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).

  • GEL POLYMER ELECTROLYTE COMPOSITION, GEL POLYMER ELECTROLYTE PREPARED THEREBY, AND LITHIUM SECONDARY BATTERY INCLUDING THE GEL POLYMER ELECTROLYTE
    Publication number: 20200295402
    Abstract: The present invention relates to a gel polymer electrolyte composition and a lithium secondary battery including the same, and particularly, to a gel polymer electrolyte composition, in which flame retardancy is improved by including an ionic liquid, instead of a non-aqueous organic solvent, as well as a lithium salt, a polymerization initiator, and an oligomer having a specific structure, and a lithium secondary battery in which high-temperature stability is improved by including the same.
    Type: Application
    Filed: January 3, 2019
    Publication date: September 17, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE
  • Non-aqueous electrolyte solution and lithium secondary battery including the same
    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
  • GEL POLYMER ELECTROLYTE COMPOSITION AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20200274197
    Abstract: The present invention relates to a gel polymer electrolyte composition for a lithium secondary battery, a gel polymer electrolyte prepared by polymerizing the same, and a secondary battery including the gel polymer electrolyte, 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 flame retardant, and a polymerization initiator, a gel polymer electrolyte formed by polymerizing the gel polymer electrolyte composition in an inert atmosphere, and a lithium secondary battery in which flame retardancy and high-temperature stability are improved by including the gel polymer electrolyte.
    Type: Application
    Filed: November 30, 2018
    Publication date: August 27, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Won Kyung SHIN, Kyoung Ho AHN, Chul Haeng LEE, Jung Hoon LEE
  • Polymer electrolyte for secondary battery and secondary battery including the same
    Patent number: 10749210
    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: Grant
    Filed: October 30, 2017
    Date of Patent: August 18, 2020
    Assignee: LG Chem, Ltd.
    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 the same
    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
  • Non-aqueous electrolyte and lithium secondary battery including the same
    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
  • Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    Publication number: 20200251777
    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, a non-aqueous solvent including a carbonate-based solvent and propyl propionate, and a compound represented by Formula 1. In some embodiments, the carbonate-based solvent is ethylene carbonate.
    Type: Application
    Filed: November 22, 2018
    Publication date: August 6, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Kyung Mi Lee, Chul Haeng Lee
  • COMPOSITION FOR GEL POLYMER ELECTROLYTES, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    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
  • Composition for gel polymer electrolyte and lithium secondary battery including the same
    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
  • Lithium Secondary Battery Having Improved High-Temperature Storage Characteristics
    Publication number: 20200243898
    Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution, wherein the positive electrode includes a positive electrode active material represented by Formula 1, and the non-aqueous electrolyte solution includes a non-aqueous organic solvent, a first lithium salt, lithium bis(fluorosulfonyl)imide as a second lithium salt, and an additive, wherein a molar ratio of the first lithium salt to the second lithium salt is in a range of 1:0.01 to 1:1, and the additive is a mixed additive which includes fluorobenzene, tetravinylsilane, and tertiary butylbenzene in a weight ratio of 1:0.05:0.1 to 1:1:1.5. Li(NiaCobMnc)O2??[Formula 1] (in Formula 1, 0.65<a?0.9, 0.05?b<0.2, 0.05?c<0.2, and a+b+c=1.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 30, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee
  • POLYMER ELECTROLYTE FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20200235428
    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 unit A derived from a poly(ethylene oxide)-based polymer, and a lithium secondary battery including the same.
    Type: Application
    Filed: August 31, 2018
    Publication date: July 23, 2020
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Chul Haeng Lee, Jun Hyeok Han
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME
    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
  • Gel polymer electrolyte and lithium secondary battery including the same
    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
  • Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
    Publication number: 20200220216
    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, a non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and an additive, wherein the additive is a mixed additive which includes lithium difluorophosphate, fluorobenzene, tetravinylsilane, and a compound containing one sulfonate group or sulfate group in a weight ratio of 1:2:0.05:0.5 to 1:8:0.3:2.
    Type: Application
    Filed: November 13, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ha Eun Kim, Young Min Lim, Gwang Yeon Kim, Chul Haeng Lee
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE, AND GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    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
  • COMPOSITION FOR GEL POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE PREPARED THEREFROM, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
    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
  • Polymer electrolyte and lithium secondary battery including the same
    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
  • Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same
    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
  • Polymer Electrolyte for Secondary Battery and Lithium Secondary Battery Including the Same
    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
  • Electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same
    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