Patents by Inventor Yoon-sok Kang

Yoon-sok Kang 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).

  • RECHARGEABLE LITHIUM BATTERY
    Publication number: 20230268553
    Abstract: The present invention relates to a rechargeable lithium battery, the battery comprising: a positive electrode; a negative electrode; and an electrolyte comprising a smoothing additive having a reduction potential of at least ?0.5 V, but less than 0.9 V.
    Type: Application
    Filed: November 23, 2021
    Publication date: August 24, 2023
    Inventors: Yoon-Sok KANG, Youngsoo KIM, Jinhwan PARK, Suk-Gi HONG, Taehyun HWANG
  • NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING SAME
    Publication number: 20230261169
    Abstract: The present invention relates to a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same, wherein the negative electrode comprises a current collector, and a coating layer which is located on the current collector and comprises polyvinylidene fluoride polymer and LiF.
    Type: Application
    Filed: August 26, 2021
    Publication date: August 17, 2023
    Inventors: Taehyun HWANG, Kisuk KANG, Yoon-Sok KANG, Youngsoo KIM, Jinhwan PARK, Suk-Gi HONG, Meethong NONGLAK, Tamwattana ORAPA, Jihyeon KIM, Hyeokjun PARK, Gabin YOON
  • Composite cathode active material, method of preparing the composite cathode active material, and cathode and lithium battery each including the composite cathode active material
    Patent number: 11101461
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-young Mun, Jae-myung Lee, Gue-sung Kim, Yoon-sok Kang, Myung-hoon Kim, Jun-ho Park, Jin-hwan Park, Jae-gu Yoon, Byung-jin Choi
  • COMPOSITE CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE COMPOSITE CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM BATTERY EACH INCLUDING THE COMPOSITE CATHODE ACTIVE MATERIAL
    Publication number: 20200161645
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Inventors: Jun-young MUN, Jae-myung LEE, Gue-sung KIM, Yoon-sok KANG, Myung-hoon KIM, Jun-ho PARK, Jin-hwan PARK, Jae-gu YOON, Byung-jin CHOI
  • Composite cathode active material, method of preparing the composite cathode active material, and cathode and lithium battery each including the composite cathode active material
    Patent number: 10586980
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: March 10, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-young Mun, Jae-myung Lee, Gue-sung Kim, Yoon-sok Kang, Myung-hoon Kim, Jun-ho Park, Jin-hwan Park, Jae-gu Yoon, Byung-jin Choi
  • Electrolyte for lithium secondary battery and lithium secondary battery using the same
    Patent number: 10388990
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte including: a lithium salt; a non-aqueous organic solvent; and a piperazine derivative represented by Formula 1 having an oxidation potential lower than an oxidation potential of the non-aqueous organic solvent by about 2 V to about 4 V: wherein, in Formula 1, X, Y, and R1 to R4 are defined in the specification.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Jun-young Mun, Min-sik Park, Jae-gu Yoon
  • COMPOSITE CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE COMPOSITE CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM BATTERY EACH INCLUDING THE COMPOSITE CATHODE ACTIVE MATERIAL
    Publication number: 20180323426
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Inventors: Jun-young MUN, Jae-myung LEE, Gue-sung KIM, Yoon-sok KANG, Myung-hoon KIM, Jun-ho PARK, Jin-hwan PARK, Jae-gu YOON, Byung-jin CHOI
  • Composite cathode active material, method of preparing the composite cathode active material, and cathode and lithium battery each including the composite cathode active material
    Patent number: 10056608
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-young Mun, Jae-myung Lee, Gue-sung Kim, Yoon-sok Kang, Myung-hoon Kim, Jun-ho Park, Jin-hwan Park, Jae-gu Yoon, Byung-jin Choi
  • ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME
    Publication number: 20180026306
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte including: a lithium salt; a non-aqueous organic solvent; and a piperazine derivative represented by Formula 1 having an oxidation potential lower than an oxidation potential of the non-aqueous organic solvent by about 2 V to about 4 V: wherein, in Formula 1, X, Y, and R1 to R4 are defined in the specification.
    Type: Application
    Filed: October 4, 2017
    Publication date: January 25, 2018
    Inventors: Yoon-sok KANG, Jun-young MUN, Min-sik PARK, Jae-gu YOON
  • Electrolyte for lithium secondary battery and lithium secondary battery using the same
    Patent number: 9819054
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte including: a lithium salt; a non-aqueous organic solvent; and a piperazine derivative represented by Formula 1 having an oxidation potential lower than an oxidation potential of the non-aqueous organic solvent by about 2 V to about 4 V: wherein, in Formula 1, X, Y, and R1 to R4 are defined in the specification.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Jun-young Mun, Min-sik Park, Jae-gu Yoon
  • COMPOSITE CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE COMPOSITE CATHODE ACTIVE MATERIAL, AND CATHODE AND LITHIUM BATTERY EACH INCLUDING THE COMPOSITE CATHODE ACTIVE MATERIAL
    Publication number: 20170155136
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 1, 2017
    Inventors: Jun-young MUN, Jae-myung LEE, Gue-sung KIM, Yoon-sok KANG, Myung-hoon KIM, Jun-ho PARK, Jin-hwan PARK, Jae-gu YOON, Byung-jin CHOI
  • Composite cathode active material, method of preparing the composite cathode active material, and cathode and lithium battery each including the composite cathode active material
    Patent number: 9601761
    Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: March 21, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-young Mun, Jae-myung Lee, Gue-sung Kim, Yoon-sok Kang, Myung-hoon Kim, Jun-ho Park, Jin-hwan Park, Jae-gu Yoon, Byung-jin Choi
  • Surface-treated electrode active material, method of surface treating electrode active material, electrode, and lithium secondary battery
    Patent number: 9601750
    Abstract: A surface-treated electrode active material, a method of surface treating an electrode active material, an electrode, and a lithium secondary battery. The surface-treated electrode active material includes a surface metal oxide layer having higher degree of reduction of a metal than that of a bulk metal oxide layer. The method includes: forming a mixture by adding an untreated electrode active material comprising a metal oxide, and at least one of a basic material and a reducing material to a solvent; and stirring the mixture.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 21, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Jun-young Mun, Jin-hwan Park, Min-sik Park, Seung-mo Oh, Tae-ho Yoon
  • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    Patent number: 9590266
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, and a polar additive based on a substituted hetero-bicyclic compound. Oxidation of the electrolyte is prevented by formation of a polar thin film on a surface portion of the positive electrode, which facilitates transfer of lithium ions. The lithium secondary batteries using the electrolyte have excellent high temperature life characteristics and high temperature conservation characteristics.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: March 7, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Min-sik Park, Jun-young Mun, Jin-hwan Park, Dong-joon Lee
  • Composite cathode active material, method of preparing the same, and cathode and lithium battery containing the same
    Patent number: 9373868
    Abstract: A composite cathode active material including a lithium metal oxide including an oxide Formula 1 and sulfur, xLi2MnO3.(1?x?y)LiMO2.yLiMn2O4??(1) wherein 0<x<0.6, 0<y<0.1, and M is at least one selected from a metal and a metalloid.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: June 21, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung-jin Choi, Yoon-sok Kang, Jin-hwan Park, Jae-gu Yoon, Myung-hoon Kim, Jun-young Mun, Jun-ho Park, Sung-jin Ahn
  • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    Patent number: 9343778
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive represented by Formula 1 below: wherein CY1 and R1 through R7 are the same as defined above; and a lithium secondary battery containing the electrolyte.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: May 17, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-young Mun, Yoon-sok Kang, Jin-hwan Park, Min-sik Park
  • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    Patent number: 9118086
    Abstract: An electrolyte for a lithium secondary battery, which includes a lithium salt, a nonaqueous organic solvent and at least one additive selected from the group consisting of vitamin G (vitamin B2, riboflavin), vitamin B3 (niacinamide), vitamin B4 (adenine), vitamin B5 (pantothenic acid), vitamin H (vitamin B7, biotin), vitamin M (vitamin B9, folic acid), vitamin BX (4-aminobenzoic acid), vitamin D2 (ergocalciferol), vitamin D3 (cholecalciferol), vitamin K1 (phylloquinone), ascorbyl palmitate, and sodium ascorbate.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 25, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Seok-soo Lee, Won-chang Choi, Jin-hwan Park, Mi-jeong Song
  • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    Patent number: 9059476
    Abstract: An electrolyte for a lithium secondary battery, the electrolyte comprising: a lithium salt, a non-aqueous organic solvent, and an additive represented by Formula 1 below: wherein R1, R2, R3, and R4 are the same as defined in the detailed description.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: June 16, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-sok Kang, Seok-soo Lee, Young-gyoon Ryu, Jin-hwan Park, Mi-jeong Song
  • Surface treated anode active material and method of making the same, anode including the same, and lithium battery including the same
    Patent number: 8999579
    Abstract: An anode includes a collector; and an anode active material layer disposed on the collector comprises an anode active material, which is lithium oxide coated Li4Ti5O12, a conductive material, and a binder, wherein the lithium oxide intercalates and/or deintercalates lithium ions into and from the lattice structure of Li4Ti5O12. By coating the surface of the anode active material with lithium oxide, an anode including the surface-treated anode active material has a high capacity, high-rate properties, and a high initial efficiency.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: April 7, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joung-won Park, Yoon-sok Kang, Han-su Kim, Jae-gu Yoon, Gue-sung Kim
  • COMPOSITE CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND CATHODE AND LITHIUM BATTERY CONTAINING THE SAME
    Publication number: 20150079465
    Abstract: A composite cathode active material including a lithium metal oxide including an oxide Formula 1 and sulfur, xLi2MnO3.(1?x?y)LiMO2.yLiMn2O4??(1) wherein 0<x<0.6, 0<y<0.1, and M is at least one selected from a metal and a metalloid.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventors: Byung-jin CHOI, Yoon-sok KANG, Jin-hwan PARK, Jae-gu YOON, Myung-hoon KIM, Jun-young MUN, Jun-ho PARK, Sung-jin AHN