Patents by Inventor Chul Haeng Lee

Chul Haeng Lee 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: 20210057780
    Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, a first organic solvent that is ethylene carbonate, a second organic solvent excluding ethylene carbonate, and an oligomer represented by Formula 1 wherein a concentration of the lithium salt is 1.2 M to 3.3 M, and, wherein the first organic solvent is included in an amount of 0.1 wt % to 12 wt % based on a total weight of the non-aqueous electrolyte solution.
    Type: Application
    Filed: September 27, 2019
    Publication date: February 25, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jeong Woo Oh, Chul Haeng Lee, Hyung Tae Kim
  • Publication number: 20210043934
    Abstract: The present invention provides a lithium secondary battery including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, and a gel polymer electrolyte formed by polymerizing an oligomer, wherein one or more electrodes selected from the positive electrode and the negative electrode includes an electrode current collector, an electrode active material layer formed on the electrode current collector, and a coating layer formed on the electrode active material layer and including a first binder, and the first binder is bonded to the gel polymer electrolyte.
    Type: Application
    Filed: April 29, 2019
    Publication date: February 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE
  • Publication number: 20210036365
    Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery includes an organic solvent, LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, an oligomer represented by Formula 1, as a first additive, and a mixed additive of lithium difluorophosphate (LiDFP), fluorobenzene (FB), and tetravinylsilane (TVS), as a second additive.
    Type: Application
    Filed: July 2, 2019
    Publication date: February 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Gwang Yeon Kim, Chul Haeng Lee, Kyoung Ho Ahn, Jeong Woo Oh
  • Publication number: 20210036364
    Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as an additive. The compound has an excellent effect of removing a decomposition product, such as HF and PF5, generated from the lithium salt in the electrolyte solution. The lithium secondary battery has improved high-temperature storage characteristics by including the non-aqueous electrolyte solution.
    Type: Application
    Filed: February 12, 2019
    Publication date: February 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Seung Kim, Chul Haeng Lee, Sung Hoon Yu, Hyun Yeong Lee
  • Patent number: 10892519
    Abstract: The present invention relates to a solid polymer electrolyte formed of a polymer matrix including a lithium ion conductor, and a method of preparing the same. The solid polymer electrolyte of the present invention can be molded in the form of a film and used in an electrochemical device such as a lithium polymer secondary battery or the like.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 12, 2021
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Chul Haeng Lee, Jeong Woo Oh, Jung Hoon Lee, Yi Jin Jung
  • Publication number: 20210005859
    Abstract: Disclosed herein is a porous separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the porous separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.
    Type: Application
    Filed: April 17, 2019
    Publication date: January 7, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Kyoung Ho AHN, Kwan Woo NAM, Chul Haeng LEE, Young Duk KIM, Je An LEE
  • Patent number: 10878214
    Abstract: Provided is a complex biometric sensor. The complex biometric sensor includes a substrate including a light emitting region, a first light receiving region, and a second light receiving region, a light emitting part disposed adjacent to the substrate in the light emitting region, a color conversion layer disposed on the substrate in the light emitting region and vertically overlapping the light emitting part; a first light receiving layer disposed on the substrate in the first light receiving region, and a second light receiving layer disposed on the substrate in the second light receiving region. The light emitting part generates light of a first wavelength. The color conversion layer receives light of the first wavelength and emits the light of the first wavelength and light of the second wavelength. The first light receiving layer detects the light of the first wavelength. The second light receiving layer detects the light of the second wavelength.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: December 29, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chul Woong Joo, Seung Youl Kang, Jaehyun Moon, Seongdeok Ahn, Jae-Eun Pi, Young Sam Park, Byoung-Hwa Kwon, Sung Haeng Cho, Jeong Ik Lee, Nam Sung Cho, Su Jae Lee
  • Publication number: 20200392010
    Abstract: The present invention relates to a method for preparing a lithium bis(fluorosulfonyl)imide salt, including a step of dissolving bis(chlorosulfonyl)imide in an organic solvent in a non-glass vessel to prepare a first reaction solution; a step of injecting lithium fluoride (LiF) to the first reaction solution in the non-glass vessel and refluxing while heating to prepare a second reaction solution; a step of separating a product including a lithium bis(fluorosulfonyl)imide salt and the organic solvent from the second reaction solution; and a step of obtaining the lithium bis(fluorosulfonyl)imide salt in a solid phase from the product, wherein the organic solvent is at least one or more selected from the group consisting of ethyl acetate, butyl acetate, chloroform, dichloromethane, dichloroethane, benzene, xylene and acetonitrile.
    Type: Application
    Filed: April 9, 2019
    Publication date: December 17, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Byung Soo Kang, Hyun Jik Lee, Won Jae Lee, Chul Haeng Lee, Young Min Lim
  • Publication number: 20200388877
    Abstract: A lithium secondary battery is disclosed herein. In some embodiment, a lithium secondary battery which includes a positive electrode including a positive electrode material mixture layer, wherein the positive electrode material mixture layer has a loading capacity of 3.7 mAh/cm2 to 10 mAh/cm2, a negative electrode including a negative electrode material mixture layer, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution including a lithium salt, an organic solvent, and a compound represented by Formula 1, the concentration of the lithium salt in the non-aqueous electrolyte solution is 1.5 M to 3 M, the organic solvent is a mixed solvent including a cyclic carbonate-based organic solvent and a linear carbonate-based organic solvent, and the compound represented by Formula 1 is included in an amount of 0.1 wt % to 5 wt % based on a total weight of the non-aqueous electrolyte solution.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 10, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gwang Yeon Kim, Jeong Woo Oh, Chul Haeng Lee, Kyoung Ho Ahn, Won Kyung Shin
  • Patent number: 10862165
    Abstract: Disclosed is a secondary battery including an electrode assembly, which includes a cathode, an anode and a separator interposed therebetween, and an electrolyte, wherein the anode includes lithium titanium oxide (LTO) as an anode active material and the electrolyte contains a phosphate-based compound as an additive.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: December 8, 2020
    Inventors: Kyoung-Ho Ahn, Chul-Haeng Lee, Doo-Kyung Yang, Jong-Ho Jeon, Yoo-Seok Kim, Min-Jung Kim, Jung-Hoon Lee, Yi-Jin Jung
  • Publication number: 20200373614
    Abstract: The present invention relates to a composition for a gel polymer electrolyte, which includes an oligomer represented by Formula 1, an anion stabilizing additive, a polymerization initiator, a lithium salt, and a non-aqueous solvent, wherein the anion stabilizing additive includes at least one selected from the group consisting of a phosphite-based compound represented by Formula 2 and a boron-based compound represented by Formula 3, and a gel polymer electrolyte and a lithium secondary battery which are prepared by using the same.
    Type: Application
    Filed: November 13, 2018
    Publication date: November 26, 2020
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee
  • Publication number: 20200373615
    Abstract: The present invention relates to a solid polymer electrolyte including a porous substrate formed of an inorganic fiber containing an ethylenically unsaturated group, a polymer compound coupled to the inorganic fiber and including a polymer network in which an oligomer containing a (meth)acrylate group is coupled in a three-dimensional structure, and a lithium salt, and to a lithium secondary battery including the same.
    Type: Application
    Filed: February 1, 2019
    Publication date: November 26, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE
  • Publication number: 20200365939
    Abstract: The present invention relates to a gel polymer electrolyte composition for a lithium secondary battery and a secondary battery including the same, and particularly, to a gel polymer electrolyte composition for a lithium secondary battery, which includes a lithium salt, a non-aqueous organic solvent, an ionic liquid, an oligomer having a specific structure, a heat stabilizer, and a polymerization initiator, and a lithium secondary battery in which high-temperature stability is improved by including the same.
    Type: Application
    Filed: November 30, 2018
    Publication date: November 19, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE, Jeong Woo OH
  • Publication number: 20200365905
    Abstract: The present invention relates to an electrode for a lithium secondary battery, which includes an electrode current collector and an electrode active material layer which is formed on one surface of the electrode current collector and includes an electrode active material and an organic binder containing an ethylenically unsaturated group, and a lithium secondary battery including the same.
    Type: Application
    Filed: March 25, 2019
    Publication date: November 19, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Won Kyung Shin, Kyoung Ho Ahn, Chul Haeng Lee, Jung Hoon Lee
  • Publication number: 20200365946
    Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as an additive. The compound has an excellent effect of removing a decomposition product generated from the lithium salt in the electrolyte solution. In some embodiments, a lithium secondary battery including the non-aqueous electrolyte solution has improved high-temperature storage characteristics by alleviating self-discharge.
    Type: Application
    Filed: April 10, 2019
    Publication date: November 19, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Seung Kim, Chul Haeng Lee, Jeong Woo Oh
  • Publication number: 20200365933
    Abstract: The present invention relates to a method of preparing a pouch type secondary battery, and particularly to a method of preparing a pouch type secondary battery which includes preparing a pouch type preliminary secondary battery by accommodating an electrode assembly in an inner space of a pouch type case, disposing a metallic ultrasonic member by being closely attached to both surfaces of the pouch type preliminary secondary battery, injecting a composition for a gel polymer electrolyte into the pouch type preliminary secondary battery, applying ultrasonic vibration to the pouch type preliminary secondary battery while pressurizing the pouch type preliminary secondary battery using the ultrasonic member, performing formation on the pouch type preliminary secondary battery, curing the composition for a gel polymer electrolyte, and degassing, wherein the ultrasonic member is maintained at a temperature of 30° C. to 80° C.
    Type: Application
    Filed: March 22, 2019
    Publication date: November 19, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Jae Won LEE, Kyoung Ho AHN, Chul Haeng LEE
  • Publication number: 20200358103
    Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, the positive electrode active material layer includes a positive electrode active material and carbon nanotubes, and the electrolyte solution includes a non-aqueous solvent, a lithium salt, and tetravinylsilane.
    Type: Application
    Filed: February 22, 2019
    Publication date: November 12, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Joo Yul Baek, Young Min Lim, Jun Muk Lim, Sang Hoon Choy, Chul Haeng Lee
  • Publication number: 20200343577
    Abstract: The present invention provides an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including a polymer, and one or more selected from the group consisting of an inorganic solid electrolyte particle and a ferrodielectric, wherein the polymer includes one or more selected from the group consisting of a polymer represented by Formula 1 and a polymer including a repeating unit represented by Formula 2.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 29, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Chul Haeng Lee, Jun Hyeok Han
  • Publication number: 20200343588
    Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including a lithium salt, an additive containing a compound represented by Formula 1, and an organic solvent.
    Type: Application
    Filed: June 11, 2019
    Publication date: October 29, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Seung Kim, Chul Haeng Lee, Yu Ha An, Jeong Woo Oh
  • Publication number: 20200335822
    Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery, includes an additive having metal ion adsorbability and capable of forming a stable ion conductive film on the surface of an electrode. In some embodiments, a lithium secondary battery including the same has an improved an abnormal voltage drop phenomenon.
    Type: Application
    Filed: August 24, 2018
    Publication date: October 22, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Chul Haeng Lee, Hyun Seung Kim