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    Gel polymer electrolyte and lithium secondary battery comprising the same
    2.
    发明授权
    Gel polymer electrolyte and lithium secondary battery comprising the same 有权

    公开(公告)号：US10276893B2

    公开(公告)日：2019-04-30

    申请号：US15516146

    申请日：2015-10-01

    Applicant: LG Chem, Ltd.

    Inventor： Sol Ji Park ,  Kyoung Ho Ahn ,  Jeong Woo Oh ,  Chul Haeng Lee ,  Yi Jin Jung

    IPC: C08G73/02 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565

    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.

    Lithium secondary battery having high-temperature storage properties and method for manufacturing the same
    3.
    发明授权
    Lithium secondary battery having high-temperature storage properties and method for manufacturing the same 有权

    公开(公告)号：US10985412B2

    公开(公告)日：2021-04-20

    申请号：US16342067

    申请日：2018-02-02

    Applicant: LG Chem, Ltd.

    Inventor： Jung Min Lee ,  Young Min Lim ,  Chul Haeng Lee ,  Yu Ha An ,  Yi Jin Jung ,  Yeon Ji Oh

    IPC: H01M10/44 ,  H01M10/0525 ,  H01M10/04 ,  H01M10/0567 ,  H01M10/052 ,  H01M10/42

    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-trifluorobenzene as an additive, wherein the 1,2,3-trifluorobenzene 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.

    GEL POLYMER ELECTROLYTE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME
    5.
    发明申请
    GEL POLYMER ELECTROLYTE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME 审中-公开
    凝胶聚合物电解质和电化学装置，包括它们

    公开(公告)号：US20160028111A1

    公开(公告)日：2016-01-28

    申请号：US14423592

    申请日：2014-10-31

    Applicant: LG Chem, Ltd.

    Inventor： Kyoung Ho Ahn ,  Jeong Woo Oh ,  Yi Jin Jung ,  Doo Kyung Yang ,  Min Jung Kim

    IPC: H01M10/0565 ,  H01M10/052

    CPC classification number: H01M10/0565 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/4235 ,  H01M2220/30 ,  H01M2300/0028 ,  H01M2300/0085

    Abstract: The present invention provides a gel polymer electrolyte obtained by polymerizing and gelling a composition for a gel polymer including an organic solvent, an electrolyte salt and a first polymerizable monomer, wherein the gel polymer electrolyte further comprises a compound represented by the following Formula 1 as a first additive: where R1 to R3 are independently hydrogen, an alkyl group having 1 to 5 carbon atoms, an aryl group having 5 to 7 carbon atoms, or a fluorine substituted alkyl group having 1 to 5 carbon atoms, or at least two substituents selected from R1 to R3 are coupled or connected to each other to form a cycle group having a ring atom composed of 2 to 6 carbon atoms or a heterocyclic group having a ring atom composed of 2 to 8 carbon atoms and 1 to 3 oxygen hetero atoms.

    Abstract translation: 本发明提供一种凝胶聚合物电解质，其通过使包含有机溶剂，电解质盐和第一可聚合单体的凝胶聚合物的组合物聚合和胶凝而获得，其中凝胶聚合物电解质还包含由下式1表示的化合物作为 第一添加剂：其中R 1至R 3独立地为氢，具有1至5个碳原子的烷基，具有5至7个碳原子的芳基或具有1至5个碳原子的氟取代的烷基，或至少两个选自 从R 1到R 3相互连接或连接形成具有2〜6个碳原子的环原子的环状基团或具有2〜8个碳原子和1〜3个氧原子的环原子的杂环基。

    Gel polymer electrolyte and electrochemical device including the same
    7.
    发明授权
    Gel polymer electrolyte and electrochemical device including the same 有权

    公开(公告)号：US10355309B2

    公开(公告)日：2019-07-16

    申请号：US14423592

    申请日：2014-10-31

    Applicant: LG Chem, Ltd.

    Inventor： Kyoung Ho Ahn ,  Jeong Woo Oh ,  Yi Jin Jung ,  Doo Kyung Yang ,  Min Jung Kim

    IPC: H01M10/0565 ,  H01M10/052 ,  H01M10/42 ,  H01M10/0567

    Abstract: The present invention provides a gel polymer electrolyte obtained by polymerizing and gelling a composition for a gel polymer including an organic solvent, an electrolyte salt and a first polymerizable monomer, wherein the gel polymer electrolyte further comprises a compound represented by the following Formula 1 as a first additive: where R1 to R3 are independently hydrogen, an alkyl group having 1 to 5 carbon atoms, an aryl group having 5 to 7 carbon atoms, or a fluorine substituted alkyl group having 1 to 5 carbon atoms, or at least two substituents selected from R1 to R3 are coupled or connected to each other to form a cycle group having a ring atom composed of 2 to 6 carbon atoms or a heterocyclic group having a ring atom composed of 2 to 8 carbon atoms and 1 to 3 oxygen hetero atoms.

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