Patents by Inventor Won Sang KOH

Won Sang KOH 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).

  • Na based secondary battery
    Patent number: 10367226
    Abstract: Provided is a Na based secondary battery including: an anode containing sodium or a sodium alloy; a cathode containing a metal halide, which is a halide of at least one metal selected from a group consisting of alkali metals, transition metals, and Groups 12 to 14 metals, and a solvent dissolving the metal halide; and a sodium ion conductive solid electrolyte separating the cathode and the anode from each other.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: July 30, 2019
    Assignees: SK INNOVATION CO., LTD., FIELD UPGRADING USA, INC.
    Inventors: Jeong Soo Kim, Young Shol Kim, Je Hyun Chae, Won Sang Koh, June Soo Lee
  • Electrolyte for sodium secondary battery and sodium secondary battery using thereof
    Patent number: 10218034
    Abstract: Provided are an electrolyte for a sodium secondary battery and a sodium secondary battery using the same. More particularly, the sodium secondary battery includes an anode containing sodium, a cathode containing a transition metal, and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in an electrolyte containing a molten sodium salt and an electrolyte additive, the electrolyte additive including an inorganic sodium salt.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: February 26, 2019
    Assignees: SK INNOVATION CO., LTD., UNIST (ULSAN NATIONAL INSTITUTE SCIENCE AND TECHNOLOGY)
    Inventors: Seung Ok Lee, Won Sang Koh, Jeong Soo Kim, Dai In Park, Je Hyun Chae, Nam Soon Choi, Jun Yeong Jang
  • Current collector for battery and secondary battery comprising the same
    Patent number: 9780380
    Abstract: Provided is a current collector including a laminate in which a conductive substrate and an insulator are laminated, wherein the insulator is a porous insulator formed with an open pore channel penetrating through the insulator. The current collector may be used as a current collector for an electrode of a secondary battery and stably maintain capacity of the secondary battery at the time of repeating charge and discharge cycles.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: October 3, 2017
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Je Hyun Chae, Jeong Soo Kim, Won Sang Koh, Seung Ok Lee, Young Shol Kim
  • Sodium secondary battery
    Patent number: 9553337
    Abstract: Provided is a sodium secondary battery capable of operating at a low temperature. More particularly, the sodium secondary battery according to the present invention includes: an anode containing sodium; a cathode containing a transition metal and an alkali metal halide; and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in a molten salt electrolyte containing a sodium.metal halogen salt including at least two kinds of halogens.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: January 24, 2017
    Assignees: SK Innovation Co., Ltd., Ceramatec, Inc.
    Inventors: Je Hyun Chae, Won Sang Koh, Seung Ok Lee, Dai In Park, Jeong Soo Kim, Sai Bhavaraju, Mathew Richard Robins, Alexis L. Eccleston, Ashok V. Joshi
  • NA BASED SECONDARY BATTERY
    Publication number: 20160315345
    Abstract: Provided is a Na based secondary battery including: an anode containing sodium or a sodium alloy; a cathode containing a metal halide, which is a halide of at least one metal selected from a group consisting of alkali metals, transition metals, and Groups 12 to 14 metals, and a solvent dissolving the metal halide; and a sodium ion conductive solid electrolyte separating the cathode and the anode from each other.
    Type: Application
    Filed: December 10, 2013
    Publication date: October 27, 2016
    Inventors: Jeong Soo KIM, Young Shol KIM, Je Hyun CHAE, Won Sang KOH, June Soo LEE
  • ELECTROLYTE FOR SODIUM SECONDARY BATTERY AND SODIUM SECONDARY BATTERY USING THEREOF
    Publication number: 20160118695
    Abstract: Provided are an electrolyte for a sodium secondary battery and a sodium secondary battery using the same. More particularly, the sodium secondary battery includes an anode containing sodium, a cathode containing a transition metal, and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in an electrolyte containing a molten sodium salt and an electrolyte additive, the electrolyte additive including an inorganic sodium salt.
    Type: Application
    Filed: October 26, 2015
    Publication date: April 28, 2016
    Inventors: Seung Ok LEE, Won Sang KOH, Jeong Soo KIM, Dai In PARK, Je Hyun CHAE, Nam Soon CHOI, Jun Yeong JANG
  • Sodium Secondary Battery
    Publication number: 20150147619
    Abstract: Provided is a sodium secondary battery capable of operating at a low temperature. More particularly, the sodium secondary battery according to the present invention includes: an anode containing sodium; a cathode containing a transition metal and an alkali metal halide; and a sodium ion conductive solid electrolyte provided between the anode and the cathode, wherein the cathode is impregnated in a molten salt electrolyte containing a sodium.metal halogen salt including at least two kinds of halogens.
    Type: Application
    Filed: November 28, 2014
    Publication date: May 28, 2015
    Inventors: Je Hyun Chae, Won Sang Koh, Seung Ok Lee, Dai In Park, Jeong Soo Kim, Sai Bhavaraju, Mathew Richard Robins, Alexis L. Eccleston, Ashok V. Joshi
  • CURRENT COLLECTOR FOR BATTERY AND SECONDARY BATTERY COMPRISING THE SAME
    Publication number: 20140295238
    Abstract: Provided is a current collector including a laminate in which a conductive substrate and an insulator are laminated, wherein the insulator is a porous insulator formed with an open pore channel penetrating through the insulator. The current collector may be used as a current collector for an electrode of a secondary battery and stably maintain capacity of the secondary battery at the time of repeating charge and discharge cycles.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Je Hyun CHAE, Jeong Soo KIM, Won Sang KOH, Seung Ok LEE, Young Shol KIM