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    RECHARGEABLE LITHIUM BATTERY
    1.
    发明申请
    RECHARGEABLE LITHIUM BATTERY 审中-公开

    公开(公告)号：US20200350574A1

    公开(公告)日：2020-11-05

    申请号：US16862779

    申请日：2020-04-30

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Jaehwan HA ,  Kijun KIM ,  Heeeun YOO ,  Yeonhee YOON ,  Kyuseo LEE ,  Dongmyung LEE

    IPC: H01M4/505 ,  H01M2/16 ,  H01M4/62 ,  H01M4/525 ,  H01M4/60 ,  H01M4/131 ,  H01M4/136 ,  H01M4/58

    Abstract: A rechargeable lithium battery includes an electrode laminate including a positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector; a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer; and a separator, wherein the electrode laminate has a ratio (L/W) of a height (L), which is a length in a protruding direction of an electrode terminal, relative to a width (W), which is perpendicular to the protruding direction of the electrode terminal and parallel to the laminate surface, is about 1.1 to about 2.3, the positive active material layer includes a first positive active material including at least one of a composite oxide of a metal selected from cobalt, manganese, nickel, and a combination thereof and lithium and a second positive active material including a compound represented by Chemical Formula 1, the negative electrode functional layer includes flake-shaped polyethylene particles, and an operation voltage is greater than or equal to about 4.3 V. LiaFe1-x1Mx1PO4   [Chemical Formula 1] In Chemical Formula 1, 0.90≤a≤1.8, 0≤x1≤0.7, and M is Mn, Co, Ni, or a combination thereof.

    ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY INCLUDING SAME
    3.
    发明申请
    ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY INCLUDING SAME 有权

    公开(公告)号：US20210057702A1

    公开(公告)日：2021-02-25

    申请号：US16981261

    申请日：2019-03-05

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Hoon SEOK ,  Junghyun NAM ,  Heeeun YOO ,  Yeonhee YOON ,  Kyuseo LEE ,  Bokkyu JEON ,  Jaehwan HA

    IPC: H01M2/16 ,  H01M10/0525

    Abstract: The present invention relates to an electrode assembly and a rechargeable battery including same. The electrode assembly may comprise: a negative electrode, a positive electrode, and a separator interposed between the negative electrode and the positive electrode and including a first surface facing the negative electrode and a second surface facing the positive electrode, a first functional layer positioned on the first surface and including a fibrous polymer and a heat resistant polymer, and a second functional layer positioned on the second surface and including an inorganic particle and an organic particle.

    RECHARGEABLE LITHIUM BATTERY
    8.
    发明申请
    RECHARGEABLE LITHIUM BATTERY 审中-公开

    公开(公告)号：US20200350580A1

    公开(公告)日：2020-11-05

    申请号：US16862638

    申请日：2020-04-30

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Jaehwan HA ,  Kijun KIM ,  Heeeun YOO ,  Yeonhee YOON ,  Kyuseo LEE ,  Dongmyung LEE

    IPC: H01M4/525 ,  H01M4/60 ,  H01M4/62 ,  H01M4/505

    Abstract: A rechargeable lithium battery includes a positive electrode including a positive current collector and a positive active material layer disposed on the positive current collector; and a negative electrode including a negative current collector, a negative active material layer disposed on the negative current collector, and a negative electrode functional layer disposed on the negative active material layer, wherein the positive active material layer includes a first positive active material including at least one of a composite oxide of metal selected from cobalt, manganese, nickel, and a combination thereof and lithium and a second positive active material including at least one of compounds represented by Chemical Formula 1 to Chemical Formula 4, and the negative electrode functional layer includes flake-shaped polyethylene particles and Lix2Mn1-y2M′y2A2  [Chemical Formula 1] Lix2Mn1-y2M′yO2-z2Xz2  [Chemical Formula 2] Lix2Mn2O4-z2Xz2  [Chemical Formula 3] Lix2Mn2-y2M′y2M″z2A4  [Chemical Formula 4] wherein, 0.9≤x2≤1.1, 0≤y2≤0.5, 0≤z2≤0.5, M′ and M″ are the same or different and are selected from Mg, Al, Co, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn, Cr, Fe, Sr, V, and a rare earth element, andwherein A is selected from O, F, S, and P and X is selected from F, S, and P.

    RECHARGEABLE LITHIUM BATTERY
    10.
    发明申请
    RECHARGEABLE LITHIUM BATTERY 审中-公开

    公开(公告)号：US20200014027A1

    公开(公告)日：2020-01-09

    申请号：US16460779

    申请日：2019-07-02

    Applicant: SAMSUNG SDI CO., LTD.

    Inventor： Jaehwan HA ,  Kijun KIM ,  Heeeun YOO ,  Yeonhee YOON ,  Kyuseo LEE

    IPC: H01M4/525 ,  H01M10/052 ,  H01M10/0569

    Abstract: Disclosed is a rechargeable lithium battery including a positive electrode including a positive active material layer; and a negative electrode including a negative active material layer and a negative functional layer on the negative active material layer, wherein the functional layer includes flake-shaped polyethylene particles, and the positive active material layer includes a first positive active material including one or more composite oxides of lithium and a metal selected from cobalt, manganese, nickel, and a combination thereof, and a second positive active material including a compound represented by Chemical Formula 1 and. In Chemical Formula 1, 0.90≤a ≤1.8, 0≤x≤0.7, and M is Mg, Co, Ni, or a combination thereof. LiaFe1−xMxPO4   [Chemical Formula 1]

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