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: 20200220212
    Abstract: The present invention provides a composition for a gel polymer electrolyte, including an oligomer represented by Formula 1; a polymerization initiator; a non-aqueous solvent; and a lithium salt, and a gel polymer electrolyte and a lithium secondary battery including the same.
    Type: Application
    Filed: November 28, 2018
    Publication date: July 9, 2020
    Inventors: Kyoung Ho Ahn, Jung Hoon Lee, Jae Won Lee, Chul Haeng Lee
  • Patent number: 10700381
    Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte solution for a lithium secondary battery which includes an ionizable lithium salt, an organic solvent, and an additive, wherein the additive includes tetravinylsilane, lithium difluorophosphate, and 1,3-propylene sulfate in a weight ratio of 1:3 to 20:3 to 20, and a total amount of the additive is in a range of 1 wt % to 4 wt % based on a total weight of the non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: June 30, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Ha Eun Kim, Young Min Lim, Gwang Yeon Kim, Chul Haeng Lee
  • Patent number: 10700379
    Abstract: The present invention relates to a polymer electrolyte, which includes a lithium salt and a copolymer including a fluorine-substituted or unsubstituted polyalkylene ether repeating unit, and a lithium secondary battery including the same.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: June 30, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Sol Ji Park, Jung Hoon Lee, Chul Haeng Lee
  • Publication number: 20200203762
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery including the same, and to a polymer electrolyte for a secondary battery, which includes a first polymer including a repeating unit represented by Formula 1, and a second polymer including a repeating unit derived from a monomer having at least one ethylenically unsaturated group or an oligomer thereof, and a lithium secondary battery including the same.
    Type: Application
    Filed: July 26, 2018
    Publication date: June 25, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Chul Haeng Lee, Jun Hyeok Han
  • Patent number: 10693179
    Abstract: The present invention relates to an electrolyte solution for a lithium secondary battery that includes an additive for forming a stable SEI film and a protective layer on a surface of an electrode to prevent a chemical reaction between the electrolyte solution and the electrode, and a lithium secondary battery having improved life characteristics and high-temperature stability by including the same.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: June 23, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Chul Haeng Lee, Yi Jin Jung, Jung Hoon Lee
  • Publication number: 20200194832
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery comprising the same, and particularly, to a polymer electrolyte for a secondary battery, in which mechanical properties, ionic conductivity, and electrical conductivity are improved by comprising a polymer and an electron-acceptor having at least one double bond, as a dopant, and a lithium secondary battery in which electrochemical stability at high temperature and high voltage is enhanced by comprising the polymer electrolyte.
    Type: Application
    Filed: July 3, 2018
    Publication date: June 18, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Publication number: 20200185771
    Abstract: The present invention relates to a thermosetting electrolyte composition for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a thermosetting electrolyte composition for a lithium secondary battery, which includes LiPF6 as a first lithium salt, a non-aqueous organic solvent, and a polymer or oligomer containing a unit represented by Formula 1, wherein the polymer or oligomer containing the unit represented by Formula 1 is included in an amount of 0.6 wt % to 15 wt % based on a total weight of the thermosetting electrolyte composition for a lithium secondary battery, and a lithium secondary battery including the same.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 11, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jae Won LEE, Kyoung Ho AHN, Chul Haeng LEE, Jung Hoon LEE, Won Kyung SHIN
  • Publication number: 20200168950
    Abstract: The present invention provides a polymer electrolyte for a secondary battery, which may secure high ionic conductivity and mechanical strength, and a lithium secondary battery including the same.
    Type: Application
    Filed: November 26, 2018
    Publication date: May 28, 2020
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Chul Haeng Lee, Jun Hyeok Han
  • Patent number: 10629956
    Abstract: The present invention relates to a method of preparing a lithium secondary battery which includes preparing a lithium secondary battery, which includes an electrode assembly including a positive electrode, a separator, and a negative electrode, a non-aqueous electrolyte solution, in which the electrode assembly is impregnated, and a battery case accommodating the electrode assembly and the non-aqueous electrolyte solution; performing formation on the lithium secondary battery by charging and discharging the lithium secondary battery; and degassing, wherein the positive electrode includes a positive electrode active material and carbon nanotubes as a conductive agent, the non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and monofluorobenzene as an additive, and the performing of the formation is performed by charging to a state of charge (SOC) of 65% to 80% while applying a pressure of 0.5 kgf/cm2 to 5 kgf/cm2 at 60° C. to 80° C.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: April 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Min Lee, Young Min Lim, Chul Haeng Lee, Yu Ha An, Yi Jin Jung
  • Patent number: 10615450
    Abstract: The present invention provides an electrolyte solution for a lithium secondary battery including an additive, which may prevent a chemical reaction between the electrolyte solution and an electrode by forming a stable solid electrolyte interface (SEI) and a protection layer on the surface of the electrode, and a lithium secondary battery in which life characteristics and high-temperature stability are improved by including the same.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: April 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Yu Ra Jeong, Chul Haeng Lee, Young Min Lim, Jeong Woo Oh, Jung Hoon Lee
  • Patent number: 10601076
    Abstract: The present invention relates to a composition for a gel polymer electrolyte and a gel polymer electrolyte prepared using the same, and specifically provides a composition for a gel polymer electrolyte including a lithium salt, an organic solvent, and a polymer A having an epoxy group represented by Formula 1, and a polymer B having an amine group and a cyanide group represented by Formula 2, wherein the polymers A and B are included in an amount of 1 to 20 wt % based on the total weight of the composition for a gel polymer electrolyte, and wherein a gel polymer electrolyte for a secondary battery can be prepared that includes a polymer network formed by combining the polymer A having an epoxy group represented by Formula 1 and the polymer B having an amine group and a cyanide group represented by Formula 2 in a three-dimensional structure.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 24, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Ho Ahn, Jung Hoon Lee, Chul Haeng Lee, Jeong Woo Oh, Yi Jin Jung, Sol Ji Park
  • Publication number: 20200075997
    Abstract: A non-aqueous electrolyte solution for a lithium secondary battery, and a lithium second battery including the same are disclosed herein. In some embodiments, the lithium eletrotrolyte includes lithium bis(fluorosulfonyl)imide as a first lithium salt, a second lithium salt, an organic solvent, and a compound represented by Formula 1. In some embodiments, the lithium second battery includes a positive electrode having a positive electrode active material represented by Formula 2.
    Type: Application
    Filed: November 23, 2018
    Publication date: March 5, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Yeong Lee, Chul Haeng Lee, Sung Hoon Yu, Hyun Seung Kim
  • Publication number: 20200058960
    Abstract: An additive, a non-aqueous electrolyte for a lithium secondary battery including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an additive includes at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2. In some embodiments, a non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive including at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2.
    Type: Application
    Filed: November 20, 2018
    Publication date: February 20, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Chul Haeng Lee, Yoo Sun Kang
  • Publication number: 20200052322
    Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In an embodiment, the electrolyte solution includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, lithium difluorophosphate (LiDFP) as a second additive, wherein the first additive and the second additive are each independently included in an amount of 0.01 wt % to 8.5 wt % based on a total amount of the non-aqueous electrolyte solution. The first additive has metal ion adsorbability and is capable of forming a stable ion conductive film on the surface of an electrode, and a lithium secondary battery in which an abnormal voltage drop phenomenon is improved by including the same.
    Type: Application
    Filed: September 20, 2018
    Publication date: February 13, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Chul Haeng Lee, Hyun Seung Kim
  • Publication number: 20200052331
    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 non-lithiated additive.
    Type: Application
    Filed: March 16, 2018
    Publication date: February 13, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee, Ha Eun Kim
  • Patent number: 10553903
    Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to an electrolyte for a lithium secondary battery, which includes a lithium salt, an organic solvent, and an oligomer represented by Formula 1 described in the present specification, and a lithium secondary battery in which overall performance is improved by suppressing reactivity with lithium metal by including the electrolyte.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: February 4, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee, Jung Hoon Lee
  • Patent number: 10541447
    Abstract: The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte solution for a lithium secondary battery which includes an ionizable lithium salt, an organic solvent, and an additive, wherein the additive is a mixed additive which includes lithium difluorophosphate, tertiary alkylbenzene, and tetra-vinyl silane in a weight ratio of 1:1 to 4:0.05 to 0.5, and the additive is included in an amount of 2.5 wt % to 4.5 wt % based on a total weight of the non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Gwang Yeon Kim, Young Min Lim, Ha Eun Kim, Chul Haeng Lee
  • Publication number: 20200014064
    Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.
    Type: Application
    Filed: October 30, 2017
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Publication number: 20190379087
    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: Application
    Filed: November 1, 2018
    Publication date: December 12, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Jun Hyeok Han, Chul Haeng Lee
  • Publication number: 20190356021
    Abstract: An electrolyte for a lithium secondary battery 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 by simultaneously including lithium bis(fluorosulfonyl)imide (LiFSI) and a second lithium salt, as a lithium salt, while including a second additive as well as a novel borate-based lithium compound, as an additive.
    Type: Application
    Filed: March 16, 2018
    Publication date: November 21, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee, Kyung Mi Lee