Patents by Inventor Byoung Kuk Son

Byoung Kuk Son 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: 11264618
    Abstract: A lithium metal electrode includes a current collector having a surface irregularity structure, a lithium metal layer disposed outside of the surface irregularity structure except the uppermost surface of the surface irregularity structure in the current collector, an electron-insulating protective layer disposed outside of the lithium metal layer, and a lithium ion-isolating layer disposed (1) on the uppermost surface of the surface irregularity structure of the current collector, or (2) on the uppermost surface of the surface irregularity structure of the current collector, on the uppermost surface of the lithium metal layer, and on the uppermost surface of the electron-insulating protective layer, wherein the electron-insulating protective layer includes a non-porous layer transporting lithium ions and having no pores, and a polymer porous layer disposed outside thereof. A lithium secondary battery and flexible secondary battery including the lithium metal electrode are also provided.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: March 1, 2022
    Inventors: Yong-Hee Lee, Dong-Hyeon Kang, In-Sung Uhm, Sung-Joong Kang, Min-Chul Jang, Byoung-Kuk Son, Dong-Chan Lee
  • Patent number: 11223037
    Abstract: A method for manufacturing an anode for a cable-type secondary battery, includes forming a lithium-containing electrode layer on the outer surface of a wire-type current collector; and surrounding the outer surface of the lithium-containing electrode layer with a substrate for forming a polymer layer spirally, and pressing the outside of the substrate for forming a polymer layer to form a polymer layer on the lithium-containing electrode layer, wherein the polymer layer includes a hydrophobic polymer, an ion conductive polymer, and a binder for binding the hydrophobic polymer and the ion conductive polymer with each other. An anode obtained from the method and a cable-type secondary battery including the anode are also provided.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: January 11, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jung-Hun Choi, Dong-Hyeon Kang, Sung-Joong Kang, Byoung-Kuk Son, In-Sung Uhm, Dong-Chan Lee, Yong-Hee Lee, Min-Chul Jang
  • Publication number: 20210111393
    Abstract: A method for manufacturing an anode for a cable-type secondary battery, includes forming a lithium-containing electrode layer on the outer surface of a wire-type current collector; and surrounding the outer surface of the lithium-containing electrode layer with a substrate for forming a polymer layer spirally, and pressing the outside of the substrate for forming a polymer layer to for a polymer layer on the lithium-containing electrode layer, wherein the polymer layer includes a hydrophobic polymer, an ion conductive polymer, and a binder for binding the hydrophobic polymer and the ion conductive polymer with each other. An anode obtained from the method and a cable-type secondary battery including the anode are also provided.
    Type: Application
    Filed: August 31, 2018
    Publication date: April 15, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Jung-Hun CHOI, Dong-Hyeon KANG, Sung-Joong KANG, Byoung-Kuk SON, In-Sung UHM, Dong-Chan LEE, Yong-Hee LEE, Min-Chul JANG
  • Patent number: 10633492
    Abstract: The present invention relates to a negative electrode for lithium secondary battery and a lithium secondary battery including the same. The negative electrode includes a negative electrode active layer comprising lithium, and a protective layer disposed on the negative electrode active layer, wherein the protective layer comprises a polymer matrix having a three dimensional crosslinked network structure of polymer or includes a non-crosslinked linear polymer, and an electrolyte in the polymer matrix in the amount of 100 to 1000 parts by weight based on 100 parts by weight of the polymer matrix. The negative electrode according to the present invention has no concern about loss of electrolyte and the resulting deterioration of battery life characteristics even during the repetitive charging/discharging of the battery and has improved battery stability due to the inhibition of growth of lithium dendrite.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: April 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Taek Gyoung Kim, Min Chul Jang, Byoung Kuk Son, Doo Kyung Yang
  • Publication number: 20200006779
    Abstract: A lithium metal electrode includes a current collector having a surface irregularity structure, a lithium metal layer disposed outside of the surface irregularity structure except the uppermost surface of the surface irregularity structure in the current collector, an electron-insulating protective layer disposed outside of the lithium metal layer, and a lithium ion-isolating layer disposed (1) on the uppermost surface of the surface irregularity structure of the current collector, or (2) on the uppermost surface of the surface irregularity structure of the current collector, on the uppermost surface of the lithium metal layer, and on the uppermost surface of the electron-insulating protective layer, wherein the electron-insulating protective layer includes a non-porous layer transporting lithium ions and having no pores, and a polymer porous layer disposed outside thereof. A lithium secondary battery and flexible secondary battery including the lithium metal electrode are also provided.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Yong-Hee Lee, Dong-Hyeon Kang, In-Sung Uhm, Sung-Joong Kang, Min-Chul Jang, Byoung-Kuk Son, Dong-Chan Lee
  • Patent number: 10297830
    Abstract: The present invention relates to a polymer-sulfur copolymer, a preparation method thereof, and a lithium-sulfur battery including the same. In the case of the polymer-sulfur copolymer according to the present invention, since the carrier is polymerized, there is no possibility that the carrier is eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a certain size in the copolymer, when used as a positive electrode active material for the lithium-sulfur battery, the problem of elution of the polysulfide can be improved. In addition, the polymer-sulfur copolymer according to the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high capacity battery.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 21, 2019
    Assignees: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byoung Kuk Son, Jang Wook Choi, Ali Coskun, Min Chul Jang, Doo Kyung Yang
  • 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: 20190067702
    Abstract: The present invention relates to a lithium secondary battery, and in particular, to a lithium secondary battery having lithium, a negative electrode active material, formed on a positive electrode side. In the lithium secondary battery according to the present invention, coating is performed while being blocked from the atmosphere through a process of forming a lithium thin film on a negative electrode current collector, and therefore, formation of a surface oxide layer of lithium metal caused by oxygen and moisture in the atmosphere can be suppressed, which resultantly leads to an effect of enhancing a cycle life property.
    Type: Application
    Filed: January 6, 2017
    Publication date: February 28, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Kuk SON, Min Chul JANG, Jung Hun CHOI, Eun Kyung PARK, Chang Hun PARK
  • Patent number: 10147942
    Abstract: The present invention relates to a multi-layer structured lithium metal electrode and a method for manufacturing the same and, specifically, to a multi-layer structured lithium metal electrode comprising: a buffer layer of lithium nitride (Li3N) formed on a lithium metal plate; and a protective layer of LiBON formed on the buffer layer, and to a method for manufacturing a multi-layer structured lithium metal electrode by continuously forming a lithium nitride buffer layer and a LiBON protective layer on a lithium metal plate through continuous reactive sputtering multi-layer structured lithium metal electrode multi-layer structured lithium metal electrode lithium metal plate multi-layer structured lithium metal electrode lithium metal plate. The multi-layer structured lithium metal electrode of the present invention can protect the reactivity of the lithium metal from moisture or an environment within a battery, and prevent the formation of dendrites, by forming the protective layer.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: December 4, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Byoung Kuk Son, Min Chul Jang, Eun Kyung Park, Doo Kyung Yang, Jung Hun Choi
  • Publication number: 20180190989
    Abstract: The present invention relates to a polymer-sulfur copolymer, a preparation method thereof, and a lithium-sulfur battery including the same. In the case of the polymer-sulfur copolymer according to the present invention, since the carrier is polymerized, there is no possibility that the carrier is eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a certain size in the copolymer, when used as a positive electrode active material for the lithium-sulfur battery, the problem of elution of the polysulfide can be improved. In addition, the polymer-sulfur copolymer according to the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high capacity battery.
    Type: Application
    Filed: January 24, 2017
    Publication date: July 5, 2018
    Applicants: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byoung Kuk SON, Jang Wook CHOI, Ali COSKUN, Min Chul JANG, Doo Kyung YANG
  • Publication number: 20180051137
    Abstract: The present invention relates to a negative electrode for lithium secondary battery and a lithium secondary battery including the same. The negative electrode includes a negative electrode active layer comprising lithium, and a protective layer disposed on the negative electrode active layer, wherein the protective layer comprises a polymer matrix having a three dimensional crosslinked network structure of polymer or includes a non-crosslinked linear polymer, and an electrolyte in the polymer matrix in the amount of 100 to 1000 parts by weight based on 100 parts by weight of the polymer matrix. The negative electrode according to the present invention has no concern about loss of electrolyte and the resulting deterioration of battery life characteristics even during the repetitive charging/discharging of the battery and has improved battery stability due to the inhibition of growth of lithium dendrite.
    Type: Application
    Filed: December 17, 2015
    Publication date: February 22, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Taek Gyoung KIM, Min Chul JANG, Byoung Kuk SON, Doo Kyung YANG
  • Publication number: 20170309899
    Abstract: The present invention relates to a multi-layer structured lithium metal electrode and a method for manufacturing the same and, specifically, to a multi-layer structured lithium metal electrode comprising: a buffer layer of lithium nitride (Li3N) formed on a lithium metal plate; and a protective layer of LiBON formed on the buffer layer, and to a method for manufacturing a multi-layer structured lithium metal electrode by continuously forming a lithium nitride buffer layer and a LiBON protective layer on a lithium metal plate through continuous reactive sputtering multi-layer structured lithium metal electrode multi-layer structured lithium metal electrode lithium metal plate multi-layer structured lithium metal electrode lithium metal plate. The multi-layer structured lithium metal electrode of the present invention can protect the reactivity of the lithium metal from moisture or an environment within a battery, and prevent the formation of dendrites, by forming the protective layer.
    Type: Application
    Filed: October 21, 2015
    Publication date: October 26, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Kuk SON, Min Chul JANG, Eun Kyung PARK, Doo Kyung YANG, Jung Hun CHOI
  • Patent number: 9711798
    Abstract: The present disclosure relates to a lithium electrode, comprising an electrode composite comprising a porous metallic current collector, and lithium metal inserted into pores present in the metallic current collector; and a protective membrane for lithium ion conduction, the protective membrane being formed on at least one surface of the electrode composite. 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: July 18, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Byoung-Kuk Son, Min-Chul Jang, Yu-Mi 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: 20160093887
    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: Application
    Filed: June 3, 2014
    Publication date: March 31, 2016
    Inventors: Min Chul Jang, Hong Kyu Park, Yu Mi Kim, Byoung Kuk Son, Da Young Sung, Seong Ho Lee
  • Publication number: 20150295246
    Abstract: The present disclosure relates to a lithium electrode, comprising an electrode composite comprising a porous metallic current collector, and lithium metal inserted into pores present in the metallic current collector; and a protective membrane for lithium ion conduction, the protective membrane being formed on at least one surface of the electrode composite. 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: Application
    Filed: September 3, 2014
    Publication date: October 15, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-Kuk Son, Min-Chul Jang, Yu-Mi Kim, Gi-Su Park
  • Publication number: 20150280212
    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: Application
    Filed: September 3, 2014
    Publication date: October 1, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-Kuk Son, Min-Chul Jang, Min-Seo Kim, Da-Young Sung, Seong-Ho Lee
  • Publication number: 20130017382
    Abstract: A double wavelength-reflective multi-layer film comprising a reflective layer part composed of at least one resin layer A and at least one resin layer B which are alternatively stacked, the resin layers A and B having refractive indexes different from each other and having a standard deviation in the thickness ranging from 6 to 30 nm, wherein the multi-layer film has an f-ratio of 0.01 to 0.99, is capable of reflecting two visible light wavelength regions in the form of one stack.
    Type: Application
    Filed: December 14, 2010
    Publication date: January 17, 2013
    Applicant: SKC CO., LTD
    Inventors: Se Yoon Woo, Gwan-Hyung Lee, Cheon Yong Joo, Hyung Suk Pak, Byoung Kuk Son, Dae Yong Shin
  • Publication number: 20120207993
    Abstract: A multilayered optical film has a structure in which a first resin layer comprising PEN and a second resin layer comprising PET copolymerized with heterocyclic polyvalent alcohol are alternatively laminated. The multilayered optical film has excellent optical characteristics because of having excellent heat resistance, showing excellent elongation in case of preparation, having low haze, and having a large difference in a refractive index between resin layers.
    Type: Application
    Filed: October 8, 2010
    Publication date: August 16, 2012
    Applicant: SKC CO., LTD
    Inventors: Cheon Yong Joo, Hyung Suk Park, Byoung Kuk Son, Dae Yong Shin