Patents by Inventor Da-Young Sung

Da-Young Sung 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: 20190245240
    Abstract: The present invention relates to a Li-rich antiperovskite compound and the use thereof, and more particularly, to a Li-rich antiperovskite compound having a novel structure in which a dopant is substituted in a Li3OCl compound, wherein the dopant is substituted for an O site rather than an anionic Cl site, as known in the art, and an electrolyte using the same. The Li-rich antiperovskite compound has high lithium ion conductivity and excellent thermal stability, and thus can be applied as an electrolyte for lithium secondary batteries which are driven at a high temperature.
    Type: Application
    Filed: September 21, 2017
    Publication date: August 8, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Se Ho PARK, Chanyeup CHUNG, Da Young SUNG, Minchul JANG, Eunkyung PARK, Changhun PARK
  • Publication number: 20190226109
    Abstract: An electroplating solution for lithium metal, and a method for preparing a lithium metal electrode using the same, and in particular, while preparing a lithium metal electrode using electroplating, a lithium metal electrode having enhanced surface properties may be prepared by electroplating using a plating solution including a lithium nitrogen oxide and a metal nitrogen oxide, and, by using such a lithium metal electrode in a battery, lifetime properties of the battery may be enhanced.
    Type: Application
    Filed: April 4, 2018
    Publication date: July 25, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Changhun PARK, Minchul JANG, Da Young SUNG, Se Ho PARK, Doyeon KIM, Donghyeon KANG
  • Patent number: 10361470
    Abstract: A cartridge having a novel structure for guaranteeing stable operational performance of a secondary battery that operates at a high temperature or has improved performance at a high temperature, and a battery module including the cartridge is provided. The battery module includes at least one secondary battery; and a cartridge receiving at least a portion of the secondary battery and configured to be stacked in at least one direction, the cartridge including a heat insulating member.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 23, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Ki-Young Kwon, Da-Young Sung, Young-Jin Yi, Min-Chul Jang, Byoung-Hyo Jung, Ye-Hoon Im, Doo-Kyung Yang
  • Publication number: 20190131651
    Abstract: The present invention relates to a Li-rich antiperovskite-coated LCO-based lithium complex, a method of preparing the same, and a positive electrode active material and a lithium secondary battery, both of which include the LCO-based lithium complex. When a lithium complex in which a coating layer of a compound having a lithium-rich antiperovskite (LiRAP) crystal structure is formed on surfaces of LCO-based particles is applied as the positive electrode active material, the lithium complex is favorable for batteries which are operated at a high voltage, has high lithium ion conductivity, and can be applied to lithium secondary batteries which are driven at a high temperature due to high thermal stability.
    Type: Application
    Filed: September 15, 2017
    Publication date: May 2, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Se Ho PARK, Da Young SUNG, Minchul JANG, Byoungkuk SON, Junghun CHOI
  • Patent number: 10249872
    Abstract: The present specification relates to a silicon-carbon composite, a negative electrode including the same, a secondary battery using the silicon-carbon composite, and a method for preparing the silicon-carbon composite.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: April 2, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Minchul Jang, Jeong Kyu Kim, Yoo Seok Kim, Suhwan Kim, Jinhyoung Yoo, Da Young Sung
  • Publication number: 20190097239
    Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. More specifically, the cathode for a lithium-sulfur battery according to an exemplary embodiment of the present application includes: a cathode active part including a sulfur-carbon composite; and a cathode coating layer including an amphiphilic polymer provided on at least one portion of a surface of the cathode active part and including a hydrophilic portion and a hydrophobic portion.
    Type: Application
    Filed: November 28, 2018
    Publication date: March 28, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Byoungkuk SON, Minchul JANG, Min Seo KIM, Da Young SUNG, Seong Ho LEE
  • Patent number: 10243212
    Abstract: Disclosed are an electrode assembly for sulfur-lithium ion batteries that uses a lithium-containing compound as a cathode active material and a sulfur-containing compound as an anode active material and a sulfur-lithium ion battery including the same.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: March 26, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Min Chul Jang, Hong Kyu Park, Yu Mi Kim, Byoung Kuk Son, Da Young Sung, Seong Ho Lee
  • Publication number: 20190051931
    Abstract: The present invention relates to a solid electrolyte comprising a sulfide-based compound and an all-solid-state battery applied therewith and, more particularly, to a solid electrolyte comprising a sulfide-based compound that is free of phosphorus (P) element but exhibits high ionic conductivity, and an all-solid-state battery applied therewith. The sulfide-based solid electrolyte and the all-solid-state battery applied therewith according to the present invention exhibit improved reactivity to moisture to prevent the generation of toxic gas, resulting in an improvement in safety and stability and do not reduce in ion conductivity even after being left in air, and the solid electrolyte is easy to handle and store thanks to the improved shelf stability thereof.
    Type: Application
    Filed: January 12, 2017
    Publication date: February 14, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Da Young SUNG, Chan Yeup CHUNG, Su Hwan KIM, Jong Hyun CHAE, Doo Kyung YANG
  • Patent number: 10170766
    Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. More specifically, the cathode for a lithium-sulfur battery according to an exemplary embodiment of the present application includes: a cathode active part including a sulfur-carbon composite; and a cathode coating layer including an amphiphilic polymer provided on at least one portion of a surface of the cathode active part and including a hydrophilic portion and a hydrophobic portion.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkuk Son, Minchul Jang, Min Seo Kim, Da Young Sung, Seong Ho Lee
  • Publication number: 20180323430
    Abstract: The present invention relates to a lithium secondary battery, more particularly, to a lithium secondary battery in which a low-cost positive electrode active material is applied and a negative electrode active material of lithium metal is formed on the positive electrode side, and to a preparation method thereof. The lithium secondary battery according to the present invention can be produced at a low unit cost of production because it employs a complex combined from relatively inexpensive Co, CoO, Co3O4 and Li2O, instead of LiCoO2 which is a common positive electrode active material, and the lithium secondary battery is also easy to mass produce because of its simple manufacturing process since LiCoO2 is synthesized through an electrochemical reaction due to operating of the battery without a separate heat treatment process.
    Type: Application
    Filed: June 12, 2017
    Publication date: November 8, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Byoungkuk SON, Minchul JANG, Junghun CHOI, Da Young SUNG, Se Ho PARK
  • Patent number: 9985291
    Abstract: The present invention relates to a cathode active material for a lithium-sulfur battery and a method of preparing the same, and more particularly, to a cathode active material for a lithium-sulfur battery comprising: an amphiphilic polymer comprising hydrophilicity parts and hydrophobicity parts; and a sulfur-carbon composite, and a method of preparing the same. When a lithium-sulfur battery is prepared using the cathode active material, there is an effect which may enhance the electric conductivity in an electrode, cycle characteristics and capacity.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: May 29, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkuk Son, Minchul Jang, Yu Mi Kim, Hong Kyu Park, Da Young Sung, Seong Ho Lee
  • Patent number: 9911975
    Abstract: The present application relates to a carbon nanotube-sulfur composite including a carbon nanotube aggregate, and a method for preparing the same.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 6, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Min Seo Kim, Seong Ho Lee, Minchul Jang, Da Young Sung
  • Patent number: 9889751
    Abstract: The present invention provides a battery management apparatus and method which connect a plurality of batteries having different energy densities to each other and control power supplied through the plurality of batteries to control the driving of the driving body.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: February 13, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Minchul Jang, Dong Keun Kwon, Min Seo Kim, Yu Mi Kim, Byoungkuk Son, Da Young Sung, Seong Ho Lee, Gi Su Park
  • Publication number: 20180034121
    Abstract: The present disclosure provides a cartridge having a novel structure for guaranteeing stable operational performance of a secondary battery that operates at a high temperature or has improved performance at a high temperature, and a battery module including the cartridge. The battery module of the present disclosure include: at least one secondary battery; and a cartridge receiving at least a portion of the secondary battery and configured to be stacked in at least one direction, the cartridge including a heat insulating member.
    Type: Application
    Filed: February 4, 2016
    Publication date: February 1, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Ki-Young KWON, Da-Young SUNG, Young-Jin YI, Min-Chul JANG, Byoung-Hyo JUNG, Ye-Hoon IM, Doo-Kyung YANG
  • Patent number: 9876211
    Abstract: The present application relates to a separation membrane and a lithium-sulfur battery including the same, and the separation membrane according to the present application prevents elution of lithium polysulfide in a cathode and suppresses growth of a lithium dendrite generated in an anode, and thus has an effect that a life-span and safety of the battery are improved.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: January 23, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkuk Son, Seong Ho Lee, Minchul Jang, Hyungsam Choi, Joong Jin Han, Min Seo Kim, Suhwan Kim, Seungpyo Jeong, Yu Mi Kim, Da Young Sung, Youngjea Kim, Gi Su Park
  • Patent number: 9673443
    Abstract: The present disclosure relates to a lithium electrode, comprising a porous metallic current collector; and lithium metal inserted into pores present in the metallic current collector. The lithium electrode according to the present disclosure can increase contact surface between lithium metal and a current collector to improve the performances of a lithium secondary battery, and can exhibit uniform electron distribution therein to prevent the growth of lithium dendrites during the operation of a lithium secondary battery, thereby improving the safety of a lithium secondary battery.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: June 6, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Byoung-Kuk Son, Min-Chul Jang, Min-Seo Kim, Da-Young Sung, Seong-Ho Lee
  • Publication number: 20170092936
    Abstract: The present specification relates to a silicon-carbon composite, a negative electrode including the same, a secondary battery using the silicon-carbon composite, and a method for preparing the silicon-carbon composite.
    Type: Application
    Filed: June 10, 2015
    Publication date: March 30, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Minchul JANG, Jeong Kyu KIM, Yoo Seok KIM, Suhwan KIM, Jinhyoung YOO, Da Young SUNG
  • Publication number: 20160248087
    Abstract: The present application relates to a carbon nanotube-sulfur composite including a carbon nanotube aggregate, and a method for preparing the same.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 25, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Min Seo KIM, Seong Ho LEE, Minchul JANG, Da Young SUNG
  • Publication number: 20160233475
    Abstract: The present application relates to a separation membrane and a lithium-sulfur battery including the same, and the separation membrane according to the present application prevents elution of lithium polysulfide in a cathode and suppresses growth of a lithium dendrite generated in an anode, and thus has an effect that a life-span and safety of the battery are improved.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 11, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Byoungkuk SON, Seong Ho LEE, Minchul JANG, Hyungsam CHOI, Joong Jin HAN, Min Seo KIM, Suhwan KIM, Seungpyo JEONG, Yu Mi KIM, Da Young SUNG, Youngjea KIM, Gi Su PARK
  • Publication number: 20160164103
    Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. More specifically, the cathode for a lithium-sulfur battery according to an exemplary embodiment of the present application includes: a cathode active part including a sulfur-carbon composite; and a cathode coating layer including an amphiphilic polymer provided on at least one portion of a surface of the cathode active part and including a hydrophilic portion and a hydrophobic portion.
    Type: Application
    Filed: July 8, 2014
    Publication date: June 9, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Byoungkuk SON, Minchul JANG, Min Seo KIM, Da Young SUNG, Seong Ho LEE