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).

  • Patent number: 10476104
    Abstract: Provided are a gel polymer electrolyte including a polymer network, and an electrolyte solution impregnated in the polymer network, wherein the polymer network is formed by combining a first oligomer, which includes unit A derived from a monomer including at least one copolymerizable acrylate or acrylic acid, unit C including urethane, and unit E including alkylene group substituted with one or more fluorine, in a three-dimensional structure, and a lithium secondary battery including the gel polymer electrolyte.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Jeong Woo Oh, Chul Haeng Lee, Yi Jin Jung, Sol Ji Park
  • Patent number: 10454137
    Abstract: Provided are a non-aqueous electrolyte solution, which includes (i) a first lithium salt, (ii) lithium bis(fluorosulfonyl)imide as a second lithium salt, (iii) a phosphazene-based compound as a first additive, and (iv) a non-aqueous organic solvent, and a lithium secondary battery including the non-aqueous electrolyte solution. With respect to a lithium secondary battery including the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on the surface of a negative electrode during initial charge and flame retardancy in a high-temperature environment may be provided to prevent the decomposition of the surface of a positive electrode and an oxidation reaction of the electrolyte solution, output characteristics and capacity characteristics after high-temperature storage as well as output characteristics may be improved.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee
  • Publication number: 20190311177
    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: Application
    Filed: April 8, 2019
    Publication date: October 10, 2019
    Applicant: 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: 20190296397
    Abstract: An electrolyte additive composition of the present invention may improve high-rate charge and discharge characteristics and high-temperature storage and life characteristics of a lithium secondary battery when the electrolyte additive composition is used in an electrolyte while including a novel borate-based lithium compound as well as a nitrile-based compound.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 26, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Young Min LIM, Chul Haeng LEE, Ha Eun KIM
  • Patent number: 10403934
    Abstract: The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, lithium bis(fluorosulfonyl)imide (LiFSI), and a pyridine-based compound represented by Formula 1, and a lithium secondary battery including the same. The lithium secondary battery of the present invention including the non-aqueous electrolyte solution of the present invention may exhibit excellent low-temperature and room-temperature output characteristics, high-temperature and room-temperature cycle characteristics, and capacity characteristics after high-temperature storage.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 3, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Gwang Yeon Kim, Young Min Lim, Chul Haeng Lee, Min Jung Kim, Ha Eun Kim
  • Publication number: 20190267660
    Abstract: The present invention relates to a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared by polymerizing the same, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a composition for a gel polymer electrolyte having improved high-temperature safety, a gel polymer electrolyte formed by polymerizing the composition in an inert atmosphere, and a lithium secondary battery including the gel polymer electrolyte.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 29, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
  • Publication number: 20190267661
    Abstract: A method for manufacturing an electrochemical device includes a discharge pretreatment step, where, external electric power is applied to a battery to discharge the battery, before charging the battery for the first time to perform formation of the battery, in order to remove a byproduct layer on the surface of a negative electrode. The method including the discharge pretreatment step before the first charge of a battery can improve the cycle life of an electrochemical device.
    Type: Application
    Filed: September 3, 2018
    Publication date: August 29, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Hyeok HAN, Kyoung-Ho AHN, Sol-Ji PARK, Chul-Haeng LEE
  • Publication number: 20190260080
    Abstract: The present invention relates to a non-aqueous electrolyte, and more particularly, to a non-aqueous electrolyte including lithium bis fluoro sulfonyl imide as a lithium salt and an organic solvent, wherein the content of the lithium salt is 3.5 M or more.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Yu Ra Jeong, Kyoung Ho Ahn, Sol Ji Park, Won Kyung Shin, Chul Haeng Lee
  • Patent number: 10381685
    Abstract: The present disclosure provides a non-aqueous liquid electrolyte comprising a non-aqueous organic solvent, a lithium salt, and an additive that is an isocyanate-based compound comprising a carbon-carbon triple bond. By comprising the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present disclosure in the non-aqueous liquid electrolyte, lifespan properties and high temperature durability are capable of being enhanced, and internal resistance of a battery is capable of being reduced.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 13, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Chul Haeng Lee, Jeong Woo Oh
  • Publication number: 20190245244
    Abstract: The present invention relates to a non-aqueous electrolyte solution additive, and a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery which comprise the same, wherein, specifically, since the non-aqueous electrolyte solution, which comprises a compound capable of maintaining a passive effect by increasing an effect of forming a solid electrolyte interface (SEI) on surfaces of a positive electrode and a negative electrode, is provided, high-temperature storage characteristics and life characteristics of the lithium secondary battery may be improved.
    Type: Application
    Filed: July 3, 2018
    Publication date: August 8, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee, Kyung Mi Lee
  • Publication number: 20190237805
    Abstract: An electrolyte additive composition of the present invention may improve high-rate charge and discharge characteristics and high-temperature storage and life characteristics of a lithium secondary battery and may achieve an effect of increasing reversible capacity when the electrolyte additive composition is used in an electrolyte while including a novel borate-based lithium compound as well as a lithiated additive.
    Type: Application
    Filed: March 16, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee, Jung Min Lee
  • Publication number: 20190237823
    Abstract: A method for manufacturing a lithium secondary battery including the steps of manufacturing a lithium secondary battery including an electrode assembly, a non-aqueous electrolyte in which the electrode assembly is impregnated, and a battery case receiving the non-aqueous electrolyte; performing formation of the lithium secondary battery; and performing a degassing process for removing gas generated inside the lithium secondary battery, wherein the non-aqueous electrolyte includes a lithium salt, an organic solvent and 1,2,3-trifluorobenzen as an additive, wherein the 1,2,3-trifluorobenzen is included in an amount of 0.1 wt % to 10 wt % based on the total weight of the non-aqueous electrolyte, and the formation step is performed by charging the state of charge (SOC) of the battery up to 10% to 80%, while applying a voltage of 3.5 V to 4.5 V under a pressure of 0.5 kgf/cm2 to 5 kgf/cm2 at 45° C. to 80° C.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Min Lee, Young Min Lim, Chul Haeng Lee, Yu Ha An, Yi Jin Jung, Yeon Ji Oh
  • Publication number: 20190214681
    Abstract: The present invention provides a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated benzene-based compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode, and a separator. With the non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a solid SEI film is formed on a negative electrode when initially charging a lithium secondary battery comprising the non-aqueous liquid electrolyte, and an output property of the lithium secondary battery is improved, and an output property and stability after high temperature storage are capable of being enhanced as well.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 11, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Chul Haeng Lee, Shul Kee Kim, Gwang Yeon Kim, Doo Kyung Yang
  • Publication number: 20190198925
    Abstract: The present invention relates to a non-aqueous electrolyte solution including a non-aqueous organic solvent, a lithium salt, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery including the same. Since the non-aqueous electrolyte solution according to an embodiment of the present invention may reduce gas, such as CO or CO2, generated in the secondary battery during high-temperature storage, it may further improve high-temperature stability of the lithium secondary battery.
    Type: Application
    Filed: January 12, 2018
    Publication date: June 27, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
  • Publication number: 20190148773
    Abstract: The present invention relates to a non-aqueous electrolyte solution which includes an ionizable lithium salt, an organic solvent, and a mixed additive, wherein the organic solvent comprises at least one cyclic carbonate-based organic solvent selected from the group consisting of ethylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-pentylene carbonate, 2,3-pentylene carbonate, vinylene carbonate, and fluoroethylene carbonate, and at least one linear carbonate-based organic solvent selected from the group consisting of dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, and ethylpropyl carbonate, the mixed additive includes vinylene carbonate, 1,3-propylene sulfate, and 1,3-propane sultone in a weight ratio of 1:1:1 to 1:0.5:0.2, and a total amount of the mixed additive is in a range of 1 to 4.
    Type: Application
    Filed: January 18, 2018
    Publication date: May 16, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Ha Eun Kim, Young Min Lim, Min Jung Kim, Chul Haeng Lee
  • Publication number: 20190140321
    Abstract: The present invention relates to a non-aqueous electrolyte for a lithium secondary battery including a pyridine-boron-based compound as an additive and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte including at least two types of lithium salts and a pyridine-boron-based compound and a lithium secondary battery which has an enhanced effect of suppressing an increase in resistance and generation of gas after being stored at high temperature by including both the non-aqueous electrolyte and a negative electrode including lithium titanium oxide (LTO) as a negative electrode active material.
    Type: Application
    Filed: November 26, 2018
    Publication date: May 9, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Yi Jin Jung, Yu Ra Jeong, Chul Haeng Lee, Young Min Lim
  • Publication number: 20190131617
    Abstract: A negative electrode for a lithium metal battery, a method for manufacturing the same, and a lithium metal battery having the same. Formation of lithium dendrite may be prevented by forming a dielectric layer on the surface of lithium metal, and thus improve lifespan characteristics and electrochemical performance when applied to a lithium metal battery.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 2, 2019
    Applicants: LG CHEM, LTD., POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Kyoung Ho AHN, Byoung Woo KANG, Chul Haeng LEE, Solji PARK, Min Kyu KIM, Won Tae LEE
  • Patent number: 10276893
    Abstract: The present invention relates to a composition for a gel polymer electrolyte comprising a liquid electrolyte solvent, a lithium salt, a polymerization initiator, and a mixed compound of a first compound and a second compound, and a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and a gel polymer electrolyte, wherein the gel polymer electrolyte is formed by polymerizing the composition for a gel polymer electrolyte. By comprising a mixed compound of a first compound and a second compound in which the first compound is an amine-based compound comprising polyethylene glycol as a functional group and the second compound is an epoxy-based compound, a composition for a gel polymer electrolyte of the present invention exhibits, when used in a lithium secondary battery, enhanced battery lifespan, excellent high temperature storability, and enhanced battery capacity property by readily inducing a hopping phenomenon.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: April 30, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Jeong Woo Oh, Chul Haeng Lee, Yi Jin Jung
  • Patent number: 10276894
    Abstract: The present invention provides a lithium secondary battery comprising a non-aqueous liquid electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated benzene-based compound as additives, a positive electrode comprising a lithium-nickel-manganese-cobalt-based oxide as a positive electrode active material, a negative electrode, and a separator. With the non-aqueous liquid electrolyte for a lithium secondary battery of the present invention, a solid SEI film is formed on a negative electrode when initially charging a lithium secondary battery comprising the non-aqueous liquid electrolyte, and an output property of the lithium secondary battery is improved, and an output property and stability after high temperature storage are capable of being enhanced as well.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 30, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Chul Haeng Lee, Shul Kee Kim, Gwang Yeon Kim, Doo Kyung Yang
  • Publication number: 20190115616
    Abstract: The present invention relates to a composition for a polymer electrolyte and a lithium secondary battery using the same, and particularly, to a composition for a polymer electrolyte which includes a single ion-conductive polymer including a unit represented by Chemical Formula 1; and at least one additive selected from the group consisting of a ceramic electrolyte and inorganic particles, wherein a weight ratio of the single ion-conductive polymer:the additive(s) is 1:0.1 to 1:9, and a lithium secondary battery which exhibits an improvement in cell performance by including the same.
    Type: Application
    Filed: November 7, 2018
    Publication date: April 18, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Jeong Woo Oh, Jung Hoon Lee, Chul Haeng Lee