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).

  • Method for manufacturing electrochemical device using pretreatment discharge
    Patent number: 11233273
    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: Grant
    Filed: September 3, 2018
    Date of Patent: January 25, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jun-Hyeok Han, Kyoung-Ho Ahn, Sol-Ji Park, Chul-Haeng Lee
  • Electrolyte For Lithium Secondary Battery And Lithium Secondary Battery Including The Same
    Publication number: 20220021030
    Abstract: An electrolyte for a lithium secondary battery, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte for a lithium secondary battery includes a lithium salt having a molar concentration of 1.5 M to 2.0 M, an oligomer containing a unit represented by Formula 1 and having an acrylate group at an end thereof, a first additive represented by Formula 2, and an organic solvent.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 20, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Gwang Yeon Kim, Jeong Woo Oh, Chul Haeng Lee, Hyung Tae Kim
  • Non-Aqueous Electrolyte for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    Publication number: 20220021029
    Abstract: A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte for a lithium secondary battery includes an organic solvent, a lithium salt, and a compound represented by Formula 1. In some embodiments, the compound represented by Formula 1 is present in an amount of 0.5 part by weight to 5 parts by weight based on 100 parts by weight of the non-aqueous electrolyte.
    Type: Application
    Filed: April 24, 2020
    Publication date: January 20, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Jeong Woo Oh, Chul Haeng Lee, Yoo Sun Kang
  • Non-Aqueous Electrolyte Solution For Lithium Secondary Battery And Lithium Secondary Battery Including The Same
    Publication number: 20220006121
    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 includes a lithium salt, an organic solvent, a first additive, and a second additive, wherein the first additive is lithium 4,5-dicyano-2-(trifluoromethyl)imidazolide, and the second additive is tetravinylsilane.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hyun Seung Kim, Chul Haeng Lee, Yu Ha An, Jeong Woo Oh
  • Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same
    Patent number: 11183711
    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: Grant
    Filed: September 20, 2018
    Date of Patent: November 23, 2021
    Inventors: Sung Hoon Yu, Chul Haeng Lee, Hyun Seung Kim
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY INCLUDING GEL POLYMER ELECTROLYTE FORMED THEREFROM
    Publication number: 20210359342
    Abstract: The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including a gel polymer electrolyte formed therefrom, and particularly, to a composition for a gel polymer electrolyte, which includes a lithium salt, a non-aqueous organic solvent including a glyme-based solvent, an oligomer represented by Formula 1 and having a polymerizable substituent, and a polymerization initiator, and a lithium secondary battery including a gel polymer electrolyte prepared by polymerization of the composition.
    Type: Application
    Filed: September 20, 2019
    Publication date: November 18, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sol Ji PARK, Kyoung Ho AHN, Jun Hyeok HAN, Chul Haeng LEE
  • METHOD OF PREPARING ELECTRODE FOR LITHIUM SECONDARY BATTERY AND ELECTRODE FOR LITHIUM SECONDARY BATTERY PREPARED BY USING THE SAME
    Publication number: 20210359287
    Abstract: The present invention provides a method of preparing an electrode for a lithium secondary battery which includes forming a first electrolyte layer by immersing an electrode current collector in a composition for forming the first electrolyte layer and applying a current, and forming a second electrolyte layer by immersing the electrode current collector having the first electrolyte layer formed thereon in a composition for forming the second electrolyte layer and applying a current, wherein one of the composition for forming the first electrolyte layer and the composition for forming the second electrolyte layer is a composition for forming an organic electrolyte layer, and another one is a composition for forming an inorganic electrolyte layer, and the composition for forming an inorganic electrolyte layer includes a compound represented by Formula 1.
    Type: Application
    Filed: October 18, 2019
    Publication date: November 18, 2021
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Sol Ji PARK, Kyoung Ho AHN, Jun Hyeok HAN, Chul Haeng LEE
  • Electrolyte Solution For Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    Publication number: 20210328266
    Abstract: An electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution includes a lithium salt, an additive including a compound represented by Formula 1, and an organic solvent. In some embodiments, the lithium secondary battery includes a positive electrode, a negative electrode which includes a negative electrode active material containing SiOx (0<x?2), a separator, and the electrolyte solution.
    Type: Application
    Filed: December 17, 2019
    Publication date: October 21, 2021
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hyun Seung Kim, Chul Haeng Lee, Yu Ha An, Jeong Woo Oh
  • Electrolyte for lithium secondary battery and lithium secondary battery including the same
    Patent number: 11139507
    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: Grant
    Filed: March 16, 2018
    Date of Patent: October 5, 2021
    Inventors: Young Min Lim, Chul Haeng Lee, Kyung Mi Lee
  • Method of Manufacturing Negative Electrode for Lithium Secondary Battery and Negative Electrode for Lithium Secondary Battery Manufactured Using the Same
    Publication number: 20210288346
    Abstract: Provided are a method of manufacturing a negative electrode for a lithium secondary battery, which includes: preparing a working electrode including a metal thin film; preparing a composition for forming a first solid electrolyte layer including an additive including at least one salt selected from salts represented by Chemical Formula 1 to Chemical Formula 5 and a glyme-based solvent; fabricating a half-cell including the working electrode, a counter electrode, a reference electrode, and the composition for forming a first solid electrolyte layer; forming a first solid electrolyte layer on the working electrode by operating the half-cell; and separating the working electrode on which the first solid electrolyte layer has been formed, and a negative electrode for a lithium secondary battery manufactured by the above-described method.
    Type: Application
    Filed: August 14, 2019
    Publication date: September 16, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Chul Haeng Lee, Jun Hyeok Han
  • Polymer electrolyte for secondary battery and lithium secondary battery comprising the same
    Patent number: 11114692
    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: Grant
    Filed: July 3, 2018
    Date of Patent: September 7, 2021
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY INCLUDING GEL POLYMER ELECTROLYTE FORMED THEREFROM
    Publication number: 20210257659
    Abstract: The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including a gel polymer electrolyte formed therefrom, and particularly, to a composition for a gel polymer electrolyte, which includes a lithium salt, an organic solvent, an oligomer represented by Formula 1 and having a polymerizable substituent, a compound represented by Formula 2 and having a crosslinking reactive group, and a polymerization initiator, and a lithium secondary battery including a gel polymer electrolyte prepared by polymerization of the composition.
    Type: Application
    Filed: September 20, 2019
    Publication date: August 19, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sol Ji PARK, Kyoung Ho AHN, Chul Haeng LEE, Min Jung KIM, Jae Won LEE
  • THERMOSETTING ELECTROLYTE COMPOSITION FOR LITHIUM SECONDARY BATTERY, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTROLYTE
    Publication number: 20210257660
    Abstract: The present invention relates to a thermosetting electrolyte composition for a lithium secondary battery, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a thermosetting electrolyte composition for a lithium secondary battery, which includes LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, a non-aqueous organic solvent, and a polymer or oligomer containing a unit represented by Formula 1, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte.
    Type: Application
    Filed: September 10, 2019
    Publication date: August 19, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Kyoung Ho AHN, Jung Hoon LEE, Won Kyung SHIN, Jae Won LEE, Sol Ji PARK, Chul Haeng LEE
  • Non-aqueous electrolyte solution additive, and non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery which include the same
    Patent number: 11081729
    Abstract: The present invention relates to a non-aqueous electrolyte solution additive, and a non-aqueous electrolyte solution for a lithium-ion battery and a lithium-ion battery which include the same, and particularly, to a non-aqueous electrolyte solution, which may remove an acid generated by the decomposition of a lithium salt while being able to suppress the dissolution of metal impurities causing failure in the battery by using and including a Lewis base compound containing a propargyl group as a non-aqueous electrolyte solution additive for a lithium-ion battery, and a lithium secondary battery in which transition metal dissolution in a positive electrode and a low-voltage phenomenon are improved.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: August 3, 2021
    Inventors: Hyun Seung Kim, Sung Hoon Yu, Jeong Woo Oh, Chul Haeng Lee
  • THERMOSETTING ELECTROLYTE COMPOSITION FOR LITHIUM SECONDARY BATTERY, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTROLYTE
    Publication number: 20210218058
    Abstract: The present invention relates to a thermosetting electrolyte composition for a lithium secondary battery, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a thermosetting electrolyte composition for a lithium secondary battery, which includes LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, a non-aqueous organic solvent, and a polymer or oligomer containing a unit represented by Formula 1, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte.
    Type: Application
    Filed: September 10, 2019
    Publication date: July 15, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Kyoung Ho AHN, Jung Hoon LEE, Won Kyung SHIN, Jae Won LEE, Sol Ji PARK, Chul Haeng LEE
  • Electrolyte additive and non-aqueous electrolyte solution for lithium secondary battery comprising the same
    Patent number: 11063296
    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: Grant
    Filed: July 3, 2018
    Date of Patent: July 13, 2021
    Inventors: Young Min Lim, Chul Haeng Lee, Kyung Mi Lee
  • Electrolyte for Lithium Secondary Battery
    Publication number: 20210210787
    Abstract: An electrolyte for a lithium secondary battery is disclosed herein. In some embodiments, an electrolyte includes a lithium salt present in a concentration of 1.6 M to 5 M, an oligomer mixture including a first oligomer containing a unit represented by Formula 1 and a second oligomer containing a unit represented by Formula 2, and an organic solvent.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 8, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Won Kyung Shin, Kyoung Ho Ahn, Chul Haeng Lee, Min Jung Kim, Jung Hoon Lee
  • Electrolyte for Lithium Secondary Battery
    Publication number: 20210202993
    Abstract: An electrolyte for a lithium secondary battery is disclosed herein. In some embodiments, an electrolyte which includes a lithium salt having a concentration of 1.6 M to 5 M, an oligomer mixture which includes a first oligomer containing a unit represented by Formula 1 and a second oligomer containing a unit represented by Formula 2, and an organic solvent.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 1, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Won Kyung Shin, Kyoung Ho Ahn, Chul Haeng Lee, Min Jung Kim, Jae Won Lee
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20210194052
    Abstract: The present invention provides a composition for a gel polymer electrolyte, a gel polymer electrolyte prepared using the same, and a lithium secondary battery, the composition including: an oligomer represented by Formula 1, an additive, a polymerization initiator, a lithium salt, and a non-aqueous solvent. The additive includes at least one compound selected from the group consisting of an imide-based compound, a compound having a Si—N-based bond, a nitrile-based compound, a phosphate-based compound, and a borate-based compound.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 24, 2021
    Inventors: Jeong Woo Oh, Kyoung Ho Ahn, Chul Haeng Lee, Jung Hoon Lee
  • POUCH EXTERIOR MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING SAME
    Publication number: 20210184299
    Abstract: The present invention relates to a pouch exterior material which is for a lithium secondary battery and includes an inner layer, an outer resin layer, and a metal layer located between the inner layer and the outer resin layer, wherein the inner layer contains an ethylenically unsaturated group, and a lithium secondary battery including the pouch exterior material.
    Type: Application
    Filed: March 8, 2019
    Publication date: June 17, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE, Jeong Woo OH