7, 3<b<6, 0<c?1, 0<d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 18, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Ju Yeong Seong, Yong Jun Jang, Hong Seok Min, Sa Heum Kim, Yong Sub Yoon, Pil Gun Oh, Dong Wook Shin, Chan Hwi Park, Jin Oh Son
  • Publication number: 20210083322
    Abstract: A method of manufacturing a cathode for an all-solid-state battery includes: stacking a protective member on a cathode current collector, the protective member including a protective layer and a mask layer disposed on the protective layer and having a central portion which is an empty space; coating the protective member with a cathode material so that the central portion of the protective member is filled with the cathode material; and removing the mask layer to form a cathode coating layer.
    Type: Application
    Filed: September 2, 2020
    Publication date: March 18, 2021
    Inventors: Yong Gu Kim, Yun Sung Kim, Ji Na Kim, Sa Heum Kim, Hong Seok Min
  • Patent number: 10938026
    Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: March 2, 2021
    Assignees: Hyundai Motor Company, Research & Business Foundation Sungkyunkwan University, Kia Motors Corporation
    Inventors: Kyo Min Shin, Sa Heum Kim, Hong Seok Min, Mihai Robert Zamfir, Je Mee Joe, Didier Pribat, Yeo Jin Lee
  • Publication number: 20210043963
    Abstract: The present disclosure relates to a method of manufacturing a sulfide solid electrolyte and a sulfide solid electrolyte manufactured thereby, and more particularly to a method of manufacturing a sulfide solid electrolyte and a sulfide solid electrolyte manufactured thereby, in which the sulfide solid electrolyte includes two or more sulfide compounds, thus improving the atmospheric stability of the solid electrolyte and reducing the generation of toxic gas.
    Type: Application
    Filed: May 20, 2020
    Publication date: February 11, 2021
    Inventors: In Woo Song, Hong Seok Min, Yong Jun Jang, Sa Heum Kim, So Young Yoon, Yung Sup Youn, Kyung Ho Kim, Sang Wook Han, Se Man Kwon
  • Patent number: 10903518
    Abstract: Disclosed is a method of preparing a sulfide-based solid electrolyte for an all-solid battery having an argyrodite-type crystal structure through a solution process. The method including obtaining a precursor solution by dissolving lithium sulfide, phosphorus sulfide and a halogen compound in a solvent, obtaining a precursor powder by removing the solvent from the precursor solution. Solid electrolyte for an all-solid battery can be produced by such method.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 26, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Jun Jang, Pil Gun Oh, Hong Seok Min, Yong Sub Yoon, Sa Heum Kim, Ju Yeong Seong
  • Patent number: 10734632
    Abstract: A pouch type secondary battery may include an electrode assembly, electrode tabs connected to the electrode assembly, a pouch case to accommodate the electrode assembly and the electrode tabs in a sealed state, and lead tabs extending to the outside by passing through the pouch case in a state of being connected to the electrode tabs, wherein the lead tabs include a bending connection portion provided in the pouch case, and a breaking portion provided on a side of the bending connection portion to have a relatively small cross-sectional area and being broken when an overcurrent is applied or the pouch case expands.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: August 4, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seung Ho Ahn, Sungmin Choi, Sa Heum Kim
  • Publication number: 20200194838
    Abstract: A lithium secondary battery may include a cathode, an anode, a separator disposed between the cathode and anode and an electrolyte, wherein the anode includes a silicon-based material, and wherein the electrolyte comprises 1 to 10 wt % of LiDFOB based on the total weight of the electrolyte.
    Type: Application
    Filed: May 17, 2019
    Publication date: June 18, 2020
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yoon Ji LEE, Seung Ho AHN, Yoon Sung LEE, Sang Joon LEE, Sa Heum KIM, Dong Hui KIM
  • Publication number: 20200185678
    Abstract: Disclosed is lithium secondary battery that may include: a positive electrode; a negative electrode; an electrolyte; and a separator positioned between the positive electrode and the negative electrode. The separator may include: a separator substrate; and a fibrous adhesive layer formed on one or both surfaces of the separator substrate.
    Type: Application
    Filed: September 17, 2019
    Publication date: June 11, 2020
    Inventors: Sang Mok Park, Yeolmae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung-Min Oh
  • Publication number: 20200168905
    Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).
    Type: Application
    Filed: April 22, 2019
    Publication date: May 28, 2020
    Inventors: Seung-Min Oh, KiSeok Koh, Yeolmae Yeo, Dongjun Kim, Yoon Sung Lee, Jieun Lee, Sa Heum Kim, Seung-Taek Myung
  • Publication number: 20200119394
    Abstract: Disclosed are a method of manufacturing a solid electrolyte, a solid electrolyte manufactured using the method, and an all-solid cell including the solid electrolyte. The method includes preparing an electrolyte admixture including a solid electrolyte precursor and a solvent, drying the electrolyte admixture and removing the solvent from the electrolyte admixture to form a dry electrolyte mixture, and heat-treating the dry electrolyte mixture to form a crystallized solid electrolyte.
    Type: Application
    Filed: April 9, 2019
    Publication date: April 16, 2020
    Inventors: Yong Jun Jang, Pil Gun Oh, Hong Seok Min, Yong Sub Yoon, Sa Heum Kim, Ju Yeong Seong
  • Publication number: 20190372162
    Abstract: Disclose are an electrolyte composite for a lithium secondary battery having an improved output; a cathode including a protective film on its surface; and a lithium secondary battery comprising the same.
    Type: Application
    Filed: September 25, 2018
    Publication date: December 5, 2019
    Inventors: Yoon Sung Lee, KiSeok Koh, Jung Young Cho, Ikkyu Kim, Yeolmae Yeo, Seung-Min Oh, Sa Heum Kim, Sungmin Choi
  • Publication number: 20190273253
    Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.
    Type: Application
    Filed: May 1, 2019
    Publication date: September 5, 2019
    Inventors: Kyo Min Shin, Sa Heum Kim, Hong Seok Min, Mihai Robert Zamfir, Je Mee Joe, Didier Pribat, Yeo Jin Lee
  • Patent number: 10347918
    Abstract: A surface-treated cathode active material useful for manufacturing a lithium secondary battery have excellent output characteristics by performing a double coating with metal oxide and an electron and ion conductive polymerized copolymer on a surface of a cathode active material for a lithium secondary battery to enhance electrochemical properties and thermal stability of the cathode active material.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: July 9, 2019
    Assignees: HYUNDAI MOTOR COMPANY, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIV.)
    Inventors: Kyo Min Shin, Sa Heum Kim, Dong Gun Kim, Yun Chae Jung, Dong Won Kim, Ik Su Kang, Yoon Sung Lee
  • Publication number: 20190198917
    Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd??[Formula 1] wherein 6?a?7, 3<b<6, 0<c?1, 0<d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).
    Type: Application
    Filed: October 17, 2018
    Publication date: June 27, 2019
    Inventors: Ju Yeong Seong, Yong Jun Jang, Hong Seok Min, Sa Heum Kim, Yong Sub Yoon, Pil Gun Oh, Dong Wook Shin, Chan Hwi Park, Jin Oh Son