Patents by Inventor Sung Ju CHO

Sung Ju CHO 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: 20200203758
    Abstract: An electrolyte complex for a lithium-sulfur battery, which can improve battery capacity and life characteristic by applying different solid electrolytes to each of the positive electrode and the negative electrode of an electrochemical device, and can reduce the interfacial resistance between the electrolyte and the electrode by integrating the solid electrolyte and the electrode; an electrochemical device including the same; and a method for preparing the same. The electrolyte complex for a lithium-sulfur battery includes a first and a second phase-separated solid electrolytes, wherein the first electrolyte positioned to the positive electrode side and the second electrolyte positioned to the negative electrode side form a layered structure.
    Type: Application
    Filed: October 31, 2018
    Publication date: June 25, 2020
    Applicants: LG CHEM, LTD., UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Eunkyung PARK, Sang-Young LEE, Sung-Ju CHO, Minchul JANG, Doo Kyung YANG, Bora JUNG
  • Publication number: 20200067049
    Abstract: The present invention provides an electrode assembly, which includes a first electrode, an adhesive layer disposed on the first electrode and including a host layer comprising a host and a guest layer comprising a guest, a separator disposed on the adhesive layer, and a second electrode disposed on the separator, a method of manufacturing the same, and a secondary battery including the same.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 27, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jung Pil Lee, Sung Ju Cho
  • Publication number: 20190372149
    Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.
    Type: Application
    Filed: May 15, 2018
    Publication date: December 5, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Ju CHO, Ho-Suk SHIN, Seung-He WOO, Sung-Joong KANG, Hyea-Eun HAN
  • Publication number: 20190237747
    Abstract: An electrode for an all solid type battery is designed such that fibrous carbon materials serving as a conductor are densely arranged crossed into a 3-dimensional structure in the form of a mesh of a nonwoven fabric-like shape, and an inorganic solid electrolyte and electrode active material particles are impregnated and uniformly dispersed in the structure. By this structural feature, the electrode for an all solid type battery has very good electron conductivity and ionic conductivity.
    Type: Application
    Filed: May 15, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Ju CHO, Ho-Suk SHIN, Seung-He WOO, Sung-Joong KANG, Hyea-Eun HAN
  • Publication number: 20190229328
    Abstract: An electrode for a solid state battery is provided. The electrode active material layer of the electrode shows improved mechanical properties, such as elasticity or rigidity, of the electrode layer through the crosslinking of a binder resin. Thus, it is possible to inhibit or reduce the effect of swelling and/or shrinking of the electrode active material during charging/discharging. Therefore, the interfacial adhesion between the electrode active material layer and an electrolyte layer and the interfacial adhesion between the electrode active material layer and a current collector are maintained to a high level to provide a solid state battery having excellent cycle characteristics.
    Type: Application
    Filed: March 22, 2018
    Publication date: July 25, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Ju CHO, Ho-Suk SHIN, Seung-He WOO, Sung-Joong KANG, Hyea-Eun HAN
  • Publication number: 20190207220
    Abstract: An electrode assembly for a solid state battery includes a positive electrode, a negative electrode and a solid electrolyte layer interposed between the positive electrode and the negative electrode. In addition, the binder disposed at the interface between the negative electrode and the solid electrolyte layer, the interface between the positive electrode and the solid electrolyte layer and/or at a predetermined depth from the interface is crosslinked to form a three-dimensional network. In other words, in the electrode assembly, the binder contained in the negative electrode and the solid electrolyte layer and/or the binder contained in the positive electrode and the solid electrolyte layer is crosslinked to improve the interfacial binding force between the negative electrode and the solid electrolyte layer and/or between the positive electrode and the solid electrolyte layer, and thus ion conductivity is maintained to a significantly high level.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 4, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Ju CHO, Ho-Suk SHIN, Seung-He WOO, Sung-Joong KANG, Hyea-Eun HAN
  • Publication number: 20180358644
    Abstract: The present invention relates to a secondary battery comprising: an electrode assembly; and a case in which the electrode assembly is accommodated, wherein the case comprises a thermal contractible protection layer that is contracted by heat.
    Type: Application
    Filed: May 22, 2017
    Publication date: December 13, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jung Pil Lee, Sung Ju Cho
  • Publication number: 20180205069
    Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an actual electrolyte solution impregnation time for an electrode active material, setting an estimated impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the estimated impregnation time in a production process.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 19, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jung Pil LEE, Eun Bee KIM, Jong Hwa LEE, Hye Ri JUNG, Sung Ju CHO
  • Publication number: 20180108941
    Abstract: Provided are an electrode for an electrochemical device, a method for producing the same, and an electrochemical device including the electrode. The electrode for an electrochemical device includes: a network structure including a cellulose fiber and a conductive material in which the ratio of the length to the thickness (L/D) is 50 or more; and an active material which is dispersed in the network structure.
    Type: Application
    Filed: May 13, 2015
    Publication date: April 19, 2018
    Inventors: Sun Young LEE, Sang Young LEE, Sang Jin CHUN, Sung Ju CHO, Sang Bum PARK, Don Ha CHOI, Heun Ho CHOI, Jung Hwan KIM
  • Publication number: 20180034101
    Abstract: Disclosed herein are a gel polymer electrolyte, a method of manufacturing the same, and an electrochemical device including the same. According to the present invention, a gel polymer electrolyte including: a multi-component crosslinked polymer matrix; a dissociable salt; and an organic solvent, wherein a content of the multi-component crosslinked polymer matrix is 1 to 50 wt % and the multi-component crosslinked polymer matrix has a net structure formed by crosslinking at least three different kinds of crosslinkable monomers, each of the crosslinkable monomers including at least two functional groups selected from the group consisting of a carboxylic group, an acrylate group, and a cyano group, a method of manufacturing the same using a thermal crosslinking or photo-crosslinking process, and an electrochemical device including the same, may be provided.
    Type: Application
    Filed: December 14, 2015
    Publication date: February 1, 2018
    Inventors: Sang Young Lee, Se Hee Kim, Sung Ju Cho
  • Publication number: 20170222252
    Abstract: The present invention relates to an electrochemical element and a method for producing same, the electrochemical element comprising: electrodes comprising a composite of active material and conductive material having a nanofiber structure; and a cellulose nanofiber separator combined with the electrodes. The electrochemical element according to the present invention obviates the need for separate binder and electrode current collector, has a stable interfacial surface due to the physical union of the separator and electrode, can assure superb mechanical and physical properties, and can maintain stable battery performance even against deformations due to a variety of external impact.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 3, 2017
    Applicant: Korea Forest Research Institute
    Inventors: Sun Young LEE, Sang Young LEE, Keun Ho CHOI, Sang Jin CHUN, Sang Bum PARK, Don Ha CHOI, Sung Ju CHO
  • Patent number: 9640286
    Abstract: An apparatus for cooling a spent fuel pool having a heat exchanger includes a cooling water pool positioned above the spent fuel pool; a floating device configured to be elevated according to a water level of a cooling water in the spent fuel pool; and an emergency cooling water supply pipe configured to form a path through which the cooling water of the cooling water pool is moved to the spent fuel pool and configured to include a floating valve that opens or closes a flow passage of the cooling water in connection with the elevation of the floating device.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: May 2, 2017
    Assignee: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Sang Jong Lee, Geol Woo Lee, Young Baek Kim, Jae Don Choi, Jae Il Lee, Sung Ju Cho, Jung Seon An, Dong Kyu Lee, Hye Jin Kim, Dong Uk Choi
  • Publication number: 20130108004
    Abstract: An apparatus for cooling a spent fuel pool having a heat exchanger includes a cooling water pool positioned above the spent fuel pool; a floating device configured to be elevated according to a water level of a cooling water in the spent fuel pool; and an emergency cooling water supply pipe configured to form a path through which the cooling water of the cooling water pool is moved to the spent fuel pool and configured to include a floating valve that opens or closes a flow passage of the cooling water in connection with the elevation of the floating device.
    Type: Application
    Filed: August 23, 2012
    Publication date: May 2, 2013
    Applicant: KEPCO NUCLEAR RUEL CO., LTD.
    Inventors: Sang Jong Lee, Geol Woo Lee, Young Baek Kim, Jae Don Choi, Jae Il Lee, Sung Ju Cho, Jung Seon An, Dong Kyu Lee, Hye Jin Kim, Dong Uk Choi
  • Publication number: 20080139664
    Abstract: The invention provides new inhibitors of protein glycation, identified from compound libraries by a high throughput screening assay. The anti-glycation agents so identified are characterized by a variety of chemical structures and are useful for the prevention or treatment of age-, diabetes-, and smoking-related complications, including neuropathy, nephropathy, ocular pathologies, or the loss of mechanical properties of collagenous tissues. Among compounds identified as having the anti-glycation activity, of special interest are epinephrine and its analogs, in particular D-epinephrine and its analogs, which are particularly useful for the prevention or treatment of age-, diabetes-, and smoking-related ocular pathologies.
    Type: Application
    Filed: February 11, 2008
    Publication date: June 12, 2008
    Applicant: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Faustinus YEBOAH, Yasuo KONISHI, Sung Ju CHO, Jittiwud LERTVORACHON, Taira KIYOTA, Tomasz Popek