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    Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same
    3.
    发明授权
    Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising the same 有权

    公开(公告)号：US10541445B2

    公开(公告)日：2020-01-21

    申请号：US15332273

    申请日：2016-10-24

    Applicant: LG Chem, Ltd.

    Inventor： Sung Hoon Yu ,  Yoo Sun Kang ,  Kyung Mi Lee

    IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0525

    Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution including a compound represented by Formula 1 below, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution. NC—(R)n—CN  [Formula 1] (in Formula 1, R is a cycloalkylene group having 3 to 6 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, a haloalkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, or an alkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted, and n is an integer of 1 to 5.)

    Lithium secondary battery
    4.
    发明授权
    Lithium secondary battery 有权

    公开(公告)号：US10297860B2

    公开(公告)日：2019-05-21

    申请号：US14247679

    申请日：2014-04-08

    Applicant: LG Chem, Ltd.

    Inventor： Sung Hoon Yu ,  Yoo Sun Kang ,  Kyung Mi Lee ,  Jin Hyun Park ,  Jung Don Suk ,  Doo Kyung Yang

    IPC: H01M10/0565 ,  H01M10/052 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/058

    Abstract: Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein i) the anode includes a silicon (Si)-based anode active material, ii) the gel polymer electrolyte is formed by polymerizing a composition that includes a monomer having a functional group bondable to metal ions, and iii) a charge voltage of the battery is in a range of 3.0 V to 5.0 V.Since the lithium secondary battery of the present invention may prevent the movement of metal ions dissolved from a cathode to an anode or reduce the precipitation of metal on the anode, the lifetime of the battery may not only be improved but capacity characteristics of the battery may also be excellent even in the case in which the battery is charged at a high voltage as well as normal voltage.

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