Patents by Inventor Jeong Woo Oh

Jeong Woo Oh 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: 20210135284
    Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: a first oligomer represented by Formula 1; a second oligomer including a first repeating unit which is represented by Formula 2a and derived from a styrene monomer; a polymerization initiator; a lithium salt; and a non-aqueous solvent, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.
    Type: Application
    Filed: November 30, 2018
    Publication date: May 6, 2021
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Jeong Woo Oh, Chul Haeng Lee
  • Patent number: 10950895
    Abstract: An electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In an embodiment, an electrolyte for a lithium secondary battery includes a lithium salt, an organic solvent, and an oligomer represented by Formula 1 described in the present specification or a polymer derived from the oligomer represented by Formula 1. A lithium secondary battery including the electrolyte for a lithium secondary battery is improved by suppressing reactivity of lithium metal.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: March 16, 2021
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Jun Hyeok Han, Chui Haeng Lee
  • 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: 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
  • 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: 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
  • 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: 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: 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: 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: 20200321615
    Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium battery includes a positive electrode having a lithium-nickel-cobalt-manganese-based electrode active material wherein nickel has a content of 80 mol % or greater, relative to the other transition metals, a negative electrode including a silicon-based negative electrode active material, a separator, and a non-aqueous electrolyte solution including a non-aqueous organic solvent and a lithium salt, the lithium salt being contained in a concentration of 1.8 M to 5 M, and wherein the lithium salt includes LiPF6 and a lithium bis(fluorosulfonyl)imide.
    Type: Application
    Filed: May 10, 2019
    Publication date: October 8, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Won Kyung Shin, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh, Min Jung Kim
  • Patent number: 10790541
    Abstract: The present invention relates to a composition for a gel polymer electrolyte, in which liquid injection characteristics at room temperature and in an oxygen atmosphere are improved by including a non-fluoride oxygen scavenger as well as a polymerizable oligomer having a polymerizable substituent, and a lithium secondary battery in which capacity retention with cycles is excellent by including a gel polymer electrolyte which is formed by using the composition.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 29, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee
  • Patent number: 10777849
    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: Grant
    Filed: January 12, 2018
    Date of Patent: September 15, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
  • Patent number: 10741878
    Abstract: The present invention relates to a non-aqueous electrolyte for lithium secondary battery, and more particularly, to a non-aqueous electrolyte including a lithium salt having a concentration of 4.1 M or more, an organic solvent, and a surfactant.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: August 11, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Yu Ra Jeong, Kyoung Ho Ahn, Jeong Woo Oh, Sol Ji Park, Chul Haeng Lee
  • Patent number: 10741874
    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: Grant
    Filed: January 12, 2018
    Date of Patent: August 11, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
  • Publication number: 20200251776
    Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: an oligomer represented by Formula 1; an additive; a polymerization initiator; a lithium salt; and a non-aqueous solvent, the additive including at least one compound selected from the group consisting of a substituted or unsubstituted phosphate-based compound and a substituted or unsubstituted benzene-based compound, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.
    Type: Application
    Filed: November 30, 2018
    Publication date: August 6, 2020
    Inventors: Jung Hoon Lee, Kyoung Ho Ahn, Chul Haeng Lee, Jeong Woo Oh
  • Patent number: 10734678
    Abstract: The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including the same, and more specifically, an objective of the present invention is to provide a secondary battery in which, since an isocyanate-containing monomer is introduced to a composition for a gel polymer electrolyte to induce a urethane reaction with LiOH on a surface of a lithium transition metal oxide to form a coating layer including a urethane bond-containing oligomer on the surface of the lithium transition metal oxide, and thereby side reactions caused by HF in the battery are minimized, capacity characteristics are improved, and adhesion between a positive electrode and a separator is enhanced to minimize the swelling phenomenon of the battery.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: August 4, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee, Yi Jin Jung, Sol Ji Park
  • Publication number: 20200227781
    Abstract: The present invention relates to a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared using the same and an electrochemical device including the same, and specifically provides a composition for a gel polymer electrolyte including an oligomer which includes a compound represented by Formula 1 and a compound represented by Formula 2, provides a gel polymer electrolyte prepared using the same, and provides an electrochemical device including the same.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Jung Hoon Lee, Chul Haeng Lee, Jeong Woo Oh, Sol Ji Park
  • Patent number: 10714791
    Abstract: The present invention relates to a gel polymer electrolyte, which includes a matrix polymer and an electrolyte solution impregnated in the matrix polymer, wherein the matrix polymer is formed in a three-dimensional network structure by polymerizing a first oligomer which includes unit A represented by Formula 1 and unit B having a crosslinkable functional group derived from a compound including at least one copolymerizable acrylate group, and a lithium secondary battery including the same.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: July 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Jung Hoon Lee, Jeong Woo Oh, Chul Haeng Lee
  • Publication number: 20200220211
    Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including a first oligomer represented by Formula 1, a second oligomer including a first repeating unit represented by Formula 2a derived from a styrene monomer, a polymerization initiator, a lithium salt, and a non-aqueous solvent. The present invention also provides a gel polymer electrolyte prepared using the same, and a lithium secondary battery.
    Type: Application
    Filed: November 30, 2018
    Publication date: July 9, 2020
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee, Jung Hoon Lee