Patents by Inventor Minchul Jang

Minchul Jang 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).

  • 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: 10199693
    Abstract: The present specification relates to an anode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method for manufacturing an anode.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 5, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Minchul Jang, Jeong Kyu Kim, Byoungkuk Son, Seong Ho Lee
  • 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: 10103380
    Abstract: The present application relates to a cathode for a lithium-sulfur battery and a method of preparing the same. A 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 provided on at least a portion of a surface of the cathode active part and including an inorganic oxide.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: October 16, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkuk Son, Minchul Jang, Yu Mi Kim, Gi Su 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: 9954231
    Abstract: The present disclosure relates to a positive electrode for a lithium-air battery and a method for preparing the same, and the positive electrode for a lithium-air battery according to the present disclosure has advantages in that it improves electrical conductivity and mechanical strength of an electrode, and increases loading amounts.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: April 24, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Yu Mi Kim, Minchul Jang, Byoungkuk Son, Gi Su Park
  • 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
  • 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
  • Publication number: 20170294688
    Abstract: The present specification relates to an anode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method for manufacturing an anode.
    Type: Application
    Filed: September 24, 2015
    Publication date: October 12, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Minchul JANG, Byoungkuk SON, Seong Ho LEE, Junghun CHOI
  • Publication number: 20170279163
    Abstract: The present specification relates to an anode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method for manufacturing an anode.
    Type: Application
    Filed: September 24, 2015
    Publication date: September 28, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Minchul JANG, Jeong Kyu KIM, Byoungkuk SON, Seong Ho LEE
  • Publication number: 20170214053
    Abstract: The present specification relates to a lithium electrode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method for preparing a lithium electrode.
    Type: Application
    Filed: September 2, 2015
    Publication date: July 27, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Taek Gyoung KIM, Minchul JANG, Doo Kyung YANG, Byoungkuk SON, Changhun PARK, Junghun CHOI, Myeonghun SONG
  • Patent number: 9666862
    Abstract: Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: May 30, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Sung kyun Chang, Seo-Jae Lee, Sanghoon Choy, Euiyong Bang, Minchul Jang, Ki-Young Lee
  • Publication number: 20170117551
    Abstract: The present application relates to a lithium electrode and a lithium battery including the same.
    Type: Application
    Filed: June 15, 2015
    Publication date: April 27, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Junghun CHOI, Minchul JANG, Kiyoung KWON, Byoungkuk SON, Seong Ho LEE, Intae PARK, Changhun PARK
  • Publication number: 20170104209
    Abstract: The present application relates to a lithium electrode and a lithium secondary battery including the same.
    Type: Application
    Filed: June 15, 2015
    Publication date: April 13, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Byoungkuk SON, Minchul JANG, Kiyoung KWON, Seong Ho LEE, Intae PARK, Changhun PARK, Junghun CHOI
  • 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